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 > 445nm Lasers



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



Reply
 
LinkBack Thread Tools Display Modes
Old 08-05-2010, 06:27 PM #1
IgorT's Avatar
Class 3B Laser
 
Join Date: Oct 2007
Location: Slovenia, EU
Posts: 4,177
Rep Power: 55
IgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond repute
Send a message via Skype™ to IgorT
IgorT IgorT is offline
Class 3B Laser
IgorT's Avatar
 
Join Date: Oct 2007
Location: Slovenia, EU
Posts: 4,177
Rep Power: 55
IgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond repute
Send a message via Skype™ to IgorT
Default 3x 445nm LD PIV Plot

I heard there was a lack of PIV plots for these new diodes...
As it happens, i just made a triple plot yesterday.

EDIT: The diodes came from an A130 projector, if it makes any difference at all....


This was actually the first time i had to switch my faithfull OmniDrive Diode Analyzer (TM) into the high current range (2A as opposed to 700mA in the low range)
A pic of the Diode Analyzer is in the third attachment for those who haven't seen it yet (heard there's a lot of new members)...


I set the Imax to 1.2A and plotted in 100mA resolution. It's actually a higher resolution than 40mA for an 8x or a 12x diode, relativelly speaking.
It would still show if there were any kinks and a higher resolution was required...
The reason i decided to limit the max current to 1.2A is that the Nichia datasheet that is suspected to belong to this diode model only in a different can, mentions 1.2A as the absolute maximum current, and i didn't want to cause any damage to them (prematurelly).


Here's what the diodes look like when plotted using a 405-G-1 broadband lens:




Two diodes (#01 & #03 had almost identical slope efficiency as you can see from the overlapping curves..

I only used one Vf curve so as not to make the graph confusing - it's about at the average Vf i found....


One thing that became immediatelly apparent was that they don't form straight lines like 405nm diodes do. The slope starts slower, then it "speeds up" somewhat, until at a certain point the efficiency starts dropping off, probably from the diode's sensitivity to heat (similar effect as with reds, only less pronounced)...


Except for the slight curvature changes in the plots there were no kinks anywhere and the diodes took the testing quite nicelly.


It is probably safe to say that the majority of these 445nm diodes will fall into approximately the same range displayed here, unless you stumble on a freak or a weakling, so this triple plot should give you an approximate idea of what power to expect at different currents....




I also wanted to take this opportunity to show off my first 445nm laser.




It's in this wicked little stainless steel AA host wearing a 405-G-1 broadband coated lens...

I know most are being made in 18650 hosts but the build here is no crueler (to the battery) than making a keychain 8x laser (which a couple of members did)... Heat is apparently not a problem for it but i'll try in an aluminum host of the same model to see if there is any difference in power stability...

The beast delivers 1190 mW from 1A of current when cold!
And it's awesome, as those of you who already have a 445nm laser know...



P.S. Many thanks to Jayrob, who keeps making prototype heatsinks for me, regardless of how badly i annoy him with the details...
Attached Thumbnails
3x 445nm LD PIV Plot-445nm-3x-piv-plot.png   3x 445nm LD PIV Plot-aa-445nm-laser.png   3x 445nm LD PIV Plot-omnidrive-diode-analyzer-finished.jpg  


__________________
Signature temporarily out of order...

Last edited by IgorT; 08-06-2010 at 08:10 PM.
IgorT is offline   Reply With Quote







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







Old 08-05-2010, 07:07 PM #2
genius5th
Guest
 
Posts: n/a
genius5th
Guest
 
Posts: n/a
Default Re: 3x 445nm LD PIV Plot

sweet laser, thanks for the charts
  Reply With Quote
Old 08-05-2010, 07:09 PM #3
Asherz's Avatar
Class 3R Laser
 
Join Date: Jan 2009
Location: United Kingdom
Posts: 1,627
Rep Power: 64
Asherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond repute
Asherz Asherz is offline
Class 3R Laser
Asherz's Avatar
 
Join Date: Jan 2009
Location: United Kingdom
Posts: 1,627
Rep Power: 64
Asherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond reputeAsherz has a reputation beyond repute
Default Re: 3x 445nm LD PIV Plot

Nice write up, lots of useful info.

