Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > Experiments & Modifications



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 06-04-2017, 12:07 PM #1
Class 2 Laser
 
Join Date: Feb 2016
Location: Spain
Posts: 265
Rep Power: 7015
Light superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond repute
Light superglue Light superglue is offline
Class 2 Laser
 
Join Date: Feb 2016
Location: Spain
Posts: 265
Rep Power: 7015
Light superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond repute
Default Knife-edging four NUBM44 in Lasertack micro module

This project was inspired by former avatar of Alaskan.

This is my first experience in knife edging of multimode LDs, so I tried to prepare well - last year I asked CDBEAM to make me a Quad Heatsink-Holder for four 12mm DTR modules from a solid block of copper. It should replace the small Al LDs holder in the original Lasertack set because this one for sure would not be good to absorb and evacuate heat produced by four working 6W lasers.

CDBEAM also provided fixing screws for all modules and made additional hole in the micro baseplate to fix this heavy Cu chunk well.

After that I did some add-ons to the set up: made side and bottom holes for set screws to fix the back parts of the DTR modules what allowed me to take advantage of the CDBEAM’s set screws to fix focusing rings. I did this because I did not want to use teflon tape for fixing G-2 barrels in focus to infinity positions. Maybe wrong but we will see…

Finally, I glued the prism mirrors, assembled the device and adjusted the beams with all LDs connected in series at 450mA current. From the 3rd and 4th pictures I suppose that I have knife edged LD1 &2 pretty well (no gap visible), but between LD2, LD3 and LD4 spots there are gaps of ~1mm what I think is due to mount positions (once prism mirrors are glued you cannot move the mounts left-right).
Did I do it right of do I need to try adjusting all four spots so that there would be no gaps between spots at all?

Anyway once adjusted - the spot on the wall at 5m is the line ~6-7cm long. So it does look OK, does not it?
Attached Thumbnails
Knife-edging four NUBM44 in Lasertack micro module-.jpg   Knife-edging four NUBM44 in Lasertack micro module-b.jpg   Knife-edging four NUBM44 in Lasertack micro module-c.jpg   Knife-edging four NUBM44 in Lasertack micro module-d.jpg   Knife-edging four NUBM44 in Lasertack micro module-e-v.jpg  




Last edited by Light superglue; 06-05-2017 at 10:27 AM.
Light superglue is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 06-04-2017, 12:31 PM #2
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,801
Rep Power: 37511
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,801
Rep Power: 37511
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: Knife-edging four NUBM44 in Lasertack micro module

Good work, the only thing I find troublesome with 44/47 diodes is that rapid divergence, I had thought to correct each beam before the KE, is it possible to correct all 4 llll now that they are side by side? As they sit won't they diverge into each other? That is the narrow portion of each line will widen rapidly and they will all overlap.
You may be able to use cylindrical beam correction on all 4 at once.
__________________
You can not put freedom in a bag.
It is in fact an abstract concept.
Yet it is the single most valuable thing anyone has ever had.

Last edited by RedCowboy; 06-04-2017 at 05:44 PM.
RedCowboy is online now   Reply With Quote
Old 06-04-2017, 03:07 PM #3
BobMc's Avatar
Class 3R Laser
 
Join Date: Apr 2016
Location: Lancaster ca
Posts: 2,336
Rep Power: 37877
BobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond repute
BobMc BobMc is online now
Class 3R Laser
BobMc's Avatar
 
Join Date: Apr 2016
Location: Lancaster ca
Posts: 2,336
Rep Power: 37877
BobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond reputeBobMc has a reputation beyond repute
Default Re: Knife-edging four NUBM44 in Lasertack micro module

That is awesome-ness, 4 44's together. Best wishes with your build, if you can, love to see some beamshots from this puppie.
__________________
BobMc's Laser Museum;
http://laserpointerforums.com/f76/bo...l?nojs=1#links


~ Till righteousness is sought after for it's own sake, mankind will not know what makes for peace. ~

Last edited by BobMc; 06-04-2017 at 03:08 PM.
BobMc is online now   Reply With Quote
Old 06-04-2017, 06:29 PM #4
Class 2 Laser
 
Join Date: Feb 2016
Location: Spain
Posts: 265
Rep Power: 7015
Light superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond repute
Light superglue Light superglue is offline
Class 2 Laser
 
Join Date: Feb 2016
Location: Spain
Posts: 265
Rep Power: 7015
Light superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond repute
Default Re: Knife-edging four NUBM44 in Lasertack micro module

Me too think that |||| will overlap rapidly, dimentions of Lasertack micro baseplate do not allow correction before KE, if you would try doing this you have to produce a custom baseplate...

