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Old 08-17-2010, 05:20 AM #49
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Default Re: 300mW 808nm Laser diodes on eBay for $4.49 free shipping!

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Originally Posted by Xplorer877 View Post
Yup, but unlike Blu-ray diodes, they WILL survive accidental reverse voltage. I accidentally hooked my 2nd diode up the wrong way, case ground, after powering the diode like this for a minute or so, cursing that again that I got a dud, then I realized what I had done. But I decided to check it just in case. I fliped it around... and waa-laa, 300mW at 400mA!!!

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confirmed, it took it, and still works.


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Old 08-17-2010, 02:13 PM #50
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Default Re: 300mW 808nm Laser diodes on eBay for $4.49 free shipping!

whats a good current to run these at? 400mA?
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Old 08-17-2010, 03:48 PM #51
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Default Re: 300mW 808nm Laser diodes on eBay for $4.49 free shipping!

Yeah they produce a bar that doesn't collimate that well, at least with an Aixiz acrylic lens.
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Old 08-17-2010, 04:47 PM #52
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Default Re: 300mW 808nm Laser diodes on eBay for $4.49 free shipping!

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whats a good current to run these at? 400mA?
That's what I'm running mine at. The diode will get pretty warm at that current pretty fast. But it does seem pretty powerful. It burns electrical tape like crazy. I estimate they're around 300mW at that current.

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Old 08-17-2010, 08:30 PM #53
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Default Re: 300mW 808nm Laser diodes on eBay for $4.49 free shipping!

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Originally Posted by Xplorer877 View Post
That's what I'm running mine at. The diode will get pretty warm at that current pretty fast. But it does seem pretty powerful. It burns electrical tape like crazy. I estimate they're around 300mW at that current.

-Tony
The ones i bought operate max at 450mA but i think 420 would be a good number
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Old 08-19-2010, 01:25 AM #54
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Default Re: 300mW 808nm Laser diodes on eBay for $4.49 free shipping!

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The ones i bought operate max at 450mA but i think 420 would be a good number
For the smoke coming from the diode, of course...
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Old 08-19-2010, 01:29 AM #55
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Default Re: 300mW 808nm Laser diodes on eBay for $4.49 free shipping!

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For the smoke coming from the diode, of course...
Why would smoke come from the diode?
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Old 08-19-2010, 08:28 AM #56
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Default Re: 300mW 808nm Laser diodes on eBay for $4.49 free shipping!

"420" is commonly used as a euphemism for marijuana, which is generally smoked by its users. I was making a joke.
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Old 08-21-2010, 07:25 PM #57
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Default Re: 300mW 808nm Laser diodes on eBay for $4.49 free shipping!

As much as im ashamed to say im a seasoned marijuana user and I've never heard '420' used in any way, shape or form relating to marijuana.

Must be an American thing...
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Old 08-22-2010, 01:36 AM #58
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Default Re: 300mW 808nm Laser diodes on eBay for $4.49 free shipping!

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As much as im ashamed to say im a seasoned marijuana user and I've never heard '420' used in any way, shape or form relating to marijuana.

Must be an American thing...
Perhaps. Search craigslist.com for "420" and you'll find hundreds of examples of what I'm referring to.
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Old 08-28-2010, 10:56 AM #59
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Default Re: 300mW 808nm Laser diodes on eBay for $4.49 free shipping!

if i have a 650nm laser housing(aixiz) will it work with a 808nm 300mw laser diode?

thanks in adavance
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Old 08-28-2010, 03:35 PM #60
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Default Re: 300mW 808nm Laser diodes on eBay for $4.49 free shipping!

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Originally Posted by mikey395 View Post
if i have a 650nm laser housing(aixiz) will it work with a 808nm 300mw laser diode?
These are 5.6mm diodes, so they fit just fine in an AixiZ module.
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Old 02-08-2011, 10:16 PM #61
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Default Re: 300mW 808nm Laser diodes on eBay for $4.49 free shipping!

Hello

I want to make a burning laser to grab on wood.
A 300mw 808nm laser with the correct driver and the correct lenses can do it?

Wich is the best driver and lenses for it?

thank you so much

Last edited by pasacan; 02-09-2011 at 04:37 PM.
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Old 02-09-2011, 04:53 PM #62
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Default Re: 300mW 808nm Laser diodes on eBay for $4.49 free shipping!

hello

I've seen this
DIY TTL Diode Driver.....

Is this driver valid?

And what about the lenses? A plastic lenses from a red laser pointer can be valid?


Last edited by pasacan; 02-09-2011 at 05:06 PM.
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Old 02-11-2011, 11:07 AM #63
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Default Re: 300mW 808nm Laser diodes on eBay for $4.49 free shipping!

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Originally Posted by pasacan View Post
Hello

I want to make a burning laser to grab on wood.
A 300mw 808nm laser with the correct driver and the correct lenses can do it?

Wich is the best driver and lenses for it?

thank you so much
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Old 03-05-2011, 07:13 AM #64
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Default Re: 300mW 808nm Laser diodes on eBay for $4.49 free shipping!

here are the specs for that laser diode....
Parameters are as follows:
Continuous output power (W) 0.3
Peak wavelength λ (nm) 808 10
Spectral width of Δλ (nm) ≤ 2.5
Threshold current (A) ≤ 0.10
Current (A) ≤ 0.40
Operating Voltage (V) ≤ 2.0
Slope efficiency (W / A) ≥ 0.95
Beam divergence angle θ ⊥ θ ∥ (deg) 40 10
Wavelength temperature coefficient (nm / ℃) 0.3
Light-emitting area (μm) 30 1
Series resistance (Ω) ≤ 1.0
Polarized TE
Package TO3/C-block
Operating temperature (℃) 10 ~ 40
Storage Temperature (℃) -10 ~ 60

mark








UOTE=Jex;736977]808nm 300mW High Power Burning Infrared Laser Diode Lab

Is this worth getting?, Im aware of the dangers of IR and just need advice on price and operating current/voltage.

And just thought i would share it in case its a good deal[/QUOTE]
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