That laser has one nice host, looks great veery nice build!
__________________
- 150mW Ehgemus Mini-RPL Review -

Collection of the Best Free games

445nm Custom build@1A - Old style Dorcy Jr. + purple anodized heatsink
Dino Direct 50mW Flashlight unit
DX True green 100mW
O-like module @ 171mW in Mini-RPL host
Single-line Argon @ 52mW 488nm Peak
PHR-803T @ 110mA in Jayrob MXDL host
DX Red 660nm 200mW
Dragon lasers 190nm-548nm Safety Goggles
Asherz is offline   Reply With Quote
Old 08-05-2010, 07:13 PM #4
Meatball's Avatar
Class 3B Laser
 
Join Date: Feb 2008
Location: Lincoln, NE
Posts: 2,989
Rep Power: 242
Meatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond repute
Meatball Meatball is offline
Class 3B Laser
Meatball's Avatar
 
Join Date: Feb 2008
Location: Lincoln, NE
Posts: 2,989
Rep Power: 242
Meatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond repute
Default Re: 3x 445nm LD PIV Plot

Igor! You're the man! Thanks for sharing your plots with us! Now I'll bet I can get 2W from my knife edge kit after corrective optics.
__________________
FIAT LUX

(\__/)
(='.'=)
(")_(")
Meatball is offline   Reply With Quote
Old 08-05-2010, 07:14 PM #5
Gryphon's Avatar
Class 3R Laser
 
Join Date: May 2009
Location: Panama City, Florida
Posts: 1,838
Rep Power: 182
Gryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond repute
Gryphon Gryphon is offline
Class 3R Laser
Gryphon's Avatar
 
Join Date: May 2009
Location: Panama City, Florida
Posts: 1,838
Rep Power: 182
Gryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond reputeGryphon has a reputation beyond repute
Default Re: 3x 445nm LD PIV Plot

Awesome graph! Are you going to be testing any of these diodes all the way till they fail?
__________________
I see................wait, what now?

(3x) 405nm
(6x) 445nm
(4x) 532nm
(1x) 543nm
(1x) 632.8nm
(1x) 635nm
(3x) 660nm
SSY-1 Laser
Gryphon is offline   Reply With Quote
Old 08-05-2010, 07:16 PM #6
cd520's Avatar
Class 2 Laser
 
Join Date: Aug 2010
Location: West Virginia
Posts: 277
Rep Power: 35
cd520 has a reputation beyond reputecd520 has a reputation beyond reputecd520 has a reputation beyond reputecd520 has a reputation beyond reputecd520 has a reputation beyond reputecd520 has a reputation beyond reputecd520 has a reputation beyond reputecd520 has a reputation beyond reputecd520 has a reputation beyond reputecd520 has a reputation beyond reputecd520 has a reputation beyond repute
cd520 cd520 is offline
Class 2 Laser
cd520's Avatar
 
Join Date: Aug 2010
Location: West Virginia
Posts: 277
Rep Power: 35
cd520 has a reputation beyond reputecd520 has a reputation beyond reputecd520 has a reputation beyond reputecd520 has a reputation beyond reputecd520 has a reputation beyond reputecd520 has a reputation beyond reputecd520 has a reputation beyond reputecd520 has a reputation beyond reputecd520 has a reputation beyond reputecd520 has a reputation beyond reputecd520 has a reputation beyond repute
Default Re: 3x 445nm LD PIV Plot

Nice work with the plot. Are these a130 or a140's?
cd520 is offline   Reply With Quote
Old 08-05-2010, 07:32 PM #7
BShanahan14rulz's Avatar
Class 3B Laser
 