Indeed the gap between lines may not be an issue because the idea of this experiment is to make a "focusing expander" which would allow to focus all the beams in one small area at said distance by slightly changing distance between cylindrical lenses (and beams expansion before focusing would allow to focus them better at Rayleigh distance if I am correct). Here I tried to do a sketch in Paint.

Unfortunately now I can only use 3x cylindricals because the width of my |||| group entering PCV lens is ~4mm, so for 6x expansion I would need a PCC >24mm wide!

Edit: Sorry, I meant PCV >24mm wide!
Attached Thumbnails
Knife-edging four NUBM44 in Lasertack micro module-focusing-expander.jpg  

Last edited by Light superglue; 06-05-2017 at 10:22 AM. Reason: Error
Light superglue is offline   Reply With Quote
Old 06-04-2017, 06:33 PM #5
paul1598419's Avatar
Class 4 Laser
 
Join Date: Sep 2013
Location: Washington State
Posts: 5,321
Rep Power: 47196
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
paul1598419 paul1598419 is online now
Class 4 Laser
paul1598419's Avatar
 
Join Date: Sep 2013
Location: Washington State
Posts: 5,321
Rep Power: 47196
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
Default Re: Knife-edging four NUBM44 in Lasertack micro module

From what I can see in your third and forth photos, you still need to adjust knife edging to bring each beam over the others. They all seem to be more separated than necessary. You should be able to deal with the divergence after this, if you are so inclined.
__________________
405nm Laser Pointer 45mW
405nm C11 700mW
405nm Laser Shack Pointer 80mW
Thor H Dual Power 445nm, 438 mW & 1648 mW
445nm 1.75 watts SkyRay Gifted
445nm 3 watts MS-SSW-II
445nm 2.2 watts Nichia MS Envy

445nm 2 watt SMP Copper Host
477nm 127 mW 501B
488nm Uniphase #2201-20SLAT argon laser head and power supply >40mW
520nm LaserLands pointer Measures 510nm
532nm LSR532H-1W Laser, LSR-PS-N1 Driver, RS-75-5 P.S. 1300 mW
532nm 200mW Thermostatically Controlled Fan Cooled (Besram) >230mW
532nm 189mW pocket lab laser
532nm lasers X6 100mW-200mW
532nm lasers X4 75mW- 140mW
632.8nm P210 New Laser Tube 0.57mW Melles Griot 05-LMP-827-037 PS
632.8nm Spectra- Physics He- Ne #102-2 4mW heads X2 and #236 power supply
632.8nm PMS He-Ne # 201P/ LPS-115 2mW
632.8nm Siemens HeNe LGK7630S 7.6mW
635nm 1 watt Cyprus II
635nm 1 watt SMP Copper host
635nm 5mW pointer
635nm 100mW pointer
635nm Lifetime17 Mini-camo build 687mW
650nm 65mW pointer
650nm 380mW 501B
808nm 1+W infrared laser
infrared video camera for collimating IR lasers
Ocean Optics USB2000 Spectrometer
Scientech Vector S310 with AC2500 10 Watt LPM
LaserBee II 3.2 Watt LPM
Radiant X4 3.7 Watt LPM

Last edited by paul1598419; 06-04-2017 at 07:20 PM.
paul1598419 is online now   Reply With Quote
Old 06-04-2017, 08:23 PM #6
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,801
Rep Power: 37511
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,801
Rep Power: 37511
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: Knife-edging four NUBM44 in Lasertack micro module

Paul those gaps don't matter at all, they will be expanding over those gaps in just a few feet, what looks like l will become =====

The lines that look tall will diverge quickly to be a little taller but a lot wider, it's the horizontal divergence that will be very aggressive.

