Osram PL530 530nm laser diodes tested @75mw SLM

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holomaker
Posts: 772
Joined: Wed Jan 07, 2015 8:01 am

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

Post by holomaker »

Good read as it applies to our little green lasers! As I suspected does not require cavity cooling like a DPSS..

https://www.laserfocusworld.com/lasers- ... ser-market
frozone
Posts: 5
Joined: Sat Dec 07, 2019 5:50 pm

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

Post by frozone »

soda wrote: Fri May 03, 2019 4:29 pm I have finished compact design of PL530 laser. Selected ones have output 100mW+, available for 250Euro + shipping (or equivalent in $). Tested for SLM by FPSI and for long term stability against I2 cell. Drivers will be available upon request.
Have stable fringes!
I’m definitely down.
holomaker
Posts: 772
Joined: Wed Jan 07, 2015 8:01 am

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

Post by holomaker »

Here’s my current build 75mw easily and with the attached expanding lens , makes it an easy task to collimate . The output Is as good as a Lasos ! By using the Pre installed expanding lens only, the output is as clean as if it went thru a 30-40x spatial filter. See below!
Attachments
PL530-75mw
PL530-75mw
96739524-F1C8-4EA4-B841-0234B88E3917.jpeg (1.24 MiB) Viewed 12604 times
Last edited by holomaker on Mon Dec 16, 2019 10:27 am, edited 3 times in total.
holomaker
Posts: 772
Joined: Wed Jan 07, 2015 8:01 am

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

Post by holomaker »

Shortly I’ll be selling a complete kit w laser head prewired and tested for 75mw, dual driver w fine adjustment on heater circuit, and acrylic collimating lens . Look for a quick video on how to put it together and test it for SLM operation... which I’ll post here as soon as I figure out how to 😝
All my units are new and have attached expanding lens to allow for tight collimation, or just use the built in lens only to shoot one beam holograms w no additional optics needed ! The distance was 30” between laser and target
Attachments
Pl530-expanded
Pl530-expanded
F95B3CE5-23C7-41D1-9FC3-95A93CAC1614.jpeg (71.64 KiB) Viewed 12601 times
holomaker
Posts: 772
Joined: Wed Jan 07, 2015 8:01 am

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

Post by holomaker »

Soda, how many mA is needed for 100mw ? I’ve been using 600 ma drivers w no damage so far.. :oops:
soda
Posts: 38
Joined: Mon Oct 08, 2018 4:05 am

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

Post by soda »

I newer exeed 500mA for the diode, even I have it tested to survive easily 800mA for short time with good cooling. In final builds I set the current close to maximum 480mA, due to at higer setings side transverse modes often occurs - Hermite (axial symetric around central main beam), which are at slighly different frequencies and not affecting only shape of the beam, but also ruin the coherence. This is the limiting factor of diode current. The expanded beam must be absolutely round, any other shape (eliptic, or even rounded square) is sign of these modes, side sample of the beam can be examined by FPSI for more peaks, better seen in I2 cell where can be identified only the side lobes by fine tuning through hyperfine I2 structure - fuorescence shows only the central part or side beams only.
The key is found the right case and PPLN temperature combination of the suitable PL530. Almost all are good for 85mW (450mA), while most of them can be set to aroung 95-105mW (480mA) and few are good up to 120mW (around 500mA).
Sorry to all, currently I'm too busy (at least to spring) for buiding complete units.
holomaker
Posts: 772
Joined: Wed Jan 07, 2015 8:01 am

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

Post by holomaker »

Yes these hit a ceiling @500ma , then leaves the SLM zone , not to return as power is increased!!! Unlike if it’s power is set too low , it will Still Lase, but no SLM..

Also have communication with Wolfgang and he hopes to be testing these shortly !
andriy_melnykov
Posts: 1
Joined: Mon May 11, 2020 3:56 pm

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

Post by andriy_melnykov »

Hi, I purchased one module with PL530 at ebay by holokidd. (Holomaker, is this you? :-)))
I wanted to ask: if I break a PL530, is there any source to buy only the laser?

Thanks!
frozone
Posts: 5
Joined: Sat Dec 07, 2019 5:50 pm

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

Post by frozone »

Oh definitely. If you only need the diode, they're cheap as dirt online. Might even be a challenge to buy only one rather than a pack of 50.
holomaker
Posts: 772
Joined: Wed Jan 07, 2015 8:01 am

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

Post by holomaker »

They don’t have on collimating optics attached to them,
only mine does ....
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