Join Date: Dec 2009
Posts: 3,175
Rep Power: 264
BShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond repute
BShanahan14rulz BShanahan14rulz is offline
Class 3B Laser
BShanahan14rulz's Avatar
 
Join Date: Dec 2009
Posts: 3,175
Rep Power: 264
BShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond repute
Default Re: 3x 445nm LD PIV Plot

Woo thanks Igor~!!! Hope your hand gets better!
BShanahan14rulz is offline   Reply With Quote
Old 08-05-2010, 08:27 PM #8
IgorT's Avatar
Class 3B Laser
 
Join Date: Oct 2007
Location: Slovenia, EU
Posts: 4,177
Rep Power: 55
IgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond repute
Send a message via Skype™ to IgorT
IgorT IgorT is offline
Class 3B Laser
IgorT's Avatar
 
Join Date: Oct 2007
Location: Slovenia, EU
Posts: 4,177
Rep Power: 55
IgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond repute
Send a message via Skype™ to IgorT
Default Re: 3x 445nm LD PIV Plot

Quote:
Originally Posted by Gryphon View Post
Awesome graph! Are you going to be testing any of these diodes all the way till they fail?
Possibly, if time and finances allow... But once i do, i'll have enough data to create a lifetime approximation curve, like i did with the 8x's but was unable to repeat with 12x's as only one played along...


Quote:
Originally Posted by cd520 View Post
Nice work with the plot. Are these a130 or a140's?
Umm to be honest, i had no idea there were two types...
All i know is that they come from a Cassio projector. Does a1x0 refer to the model of the projector?

Is there any indication they are different from one another?
__________________
Signature temporarily out of order...

Last edited by IgorT; 08-06-2010 at 09:01 AM.
IgorT is offline   Reply With Quote
Old 08-05-2010, 08:30 PM #9
RA_pierce's Avatar
Class 3B Laser
 
Join Date: Sep 2007
Location: Southern California
Posts: 3,258
Rep Power: 3873
RA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond repute
RA_pierce RA_pierce is online now
Class 3B Laser
RA_pierce's Avatar
 
Join Date: Sep 2007
Location: Southern California
Posts: 3,258
Rep Power: 3873
RA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond repute
Default Re: 3x 445nm LD PIV Plot

Quote:
Originally Posted by IgorT View Post
Is there any indication they are different from one another?
I think the consensus is, "We don't know (yet)."
Most think that there is no difference and that the A140 projector uses "binned" diodes of higher efficiency for more light output.

Welcome back.

Edit: And that is a sweet build. Nice job.
RA_pierce is online now   Reply With Quote
Old 08-05-2010, 08:32 PM #10
IgorT's Avatar
Class 3B Laser
 
Join Date: Oct 2007
Location: Slovenia, EU
Posts: 4,177
Rep Power: 55
IgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond repute
Send a message via Skype™ to IgorT
IgorT IgorT is offline
Class 3B Laser
IgorT's Avatar
 
Join Date: Oct 2007
Location: Slovenia, EU
Posts: 4,177
Rep Power: 55
IgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond repute
Send a message via Skype™ to IgorT
Default Re: 3x 445nm LD PIV Plot

Quote:
Originally Posted by BShanahan14rulz View Post
Woo thanks Igor~!!! Hope your hand gets better!
My hand's been fine for a long time now, and actually it was just a minor nuisance in comparison to the main reason i was away for so long.

But the gory details are too personal for me to discuss in public, so let's just leave it at that...
__________________
Signature temporarily out of order...

Last edited by IgorT; 08-06-2010 at 06:00 PM.
IgorT is offline   Reply With Quote
Old 08-05-2010, 08:45 PM #11
lasersbee's Avatar
Class 4 Laser
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 15,808
Rep Power: 44039
lasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond repute
lasersbee lasersbee is online now
Class 4 Laser
lasersbee's Avatar
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 15,808
Rep Power: 44039
lasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond repute
Default Re: 3x 445nm LD PIV Plot

Quote:
Originally Posted by IgorT View Post
Does a1x0 refer to the model of the projector?