Attached Thumbnails
Knife-edging four NUBM44 in Lasertack micro module-horzesp.jpg  
__________________
You can not put freedom in a bag.
It is in fact an abstract concept.
Yet it is the single most valuable thing anyone has ever had.

Last edited by RedCowboy; 06-04-2017 at 08:36 PM.
RedCowboy is online now   Reply With Quote
Old 06-06-2017, 01:03 PM #7
CDBEAM777's Avatar
Class 2M Laser
 
Join Date: Feb 2010
Posts: 879
Rep Power: 11937
CDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond repute
CDBEAM777 CDBEAM777 is online now
Class 2M Laser
CDBEAM777's Avatar
 
Join Date: Feb 2010
Posts: 879
Rep Power: 11937
CDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond repute
Default Re: Knife-edging four NUBM44 in Lasertack micro module

MMMMm....the problem is that the slow axis....MUST enter directly into the centre of the Cylindrical optics... So...

When you knife edge....you end up with a geometry of llll

Now....when you have one LD ...... you have a geometry of l

which can be aligned on the center of the first Cylindrical lens...the Plano

concave........But....when you have four (4) beams....like this llll

you CANNOT center.....SO....

One must Cylindrical correct each beam....THEN .... knife edge combine the

beams...AFTER they are corrected.

Now....I have NOT done this...but see NO reason the optical path could not be

arranged. Sorry Vlad...I see no other way.....and...until I CAD it out....I am

NOT positive this can be done. The 044 is just an unruly Bastard.

Beam out
__________________
Lite'em Up CDBEAM=======>...and....
"Robby...Where have you been? I've beamed and beamed "

Solar Prominence-Laser Lumia combined with audio http://laserpointerforums.com/f47/laser-lumia-terrawatt-labs-97261.html
CYAN CANNON V BUILD-Green + Blue = Photon Cannon - Build resumed http://laserpointerforums.com/f49/cy...ild-94999.html
Titanium Cyprus TRI EDC with 520 nm and GITD Europium barrel rings-Completed http://laserpointerforums.com/f45/my...t-94978-2.html
TRIDENTIS BUILD-Three (3) 445 Combiner-Knife edge-Completed http://laserpointerforums.com/f65/tr...uty-83781.html
DRAGON'S HEAD BUILD-Optically corrected P73-Completed http://laserpointerforums.com/f50/no...ign-87235.html
Purple pHAZE Combiner - Red + Blue = Purple-Completed http://laserpointerforums.com/f42/pu...ple-93717.html
Sky Blue Ramjet-Corrected NUBMO7E- Completed http://laserpointerforums.com/f42/sk...ild-94646.html
Check out http://www.hobbylasers.com/
CDBEAM777 is online now   Reply With Quote
Old 06-06-2017, 02:35 PM #8
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,998
Rep Power: 36221
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
diachi diachi is online now
Class 4 Laser
diachi's Avatar
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,998
Rep Power: 36221
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
Default Re: Knife-edging four NUBM44 in Lasertack micro module

There is another way, anamorphic prisms. I'm trying to remember if there's a way to do it with the cylinder pair too...
__________________


405nm | Banggood LT-850 | "5mW" | Review Unit | Review WIP
445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
450nm | LaserPointerStore - Thor H2 | 1W(?) | Review Unit | >>Review<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | Review Unit | 3mW metered | >>Review<<
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD-850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



Check out my Reddit Subreddit! >>/r/laserpointers<<

diachi is online now   Reply With Quote
Old 06-06-2017, 06:49 PM #9
Class 2 Laser
 
Join Date: Feb 2016
Location: Spain
Posts: 265
Rep Power: 7015
Light superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond repute
Light superglue Light superglue is offline
Class 2 Laser
 
Join Date: Feb 2016
Location: Spain
Posts: 265
Rep Power: 7015
Light superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond repute
Default Re: Knife-edging four NUBM44 in Lasertack micro module

What I want to do here with moving C-lenses is not only expand each of stacked beams but to focus all of them in the same small area.

