Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

6W Triple diode laser

Status
Not open for further replies.
richard86

richard86

0
Joined
Jan 29, 2011
Messages
150
Points
0
Re: A little build I've started.

Does it not change wavelenth when combining beams?
Like give out a diffrent colour?


Yeah good luck with this build mate
 





ARG

ARG

0
Joined
Feb 27, 2011
Messages
6,772
Points
113
Re: A little build I've started.

richard86 said:
Does it not change wavelenth when combining beams?
Like give out a diffrent colour?


Yeah good luck with this build mate
Click to expand...

The wavelength does not change. The colour will end up looking a little purplish when both the 445nm and 638nm are on.

Just like when combining red and green lasers it will end up looking yellow, but the wavelength is still 650nm and 532nm even though it appears ~590nm
 
Last edited:
ARG

ARG

0
Joined
Feb 27, 2011
Messages
6,772
Points
113
Re: A little build I've started.

Going to add updates to OP so it's easy to follow.

7WOyi.jpg

Ready for pressing! :D Using a 9mm diode press that I made on the lathe and a 5.6mm from WannaBurn that I bought when I started the hobby.

UB8JF.jpg

Applying a very thin layer of thermal paste to the insides of the modules where the diodes will go to fill up the microscopic cracks between the metal.

MeXqJ.jpg

Pressed & soldered. 26AWG on the mits and 24AWG on the 9mm's for better current carrying capabilities :D I also mounted the lens' in their respective barrels.


Also, a friendly reminder to those building a laser: Make sure your lens barrel threads into your module perfectly before pressing in the diode. I nearly pressed the Mitsubishi diode into a bad barrel. Could've easily ended with me buying another 75$ diode out of my pocket if I wasn't careful :gun:
 
Last edited:
TheDukeAnumber1

TheDukeAnumber1

0
Joined
Jun 7, 2012
Messages
1,683
Points
63
Re: A little build I've started.

ARGLaser said:
Applying a very thin layer of thermal paste to the insides of the modules where the diodes will go to fill up the microscopic cracks between the metal.
Click to expand...

Very nice, that should be standard on all diodes. How about putting a little arctic alumina on the backs of the diodes?

Like so.
dsc00327y.jpg
 
ARG

ARG

0
Joined
Feb 27, 2011
Messages
6,772
Points
113
Re: Build: Tri-Diode laser

Thanks :) I have my reasons for not adding compound to the backs, but I wont get into in this thread or the topic of discussion will never go anywhere expect about thermal properties.

I would take some power measurements of the diodes, but my LaserBee is WAY off calibration, and I'm waiting to get my Ophir back from MarioMaster. I thought my Ophir was off, but he tells me it's matching his +/- 1% Coherent Fieldmax so I can safely assume my LaserBee is reading around 10% low. I wish I had known this before so I could've gotten my dual diode laser properly metered, it could've been 5W for all I know.

I can still work out the PIV curve with the un-calibrated LaserBee, so I'll do that tomorrow and select the currents to run the diodes at.
 
Last edited:
sinner

sinner

0
Joined
Oct 27, 2011
Messages
2,565
Points
83
Re: Build: Tri-Diode laser

Congratulations ARG on starting up the building process, Hope everything goes as planned and smoothly.. Can't wait!!
 
lasersbee

lasersbee

0
Joined
Sep 20, 2008
Messages
17,622
Points
113
Re: Build: Tri-Diode laser

ARGLaser said:
Thanks :) I have my reasons for not adding compound to the backs, but I wont get into in this thread or the topic of discussion will never go anywhere expect about thermal properties.

I would take some power measurements of the diodes, but my LaserBee is WAY off calibration, and I'm waiting to get my Ophir back from MarioMaster. I thought my Ophir was off, but he tells me it's matching his +/- 1% Coherent Fieldmax so I can safely assume my LaserBee is reading around 10% low. I wish I had known this before so I could've gotten my dual diode laser properly metered, it could've been 5W for all I know.

I can still work out the PIV curve with the un-calibrated LaserBee, so I'll do that tomorrow and select the currents to run the diodes at.
Click to expand...

Why don't you send back your LaserBee to have it re-calibrated..
It may still be under warranty. Send me your LaserBee's S/N by
PM and we'll look it up.
We do live in the same country so shipping would be not need
to go across international borders.

BTW if you know your LaserBee is 10% low you can still use it
in the interim since you have a baseline. Even if uncalibrated the
output is still linear..


Jerry

You can contact us at any time on our Website: J.BAUER Electronics
 
Last edited:
ARG

ARG

0
Joined
Feb 27, 2011
Messages
6,772
Points
113
Re: Build: Tri-Diode laser

@Sinner thanks! I'll be getting more done today hopefully :)

Will do Jerry! I sent you a PM.

I didn't contact you about it earlier because I wanted to get the Ophir back and get all the data before I know for sure that it's off the rated +/-5% calibration.
 
lasersbee

lasersbee

0
Joined
Sep 20, 2008
Messages
17,622
Points
113
Re: Build: Tri-Diode laser

I got your PM and replied... I'll need some additional info.

I understand it now seems to be only 6% off instead of the
~10% you stated above. That seems a bit better....:yh:


Jerry

You can contact us at any time on our Website: J.BAUER Electronics
 
Last edited:
ARG

ARG

0
Joined
Feb 27, 2011
Messages
6,772
Points
113
Re: Build: Tri-Diode laser

lasersbee said:
I got your PM and replied... I'll need some additional info.

I understand it now seems to be only 6% off instead of the
~10% you stated above. That seems a bit better....:yh:
Click to expand...

Yeah, I was speaking in hyperbole then. The laser for the testing wasn't at thermal equilibrium yet either, so it may be more or less. For now it looks like at the lower powers it's around 10% off, but for the readings over 1.5W it's around 6% off.
Once I have the Ophir I can run the laser for a few hours to reach thermal equilibrium and take accurate readings and post the results in a different thread.
 
Trevor

Trevor

0
Joined
Jul 17, 2009
Messages
4,386
Points
113
Re: Build: Tri-Diode laser

ARGLaser said:
Yeah, I was speaking in hyperbole then. The laser for the testing wasn't at thermal equilibrium yet either, so it may be more or less. For now it looks like at the lower powers it's around 10% off, but for the readings over 1.5W it's around 6% off.
Click to expand...

That's a whole lot worse than 10% across the board...

I hope you get it taken care of...

Good luck...

Trevor
 
K

kaunak

0
Joined
Mar 29, 2008
Messages
212
Points
18
Re: Build: Tri-Diode laser

Hmm seems I was confused at first about the diodes used in this build. I thought it was going to be 3x 9mm for the awesome power they can output but you went with a 500mw mits instead. Any reason you chose the 638 over say a 5.6mm m140? The final wavelength will be cool to see and this is one of the coolest builds ive seen so far. Cant wait to see it finished :)
 
ARG

ARG

0
Joined
Feb 27, 2011
Messages
6,772
Points
113
Re: Build: Tri-Diode laser

kaunak said:
Hmm seems I was confused at first about the diodes used in this build. I thought it was going to be 3x 9mm for the awesome power they can output but you went with a 500mw mits instead. Any reason you chose the 638 over say a 5.6mm m140? The final wavelength will be cool to see and this is one of the coolest builds ive seen so far. Cant wait to see it finished :)
Click to expand...

Thanks! :)

The process for combing three 9mm diodes would result in a larger beam, and there may be some splitting in the beam.

Using the mits diode allows for perfect overlap and higher power density, making for a brighter, smaller beam.
 
Last edited:
Mrcrouse

Mrcrouse

0
Joined
Jul 10, 2009
Messages
1,476
Points
63
Re: Build: Tri-Diode laser

I hope the host gets to you soon, I am excited to see this!
 
Last edited:
ARG

ARG

0
Joined
Feb 27, 2011
Messages
6,772
Points
113
Re: Build: Tri-Diode laser

Mrcrouse said:
I hope the host gets to you soon, I am excited to see this!
Click to expand...

Knowing Canada Post it's probably going to take a couple more weeks. :crackup:

I hope to have it done soon after I get the host, I'm dying to build this :p
 
Status
Not open for further replies.




Top