Is there any indication they are different from one another?
Yes... The XJ-A130 is the Casio 2000 Lumen Projector... where the
XJ-A140 is the Casio 2500 Lumen Projector..

BTW... thanks for the Graph.... I would also like to know which
model of projector that your LDs came from...

I tested one of each and there were differences that I saw..


Jerry
__________________

J.BAUER Electronics Home Page

LaserBee Laser Power Meter Products meet your needs
at affordable Prices:
See them all here on LPF

LaserBee Power Meter products ALWAYS in Stock
and ready to ship

Also available on eBay:Check availability here..

Subsidary: Pharma Electronic Solutions


This banner is available to and can be copied/used FREE by any LaserBee owner

Last edited by lasersbee; 08-05-2010 at 08:56 PM.
lasersbee is online now   Reply With Quote
Old 08-05-2010, 08:56 PM #12
Meatball's Avatar
Class 3B Laser
 
Join Date: Feb 2008
Location: Lincoln, NE
Posts: 2,989
Rep Power: 242
Meatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond repute
Meatball Meatball is offline
Class 3B Laser
Meatball's Avatar
 
Join Date: Feb 2008
Location: Lincoln, NE
Posts: 2,989
Rep Power: 242
Meatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond repute
Default Re: 3x 445nm LD PIV Plot

Quote:
Originally Posted by IgorT View Post
Possibly, if time and finances allow... But once i do, i'll have enough data to create a lifetime approximation curve, like i did with the 8x's but was unable to repeat with 12x's as only one played along...




Umm to be honest, i had no idea there were two types...
All i know is that they come from a Cassio projector. Does a1x0 refer to the model of the projector?

Is there any indication they are different from one another?
Dave sent you those diodes, didn't he? Theres a good chance that those will be the a140s... not that there is a known difference..

The a130 projector was not rated as bright as the a140 projector. So naturally, there was speculation about the diodes used.
__________________
FIAT LUX

(\__/)
(='.'=)
(")_(")
Meatball is offline   Reply With Quote
Old 08-05-2010, 09:00 PM #13
lasersbee's Avatar
Class 4 Laser
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 15,808
Rep Power: 44039
lasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond repute
lasersbee lasersbee is online now
Class 4 Laser
lasersbee's Avatar
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 15,808
Rep Power: 44039
lasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond repute
Default Re: 3x 445nm LD PIV Plot

You can have a look at the 2 different LDs I tested here for
reference if it helps...

Post your mA and mW A130

Post your mA and mW A140



Jerry
__________________

J.BAUER Electronics Home Page

LaserBee Laser Power Meter Products meet your needs
at affordable Prices:
See them all here on LPF

LaserBee Power Meter products ALWAYS in Stock
and ready to ship

Also available on eBay:Check availability here..

Subsidary: Pharma Electronic Solutions


This banner is available to and can be copied/used FREE by any LaserBee owner

Last edited by lasersbee; 08-06-2010 at 06:17 PM. Reason: Link Fix
lasersbee is online now   Reply With Quote
Old 08-05-2010, 09:03 PM #14
IgorT's Avatar
Class 3B Laser
 
Join Date: Oct 2007
Location: Slovenia, EU
Posts: 4,177
Rep Power: 55
IgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond repute
Send a message via Skype™ to IgorT
IgorT IgorT is offline
Class 3B Laser
IgorT's Avatar
 
Join Date: Oct 2007
Location: Slovenia, EU
Posts: 4,177
Rep Power: 55
IgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond reputeIgorT has a reputation beyond repute
Send a message via Skype™ to IgorT
Default Re: 3x 445nm LD PIV Plot

Quote:
Originally Posted by Meatball View Post
Igor! You're the man! Thanks for sharing your plots with us! Now I'll bet I can get 2W from my knife edge kit after corrective optics.
Thanks!

What's a knife edge kit? Something you designed or something available on the forum?