Let me better explain the idea of this experiment (and correct me if I am wrong!):

Let’s consider that we do not have 4 blue stacked beams IIII but one wide beam around painted in red. Let me suggest that each photon the blue beams consist of would correspond to a photon in the imaginary red beam and propagate through C-lenses in the same way. The red beam also includes the gaps between blue beams which “propagate” exactly as beams do – expand at beam expansion and tighten at focusing…

Red beam here is perfectly centered. So will the IIII group be (let’s regard it as a group).

By slightly changing lens separation from the perfect one where focal points coinside (as in beam expander) we can get either diverging or converging red beam as a result. What means that all 4 blue beams “caught” inside of the red imaginary one would not only be focused at the same distance but also pass through the same focus point on the optical axis drawn through the center of IIII group and lenses centers.
For sure it will not be a tiny focus point but the area which would correspond to the “beam waist” of the red beam because we have to take divergence after C-lenses into account. And from what we know about light propagation – expansion of the red beam before focusing will help to reduce its divergence and allow to concentrate it on the smaller beam waist area at distance.
So should be the case with the blue IIII group as well.
Attached Thumbnails
Knife-edging four NUBM44 in Lasertack micro module-focusing-expander-beam-waist-range.jpg  

Last edited by Light superglue; 06-06-2017 at 06:50 PM.
Light superglue is offline   Reply With Quote
Old 06-06-2017, 08:59 PM #10
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,801
Rep Power: 37511
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,801
Rep Power: 37511
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: Knife-edging four NUBM44 in Lasertack micro module

It's possible Yes, at least I think so, but because the 44 has that very aggressive axis your lenses will need to be within a margin and just how far you can converge the beams before they diverge is the question.

Your convex will likely need to be bigger than your concave and how far apart they will need to be working is in the math, but if you could obtain a reasonably tight spot at 5 to 20 feet that would certainly be fun, but I doubt you can get any real distance because of that one very aggressive axis.

I would enjoy 4 x 44's all packed into a burning spot at 5 to 20 feet, that would be fun, it's just a tough diode to work with, if you were using half watt 405nm diodes or quarter watt 660nm diodes it would likely work very well into the far field.
__________________
You can not put freedom in a bag.
It is in fact an abstract concept.
Yet it is the single most valuable thing anyone has ever had.

Last edited by RedCowboy; 06-06-2017 at 09:08 PM.
RedCowboy is online now   Reply With Quote
Old 06-07-2017, 01:23 AM #11
Alaskan's Avatar
Class 4 Laser
 
Join Date: Jan 2014
Location: Currently in Iraq.
Posts: 7,075
Rep Power: 48065
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Alaskan Alaskan is offline
Class 4 Laser
Alaskan's Avatar
 
Join Date: Jan 2014
Location: Currently in Iraq.
Posts: 7,075
Rep Power: 48065
Alaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond reputeAlaskan has a reputation beyond repute
Default Re: Knife-edging four NUBM44 in Lasertack micro module

Thank you for sharing your project with us, looking forward to seeing how the issues are worked out. Regardless of the unruly behaviour of that diode for expanding them together, they can make a hell of a lot of power for burning things close up when stacked like that. Even if you don't expand the beams or correct them, I would be particularly interested in seeing a beam shot in a darkened room.
__________________

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

Laser Safety: http://www.laserpointersafety.com/index.html

Sam's Laser FAQ: Sam's Laser FAQ: Welcome Page

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

To shorten my signature I have moved most of my laser related web links to this forum page, the second post in that thread shows most of my builds... Alaskan's Laser Links: http://laserpointerforums.com/f44/al...ml#post1449395


Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

Each of these three rabbit holes go deep, ending up in the same place.

Useless troll fighting.
.........................
PhotoB****t high jacking you too? Use this link instead:
http://imgbb.com

High resolution of my avatar: https://ibb.co/fWOhXF

Last edited by Alaskan; 06-07-2017 at 01:26 AM.
Alaskan is offline   Reply With Quote
Old 06-07-2017, 01:37 AM #12
CDBEAM777's Avatar
Class 2M Laser
 
Join Date: Feb 2010
Posts: 879
Rep Power: 11937
CDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond repute
CDBEAM777 CDBEAM777 is online now
Class 2M Laser
CDBEAM777's Avatar
 
Join Date: Feb 2010
Posts: 879
Rep Power: 11937
CDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond repute
Default Re: Knife-edging four NUBM44 in Lasertack micro module

Quote:
Originally Posted by Light superglue View Post
What I want to do here with moving C-lenses is not only expand each of stacked beams but to focus all of them in the same small area.

