Old 02-22-2012, 05:43 PM #1
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Default How does this diode work?

I friend of mine asked what the lasing medium was for my new o-like
Cute High power 250mW red laser torch/focusable [OL-CRL-250] - $54.99 : Zen Cart!, The Art of E-commerce
I was wondering, how do these diodes work? I know the basic concept of the electrons, the energy on both sides of the channel bouncing the light back and forth until it comes out the end. But whats in the middle? is there a crystal involved?

thanks guys, I feel stupid asking this


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Old 02-22-2012, 06:20 PM #2
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Default Re: How does this diode work?

Hmm I would like to know too. And what diode it is.. I have the same laser you do.
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Old 02-22-2012, 06:30 PM #3
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Default Re: How does this diode work?

Ehm ..... trying to explain in few words how a laser diode work, and all the related theory involved, is "a little bit" complicated ..... (using an euphrmism )

Here are some starting links that can give you some basical concepts:

Laser diode - Wikipedia, the free encyclopedia

Laser Diode Theory &amp Operation :: Radio-Electronics.Com

Laser Fundamentals
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Old 02-22-2012, 07:03 PM #4
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Default Re: How does this diode work?

Quote:
Originally Posted by HIMNL9 View Post
Ehm ..... trying to explain in few words how a laser diode work, and all the related theory involved, is "a little bit" complicated ..... (using an euphrmism )

Here are some starting links that can give you some basical concepts:

Laser diode - Wikipedia, the free encyclopedia

Laser Diode Theory &amp Operation :: Radio-Electronics.Com

Laser Fundamentals
Thank you sir


I wonder what the substrate material is in this diagram?

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Old 02-22-2012, 08:36 PM #5
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Default Re: How does this diode work?

I don't know about laser diodes, but for normal white and blue high-flux LEDs, the substrate of choice is synthetic sapphire.. Perhaps its similar for LDs?
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Old 02-22-2012, 08:48 PM #6
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Default Re: How does this diode work?

I think it is generally the same material as the active region but a different type. GaAs reds and GaN blues, maybe substrate is AlGaAs and InGaN

Maybe we can get PBD to upload the contents of his brain into this thread
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Old 02-22-2012, 08:58 PM #7
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Default Re: How does this diode work?

Quote:
Originally Posted by BShanahan14rulz View Post
I think it is generally the same material as the active region but a different type. GaAs reds and GaN blues, maybe substrate is AlGaAs and InGaN

Maybe we can get PBD to upload the contents of his brain into this thread
hehe!

thanks for the knowledge guys, you all are wizards in disguise
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