I heard of a kit DrLava had planned, and it mentions TECs.
I do believe these diodes would benefit from a constant temperature setup...
That beginning of a "knee" at higher powers could very well be from the heat, so a constant temperature TEC rig might be able to straighten the line quite a bit = more powah at same current.

405nm diodes are not nearly as sensitive to heat, so there is barelly any difference in the results if you apply such a rig. Red diodes on the other hand would benefit from it the most...
__________________
Signature temporarily out of order...

Last edited by IgorT; 08-06-2010 at 09:00 AM.
IgorT is offline   Reply With Quote
Old 08-05-2010, 09:12 PM #15
Class 4 Laser
 
Join Date: Nov 2008
Posts: 5,728
Rep Power: 547
ElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond repute
ElektroFreak ElektroFreak is offline
Class 4 Laser
 
Join Date: Nov 2008
Posts: 5,728
Rep Power: 547
ElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond reputeElektroFreak has a reputation beyond repute
Default Re: 3x 445nm LD PIV Plot

Quote:
Originally Posted by IgorT View Post
Thanks!

What's a knife edge kit? Something you designed or something available on the forum?

Welcome back Igor!

Knife-edging is a way of combining two or more laser beams without the need for polarization. Basically, it boils down passing a beam just next to the edge of an angle mirror, and bouncing a second beam off the mirror, also just at the edge that the first beam passes by resulting in two parallel beams that are so close together that they can be seen as "combined". This method is how some major laser manufacturers can combine up to 20 or more diodes to make multi-watt arrays. The final output is always multimode by definition, but the fact that polarization is of no concern makes it attractive for combining many laser beams rather than just being able to combine two, like PBS cubes can.

Example of a knife-edged array:

__________________
Laser Resources (for n00bs and veterans alike!)

Sam's Laser FAQ (The Laser Bible)

http://www.repairfaq.org/sam/laserfaq.htm

RP Photonics Encyclopedia of Laser Physics and Technology

http://www.rp-photonics.com/encyclopedia.html

ULTIMATE DIY PROJECTOR REFERENCE

http://nqlasers.com/scannerreference...itle=Main_Page

SUCCESS is the best revenge.
ElektroFreak is offline   Reply With Quote
Old 08-05-2010, 09:22 PM #16
Meatball's Avatar
Class 3B Laser
 
Join Date: Feb 2008
Location: Lincoln, NE
Posts: 2,989
Rep Power: 242
Meatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond repute
Meatball Meatball is offline
Class 3B Laser
Meatball's Avatar
 
Join Date: Feb 2008
Location: Lincoln, NE
Posts: 2,989
Rep Power: 242
Meatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond reputeMeatball has a reputation beyond repute
Default Re: 3x 445nm LD PIV Plot

This is the kit laserman532 made for me.

Laserman532 445 Dual Knife Edge Beam Combiner KIT

You think I can get 2W+?

I'll bet I can. My driver is set for 1.25A max for each diode..

I'm going to use Dr Lavas cylindrical lens kit to fix divergence, and after the expected 3% losses, your graph is telling me I might get something as high as 2.5W! Your results seem to be very consistent with lots of others' results!
__________________
FIAT LUX

(\__/)
(='.'=)
(")_(")
Meatball 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


LinkBacks (?)
LinkBack to this Thread: http://laserpointerforums.com/f65/3x-445nm-ld-piv-plot-53927.html
Posted By For Type Date
445nm 1W (1000mW) Blue Brand New Laser Diode, HighTechDealZ This thread Refback 08-15-2015 07:38 AM
445nm Pen Laser Build This thread Refback 04-29-2011 12:34 PM
??? ????? ????????????? :) | ???????? 5 | LASERS.ORG.RU This thread Refback 03-26-2011 09:51 PM
HighTechDealZ - 445nm 1W (1000mW) Blue Brand New Laser Diode This thread Refback 02-08-2011 07:58 AM










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 04:56 PM.


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