Let me better explain the idea of this experiment (and correct me if I am wrong!):

Let’s consider that we do not have 4 blue stacked beams IIII but one wide beam around painted in red. Let me suggest that each photon the blue beams consist of would correspond to a photon in the imaginary red beam and propagate through C-lenses in the same way. The red beam also includes the gaps between blue beams which “propagate” exactly as beams do – expand at beam expansion and tighten at focusing…

Red beam here is perfectly centered. So will the IIII group be (let’s regard it as a group).

By slightly changing lens separation from the perfect one where focal points coinside (as in beam expander) we can get either diverging or converging red beam as a result. What means that all 4 blue beams “caught” inside of the red imaginary one would not only be focused at the same distance but also pass through the same focus point on the optical axis drawn through the center of IIII group and lenses centers.
For sure it will not be a tiny focus point but the area which would correspond to the “beam waist” of the red beam because we have to take divergence after C-lenses into account. And from what we know about light propagation – expansion of the red beam before focusing will help to reduce its divergence and allow to concentrate it on the smaller beam waist area at distance.
So should be the case with the blue IIII group as well.
Hmmm ????? Your Ray path drawing may work....It will deliver a convergence point....not an infinity focus....but....it is a convergence point that you want !!!

EXPERIMENT....and provide us pics....so that we may learn !!! PLEASE !!!!!
...... Thanx...

CDBEAM

Added Blah.Blah.....I still say....that it is possible to have an IR range finder.....constantly measuring the distance from the LD source....to the " target "....down range in the Far Field....and have that data stream....control a micro translation table. This table would move back/forth as a function of the Range Finder telemetry. The Plano Convex lens would ride on this table.

SO.....the Convergence point would terminate at the target location. AUTOMATICALY !!! Of course.....the convergence point range must be within the limits of the optics....and such a setup ....mmmmm....may not be possible on a Hand Held unit.....mmmmm...unless one hacks the auto focus unit from a cheap digital camera ??
MMmmmmm ???
Attached Thumbnails
Knife-edging four NUBM44 in Lasertack micro module-docbrown-could-work-2.jpg  
__________________
Lite'em Up CDBEAM=======>...and....
"Robby...Where have you been? I've beamed and beamed "

Solar Prominence-Laser Lumia combined with audio http://laserpointerforums.com/f47/laser-lumia-terrawatt-labs-97261.html
CYAN CANNON V BUILD-Green + Blue = Photon Cannon - Build resumed http://laserpointerforums.com/f49/cy...ild-94999.html
Titanium Cyprus TRI EDC with 520 nm and GITD Europium barrel rings-Completed http://laserpointerforums.com/f45/my...t-94978-2.html
TRIDENTIS BUILD-Three (3) 445 Combiner-Knife edge-Completed http://laserpointerforums.com/f65/tr...uty-83781.html
DRAGON'S HEAD BUILD-Optically corrected P73-Completed http://laserpointerforums.com/f50/no...ign-87235.html
Purple pHAZE Combiner - Red + Blue = Purple-Completed http://laserpointerforums.com/f42/pu...ple-93717.html
Sky Blue Ramjet-Corrected NUBMO7E- Completed http://laserpointerforums.com/f42/sk...ild-94646.html
Check out http://www.hobbylasers.com/

Last edited by CDBEAM777; 06-07-2017 at 03:30 AM. Reason: Added Blah, Blah
CDBEAM777 is online now   Reply With Quote
Old 06-07-2017, 01:09 PM #13
Class 1 Laser
 
Join Date: Dec 2011
Posts: 82
Rep Power: 760
logsquared has a reputation beyond reputelogsquared has a reputation beyond reputelogsquared has a reputation beyond reputelogsquared has a reputation beyond reputelogsquared has a reputation beyond reputelogsquared has a reputation beyond reputelogsquared has a reputation beyond reputelogsquared has a reputation beyond reputelogsquared has a reputation beyond reputelogsquared has a reputation beyond reputelogsquared has a reputation beyond repute
logsquared logsquared is offline
Class 1 Laser
 
