25W laser diode schematics

• Jan 17, 2014

• #1

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jnbortka

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I found this diode on amazon OSRAM - SPLPL90 - DIODE, LASER, 905NM, 25W
Please spare me the safety speech, I know this is an extremely powerful laser. Would someone please assist me with making a schematic for it? I don't know the values needed for the battery(s), resistors, or capacitors. I'm not very good with the math aspect of electronics. Thank you in advance!

 

Last edited: Jan 17, 2014

• Jan 17, 2014

• #2

Tmack

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40a current and 11rad divergence. Wtf?

 

Last edited: Jan 17, 2014

• Jan 17, 2014

• #3

FireMyLaser

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- Pic of a crummy looking LED
- $65
- Seems legit.

 

• Jan 17, 2014

• #4

BShanahan14rulz

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• Jan 17, 2014

• #5

Blarg King

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I'm sorry to break this to you, but thats totally fake.

1) That picture looks like an LED(?), laser diodes have 3 short pins, not 2 long legs
2) Pretty sure the most powerful laser diodes you can get (easily) are rated at 3.5 Watts
3) Even if it was 25 Watts, it would cost way more than 65$\

Also good luck finding portable batteries that can deliver 40 Amps.

 

• Jan 17, 2014

• #6

Atomicrox

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There you go: https://www.jameco.com/Jameco/Products/ProdDS/2192763.pdf

 

• Jan 17, 2014

• #7

Blarg King

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Huh. Well color me surprised. But nowhere on that Amazon product page does it say its pulsed.

So it is 25 watts...for 1 to 100 nanoseconds.

 

• Jan 17, 2014

• #8

Cyparagon

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These have been discussed many, many times in the past. They are for rangefinders or similar and average 10-30mW. It is not what you want.

 

• Jan 18, 2014

• #9

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Asmodian

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10^-7 sec long pulses of 30W, at 0.1% duty cycle.

 

• Jan 18, 2014

• #10

bloompyle

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Blarg King said:

I'm sorry to break this to you, but thats totally fake.

1) That picture looks like an LED(?), laser diodes have 3 short pins, not 2 long legs
2) Pretty sure the most powerful laser diodes you can get (easily) are rated at 3.5 Watts
3) Even if it was 25 Watts, it would cost way more than 65$\

Also good luck finding portable batteries that can deliver 40 Amps.

Click to expand...

1) I've worked with laser diodes with 4 legs, 3 legs, and 2 legs. The 685nm diodes have just that, 2 long legs.

Also c-mounts have no legs, and TO3's have like 8 legs or something (don't quote me on that).

Legs means nothing really. I have seen 5.6mm diodes with 2-4 legs



2) You can easily get diodes 5-10W and beyond in 808nm. Easily available, and not even terribly expensive. You can get a 10W 808nm here for about the same cost as a well made 445nm full laser.

Just saying, best to not generalize.




3) I agree