Old 07-21-2015, 04:45 PM #33
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Default Re: [Dual 411nm 1335mW] 2D MAG with PBS cube & Newport mounts.

I'm wanting to add a second diode to my big expanded output host now, I wonder how much loss is typical through one of those cubes at 520nm?


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Old 07-21-2015, 04:56 PM #34
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Default Re: [Dual 411nm 1335mW] 2D MAG with PBS cube & Newport mounts.

Quote:
Originally Posted by Alaskan View Post
I'm wanting to add a second diode to my big expanded output host now, I wonder how much loss is typical through one of those cubes at 520nm?
HHmmmm ??? Contemplating some Combiner action...are we ???

Two (2) green's @ 520nm line...2+Watts of 520 beauty !!!!!!

You will need to run one (1) beam thru a wave plate...to maintain beam-on-beam orientation and rotate the polarization to work with the PBS.

I would approx. under 10% loss between the PBS and Waveplate optics...maybe 7~8% Optic r FUN !!!
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Old 07-21-2015, 05:41 PM #35
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Default Re: [Dual 411nm 1335mW] 2D MAG with PBS cube & Newport mounts.

I dont mind having the beams cross one another like a big + due to the rectangular output of these diodes, but would the beams cancel eachother crossing at 90 degrees in the center? If the beam is going to be expanded anyway, maybe a cube isn't necessary and some kind of knife edge will work? I better start googling the answers! Will be researching on this for awhile.

Edit: nevermind the knife edge idea, the beam needs to be turned 90 degrees and not much room. Looks like I need a polarizing beam splitter cube.

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Old 07-22-2015, 03:10 AM #36
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Default Re: [Dual 411nm 1335mW] 2D MAG with PBS cube & Newport mounts.

Quote:
Originally Posted by Alaskan View Post
I dont mind having the beams cross one another like a big + due to the rectangular output of these diodes, but would the beams cancel eachother crossing at 90 degrees in the center? If the beam is going to be expanded anyway, maybe a cube isn't necessary and some kind of knife edge will work? I better start googling the answers! Will be researching on this for awhile.

Edit: nevermind the knife edge idea, the beam needs to be turned 90 degrees and not much room. Looks like I need a polarizing beam splitter cube.
Yikes....it will be a long answer....First....if the beams cross....they will not cancel each other out !! So....you will get a + shape...yes....So...where the beams cross...at the center....this square will present the highest luminosity....because...this is where the highest concentration of photons are.

SO....you can do this....a cross or plus.....one LD longer bar goes up/down....and the other LD longer bar goes left/right

When using a PBS ( Polarized Beam Splitter )...the beams MUST enter the PBS cube with their polarization at 90 degree to each other for the cube to work properly.

There are two (2) ways to do this !!!

1) The beams are at a 90 degree polarization to each other. This condition is seen when the longer bar geometries make a cross / + pattern. So...Beam 1 hits the front of the PBS cube with a shape that looks like this I and the Beam 2 hits the side of the PBS with a shape that looks like this ---
In this situation....the polarization is correct....and the PBS cube can and does combine the beams !!

2) Now...this is a little more complicated !!! BOTH beams enter the PBS cube..... like this I or this --- BUT.....One of the beams must pass thru what is known as a 1/4 wave waveplate......BEFORE it enters the cube.
The waveplate rotates the electromagnetis field....by 1/4 turn....and thereby sets up the condition where the polarization is correct....and the PBS cube can and does combine the beams !!
BUT....in the above layout.....you do NOT get a cross shape....for the beam geometry is NOT rotated.....just the polarization.....so in this case....one gets a beam-on-beam condition.....so NO cross....just a fat bar !!!!!

A PBS can and does work in either lay out. With the second condition...I believe the resulting spot at the far field....may look a little brighter....but....
with the cross....the far field look more like a spot...vs a bar !!!

MMmmmm....I like'em both !!!!!....and have used a PBS with each method !!!
Aren't optics fun !!!!!!!!!!!
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Old 07-22-2015, 05:20 AM #37
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Default Re: [Dual 411nm 1335mW] 2D MAG with PBS cube & Newport mounts.

Thanks, I like the crossed beam idea, but if I do use a wave plate, can you link me to something I can use for this to put both beams together into one bar on the output? Thank you so much for explaining this to me.

Chris
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Old 07-22-2015, 12:05 PM #38
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Default Re: [Dual 411nm 1335mW] 2D MAG with PBS cube & Newport mounts.

I'm sorry, did someone mention laser viagra?

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Old 07-23-2015, 12:44 AM #39
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Default Re: [Dual 411nm 1335mW] 2D MAG with PBS cube & Newport mounts.

Quote:
Originally Posted by Alaskan View Post
Thanks, I like the crossed beam idea, but if I do use a wave plate, can you link me to something I can use for this to put both beams together into one bar on the output? Thank you so much for explaining this to me.

Chris
Chris,

For Optics, I use;

1) Optical Components
2) Lasershow Parts
3) https://www.lasertack.com/en/t/imprint

All three have good optics....for much less than Edmonds or Thor !!

Delivery time is a slight PITA....BUT....All three places are run by really good people !!!

I really like and use the Flexmounts to mount my optics. There are micro MM1 mounts....but ...they come up on fleabay....rarely !!

I have a method for using epoxy to attach the FS Bounce mirror, Dichroic mirror, PBS cube or wave plate to the Flexmount.

If anybody is interested....post here....and I will Word Smith an outline document !!! Again....LESS epoxy is the RULE !!! That crap gets on everything !!!!

Using optics is challenging....to mix, combine or knife edge beams....

And one best have some patience to do a proper alignment !!! But....the result is worth it !!!!!!!! Combiners Rule !!!
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Purple pHAZE Combiner - Red + Blue = Purple-Completed http://laserpointerforums.com/f42/pu...ple-93717.html
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Old 07-23-2015, 01:39 AM #40
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Default Re: [Dual 411nm 1335mW] 2D MAG with PBS cube & Newport mounts.

OK, I've been wondering what I should use to glue a FS mirror on to something please do tell and thank you for the links. I went ahead and bought a cube: PBS 520nm 532nm Green Polarization Beamsplitter Polarizing Cube Laser Diode | eBay
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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.

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Old 07-23-2015, 02:34 AM #41
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Default Re: [Dual 411nm 1335mW] 2D MAG with PBS cube & Newport mounts.

Quote:
Originally Posted by Alaskan View Post
OK, I've been wondering what I should use to glue a FS mirror on to something please do tell and thank you for the links. I went ahead and bought a cube: PBS 520nm 532nm Green Polarization Beamsplitter Polarizing Cube Laser Diode | eBay

The epoxy I use is labled..." ACE clear resin 5min epoxy "....just from Ace Hardware....works good....available everywhere...even in Alaska !!!

But...do NOT dick around with your positioning too long....for ya got about 5min....and then is starts to stiffen up !!
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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
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Old 07-23-2015, 10:27 AM #42
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Default Re: [Dual 411nm 1335mW] 2D MAG with PBS cube & Newport mounts.

I'll use epoxy all the time especially to hold drivers after soldering to diode pins. Put dabs on the corners to the module sink so it doesn't flex. Always 5 minute epoxy. Have tried quite a few with good results all around IF you are careful about getting equal parts and blend well.
Personally I do a quick premix with something like a toothpick and then spread it over itself many many time in different directions using a razorblade. There's kind of an art to knowing when it's right and how much time you have to work with it.
Definately agree with less is better! Man can it turn on you with one false move. Nothing fun about realizing you just got some on a finger and you are handling something critical.
Yes that link to a pic of my 532nm viagra laser is a working unit
My father once gave me a viagra tie. It had those tiny blue viagra pills all over it. Always said they should have put an air bladder in it to make it rise lol
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Projector - PD2
O-Like mini red/green to yellow module
Beam Expanders - Dragon Lasers 2x & 5x with universal adapters
LPM's - Modified AW TEC, Custom 6.8W+ Ophir
Datalogger - ARG
Chargers - Ultrafire WF139, (2) Xtar WP2, Nitecore i2, UM20, (3) i4, (2) D4 , Opus BTC-3400 V2.2
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Old 07-23-2015, 11:57 AM #43
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Default Re: [Dual 411nm 1335mW] 2D MAG with PBS cube & Newport mounts.

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My father once gave me a viagra tie. It had those tiny blue viagra pills all over it. Always said they should have put an air bladder in it to make it rise lol
If your tie stays inflated for longer than four hours, contact a tailor immediately or serious problems could occur?
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Old 07-23-2015, 05:43 PM #44
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Default Re: [Dual 411nm 1335mW] 2D MAG with PBS cube & Newport mounts.

My god i have been gone for too long... This thing is BEAST! too bad i never got to fully understand wave/ light particle physics.... I guess that's cause im still in high school. *sigh

@ OP amazing work! maybe you can teach me a little somthin' sometime
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Old 07-23-2015, 07:10 PM #45
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Default Re: [Dual 411nm 1335mW] 2D MAG with PBS cube & Newport mounts.

I want to combine a single mode laser diode with a multimode diode using a cube, but the focus points for infinity will be different, I fear.
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Old 07-23-2015, 07:17 PM #46
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Default Re: [Dual 411nm 1335mW] 2D MAG with PBS cube & Newport mounts.

Speaking of glue, I accidentally mixed up my epoxy caps the other day
I did a lol and even made my wife laugh at your retort Gabe
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Old 08-19-2016, 02:53 AM #47
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Default Re: [Dual 411nm 1335mW] 2D MAG with PBS cube & Newport mounts.

Using 2 NUBM44s, power consumption would require a 3D maglite and 3 x 32650 batteries.



I had a brainstorm regarding the use of .5in Newport MM-050-HEX mounts.

The mirror cube and Mounts could all be secured with just enough compound to hold them in place for alignment adjustments.

Once adjustments are made the cube and mirror could be secured with compound directly to the sink/mount assembly.

At that point since the Newport mounts are only secured with minimal adhesive they could be removed and reused.



This would also allow the building of much smaller diode arrays of this type.
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