Join Date: Dec 2011
Posts: 82
Rep Power: 760
logsquared has a reputation beyond reputelogsquared has a reputation beyond reputelogsquared has a reputation beyond reputelogsquared has a reputation beyond reputelogsquared has a reputation beyond reputelogsquared has a reputation beyond reputelogsquared has a reputation beyond reputelogsquared has a reputation beyond reputelogsquared has a reputation beyond reputelogsquared has a reputation beyond reputelogsquared has a reputation beyond repute
Default Re: Knife-edging four NUBM44 in Lasertack micro module

Quote:
Originally Posted by Light superglue View Post
What I want to do here with moving C-lenses is not only expand each of stacked beams but to focus all of them in the same small area.

Let me better explain the idea of this experiment (and correct me if I am wrong!):

Let’s consider that we do not have 4 blue stacked beams IIII but one wide beam around painted in red. Let me suggest that each photon the blue beams consist of would correspond to a photon in the imaginary red beam and propagate through C-lenses in the same way. The red beam also includes the gaps between blue beams which “propagate” exactly as beams do – expand at beam expansion and tighten at focusing…

Red beam here is perfectly centered. So will the IIII group be (let’s regard it as a group).

By slightly changing lens separation from the perfect one where focal points coinside (as in beam expander) we can get either diverging or converging red beam as a result. What means that all 4 blue beams “caught” inside of the red imaginary one would not only be focused at the same distance but also pass through the same focus point on the optical axis drawn through the center of IIII group and lenses centers.
For sure it will not be a tiny focus point but the area which would correspond to the “beam waist” of the red beam because we have to take divergence after C-lenses into account. And from what we know about light propagation – expansion of the red beam before focusing will help to reduce its divergence and allow to concentrate it on the smaller beam waist area at distance.
So should be the case with the blue IIII group as well.
The far-field spots can be made to overlap as shown. The more the beam is expanded the larger the "gaps" on the output lens of the expander will get.

You will need to make a modification to your knife edge set-up. The distance from each diode to the input of the BE has to be equal. Otherwise the BE can't focus the individual beams together. You will have to "step" the modules back in the copper base. Looks like you have the room, just need to re- drill/tap the holding screws.
logsquared is offline   Reply With Quote
Old 06-08-2017, 01:53 AM #14
CDBEAM777's Avatar
Class 2M Laser
 
Join Date: Feb 2010
Posts: 879
Rep Power: 11937
CDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond repute
CDBEAM777 CDBEAM777 is online now
Class 2M Laser
CDBEAM777's Avatar
 
Join Date: Feb 2010
Posts: 879
Rep Power: 11937
CDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond repute
Default Re: Knife-edging four NUBM44 in Lasertack micro module

LS....VERY good to see you here !!! Glad you agree that this arrangement is feasible !

I have never tried to run a Quad group thru a set of cylindrical's !! Should be interesting !!

Later,
Beam Out
__________________
Lite'em Up CDBEAM=======>...and....
"Robby...Where have you been? I've beamed and beamed "

Solar Prominence-Laser Lumia combined with audio http://laserpointerforums.com/f47/laser-lumia-terrawatt-labs-97261.html
CYAN CANNON V BUILD-Green + Blue = Photon Cannon - Build resumed http://laserpointerforums.com/f49/cy...ild-94999.html
Titanium Cyprus TRI EDC with 520 nm and GITD Europium barrel rings-Completed http://laserpointerforums.com/f45/my...t-94978-2.html
TRIDENTIS BUILD-Three (3) 445 Combiner-Knife edge-Completed http://laserpointerforums.com/f65/tr...uty-83781.html
DRAGON'S HEAD BUILD-Optically corrected P73-Completed http://laserpointerforums.com/f50/no...ign-87235.html
Purple pHAZE Combiner - Red + Blue = Purple-Completed http://laserpointerforums.com/f42/pu...ple-93717.html
Sky Blue Ramjet-Corrected NUBMO7E- Completed http://laserpointerforums.com/f42/sk...ild-94646.html
Check out http://www.hobbylasers.com/
CDBEAM777 is online now   Reply With Quote
Old 06-08-2017, 04:31 AM #15
paul1598419's Avatar
Class 4 Laser
 
