Osram PL530 530nm laser diodes tested @75mw SLM

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holomaker
Posts: 763
Joined: Wed Jan 07, 2015 8:01 am

Re: Osram PL530 530nm laser diodes tested @75mw SLM

Post by holomaker » Sat Oct 03, 2020 8:26 am


kittylasers2

Re: Osram PL530 530nm laser diodes tested @75mw SLM

Post by kittylasers2 » Sat Feb 06, 2021 7:47 pm

If anyone wants to sell a controller board.. I'm looking for a driver for a white laser unit with the PL530 component. I don't do electronics, and I'd love to do some holography with it.

Loic74
Posts: 42
Joined: Sat Aug 10, 2019 9:09 pm
Location: France

Re: Osram PL530 530nm laser diodes tested @75mw SLM

Post by Loic74 » Wed Apr 14, 2021 9:14 am

Greetings,

Just received my RGB module from Dave and am now reading through the various resources on how to power it up.
Anyone knows if this laser will maintain beam characteristics (Power, SLM, coherence length...) if modulated at a few KHz? I'd like to try and use it as a cheap source for my holoprinter (https://youtu.be/EpnnGGCmX-I)
Thx
Loic

NB: I am also interested in a controller board from @Soda if he has spares.

soda
Posts: 37
Joined: Mon Oct 08, 2018 4:05 am

Re: Osram PL530 530nm laser diodes tested @75mw SLM

Post by soda » Sun Apr 18, 2021 4:41 am

Hi Loic,
Very interesting idea, by my knowledge, the red and blue diodes cannot be modulated without lost of coherence. The green OPSL module is different kind of animal and I suppose that it's quite possible to modulate it without lost of SLM, but coherence should be somewhat reduced, mainly due to variation in thermal load.
Currently I have not the drivers, I m looking for someone who can assemble it, due to lack of the time. Anyway, I can help you with modification of the design to allow the modulation.

holomaker
Posts: 763
Joined: Wed Jan 07, 2015 8:01 am

Re: Osram PL530 530nm laser diodes tested @75mw SLM

Post by holomaker » Mon Apr 19, 2021 6:17 am

One of the reasons for all the technology in the 530, was so it could be modulated quicker than conventional DPSS configuration. As of Now I’ve not tested for SLM while modulated, the initial IR output at the diode is quite narrow frequency to begin ..(distributing feedback Laser using a Holographic grading in the laser cavity)..

Loic74
Posts: 42
Joined: Sat Aug 10, 2019 9:09 pm
Location: France

Re: Osram PL530 530nm laser diodes tested @75mw SLM

Post by Loic74 » Mon Apr 19, 2021 7:41 am

Thank you @Soda and @Holomaker,

I am surprized a regular diode could not be modulated fast enough for pico-displays. What's more, losing single longitudinal mode would probably be a bonus in case of a pico-projector since they get into large efforts to despeckle the images. But I am probably missing something obvious.

Anyhow, I am happy to help assemble some drivers if that is an option, @Soda I sent you a PM

Cheers
Loic

holomaker
Posts: 763
Joined: Wed Jan 07, 2015 8:01 am

Re: Osram PL530 530nm laser diodes tested @75mw SLM

Post by holomaker » Mon Apr 19, 2021 5:41 pm

Remember these green lasers were in production for only a short period of time, and then quickly replaced w direct (easy to modulate) green diodes ....

Loic74
Posts: 42
Joined: Sat Aug 10, 2019 9:09 pm
Location: France

Re: Osram PL530 530nm laser diodes tested @75mw SLM

Post by Loic74 » Wed Apr 21, 2021 2:01 am

holomaker wrote:
Mon Apr 19, 2021 5:41 pm
Remember these green lasers were in production for only a short period of time, and then quickly replaced w direct (easy to modulate) green diodes ....
Interesting, I did not realize that

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