Old 09-22-2013, 09:03 PM #1
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Question 13w laser diode 28?!?!?

Just a question but is this what i think it is?A 13w laser diode for only 28?(i'm new to laser btw)
New 905nm 13W high power infrared ray Laser Diode to measure cloud distance | eBay


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Old 09-22-2013, 10:12 PM #2
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Default Re: 13w laser diode 28?!?!?

That is a really strange looking diode lol. You'll need a custom heatsink to hold that in. As for the power i have NO IDEA haha. Good luck on this one
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Old 09-22-2013, 10:27 PM #3
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Default Re: 13w laser diode 28?!?!?

Maybe the input is 13W?
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Old 09-22-2013, 10:30 PM #4
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Default Re: 13w laser diode 28?!?!?

Cel might be right, it only says "power :13W" no information on the voltage or current is given.
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Old 09-23-2013, 01:03 AM #5
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Default Re: 13w laser diode 28?!?!?

Wow weird diode... perhaps a quick question to the seller will help
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Old 09-23-2013, 09:17 AM #6
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Default Re: 13w laser diode 28?!?!?

humm i found a similar diode but it says NOTE THIS IS NOT "BURNNING LASER" it is High power Pulse Diode what is a high power pulse diode?

NEW 904nm LASER DIODE 10 W infrared ray Laser Diode to measure cloud distance | eBay
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Old 09-23-2013, 10:11 AM #7
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Default Re: 13w laser diode 28?!?!?

Hmm...

Quote:
LD65 10 watt pulses

Laser Diode, Inc.
Lasers,Laser Diodes
Peak Wavelength (m)=904n
P(O)rad Min.(W)Rad. Out. Power=10
@I(F) (A) (Test Condition)=40
Spectral Bandwidth (m)=7.0n
t(resp) Max.(s) Response Time=500p
I(FP) Max.(A)Forward Pulse Cur=40
@t(w) (s) (Test Condition)=200n
V(F) Max.(V) Forward Voltage=1.2
@I(F) (A) (Test Condition)=50m
V(R) Max.(V) Reverse Voltage=3.0
Semiconductor Material=GaAs
Package=Stud
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Old 09-23-2013, 10:46 AM #8
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Default Re: 13w laser diode 28?!?!?

Looks like a stud mount package. Shouldn't be too hard to mount to a heatsink but will definitely need to be custom.

40A at 1.2V? you'll need a beefy supply for that.
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Old 09-23-2013, 03:49 PM #9
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Default Re: 13w laser diode 28?!?!?

Someone with Lathe Please Grab some
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Old 09-23-2013, 05:02 PM #10
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Default Re: 13w laser diode 28?!?!?

Got a lathe, but don't want to take the risk
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Old 09-23-2013, 06:32 PM #11
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Default Re: 13w laser diode 28?!?!?

Pulse is a pulse is a pulse.
What pulse length it can handle I ask .. is it those 200ns from the sheet ? That sounds like terribly short pulse.
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Old 09-23-2013, 09:08 PM #12
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Default Re: 13w laser diode 28?!?!?

Maybe some kind of strange VECSEL diode.
Here is a pic of one i found with a quick search
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Old 09-24-2013, 03:21 AM #13
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Default Re: 13w laser diode 28?!?!?

People bring these up several times a year. That's the peak power. The average is a few milliwatts at best. They're for range finders and lidar and stuff like that.
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Old 09-24-2013, 03:35 AM #14
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Default Re: 13w laser diode 28?!?!?

Quote:
Originally Posted by eytyxhs View Post
Someone with Lathe Please Grab some
Lathe, yes. Money, no. I'd love to give it a go, but the 5W contest has cleaned me out completely.
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Old 09-24-2013, 04:29 AM #15
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Default Re: 13w laser diode 28?!?!?

It is an OSI Inc CVD65 905nm 13 W pulsed laser

http://www.laserdiode.com/product_pd...pages1and2.pdf

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Old 09-24-2013, 06:46 AM #16
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Default Re: 13w laser diode 28?!?!?

Okay, since at least one person missed my post, I'll make another and go through the math using the datasheet above.

They are rated for a max of 0.1% duty cycle. 0.1% duty cycle on 13W is 13mW. 13mW is your average power. If you go much higher, you melt it.
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