Join Date: Sep 2013
Location: Washington State
Posts: 5,321
Rep Power: 47196
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
paul1598419 paul1598419 is online now
Class 4 Laser
paul1598419's Avatar
 
Join Date: Sep 2013
Location: Washington State
Posts: 5,321
Rep Power: 47196
paul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond reputepaul1598419 has a reputation beyond repute
Default Re: Knife-edging four NUBM44 in Lasertack micro module

I always liked Christopher Lloyd. Saw him in Taxi first as the stoner hippie that was sooo spaced out.
__________________
405nm Laser Pointer 45mW
405nm C11 700mW
405nm Laser Shack Pointer 80mW
Thor H Dual Power 445nm, 438 mW & 1648 mW
445nm 1.75 watts SkyRay Gifted
445nm 3 watts MS-SSW-II
445nm 2.2 watts Nichia MS Envy

445nm 2 watt SMP Copper Host
477nm 127 mW 501B
488nm Uniphase #2201-20SLAT argon laser head and power supply >40mW
520nm LaserLands pointer Measures 510nm
532nm LSR532H-1W Laser, LSR-PS-N1 Driver, RS-75-5 P.S. 1300 mW
532nm 200mW Thermostatically Controlled Fan Cooled (Besram) >230mW
532nm 189mW pocket lab laser
532nm lasers X6 100mW-200mW
532nm lasers X4 75mW- 140mW
632.8nm P210 New Laser Tube 0.57mW Melles Griot 05-LMP-827-037 PS
632.8nm Spectra- Physics He- Ne #102-2 4mW heads X2 and #236 power supply
632.8nm PMS He-Ne # 201P/ LPS-115 2mW
632.8nm Siemens HeNe LGK7630S 7.6mW
635nm 1 watt Cyprus II
635nm 1 watt SMP Copper host
635nm 5mW pointer
635nm 100mW pointer
635nm Lifetime17 Mini-camo build 687mW
650nm 65mW pointer
650nm 380mW 501B
808nm 1+W infrared laser
infrared video camera for collimating IR lasers
Ocean Optics USB2000 Spectrometer
Scientech Vector S310 with AC2500 10 Watt LPM
LaserBee II 3.2 Watt LPM
Radiant X4 3.7 Watt LPM
paul1598419 is online now   Reply With Quote
Old 06-10-2017, 10:49 AM #16
Class 2 Laser
 
Join Date: Feb 2016
Location: Spain
Posts: 265
Rep Power: 7015
Light superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond repute
Light superglue Light superglue is offline
Class 2 Laser
 
Join Date: Feb 2016
Location: Spain
Posts: 265
Rep Power: 7015
Light superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond reputeLight superglue has a reputation beyond repute
Default Re: Knife-edging four NUBM44 in Lasertack micro module

Hi logsquared,

Yes, I agree that for perfect spot it would be better that all beams have same path distance before BE but this would make the set up more complicated. In this set I am trying to make use of as little pieces as possible and that these pieces could mostly be taken off shelf.
And the difference in path of 1st and 4th beam is only 4cm – so I think that the distortion caused by this would not be as much as e.g. a non proper circular adjustment of C-lenses could cause… Anyway it is just experiment – not a product for a customer (however, if anyone is ready to sponsor this research…?).


Hi CDBEAM,

The autofocus thing was indeed one of my intentions. We also talked with RC about it once last year. But engineering the idea into hardware is not clear to me. Up to now for this project I have bought these 3 things:
- smallest linear rail guide found on Ali (5mm rail and 12mm guide width). Optlasers C-lenses perfectly pass here and can slide manually but do not hold position well. And today I do not see these rails on Ali any more, the smallest are 7mm wide now.
- Newport MS-200M-X from ebay – it holds position but how to motorise the knob?
- The smallest linear actuator from Ali – not checked how to drive it and apply it in the set.

Then your Big cylindricals would move on the rail and that’s it.
Attached Thumbnails
Knife-edging four NUBM44 in Lasertack micro module-z.jpg  
Light superglue is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 07:34 AM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC