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Old 04-22-2011, 05:10 PM #1
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Default Question on diode construction

Hi,

Im doing a presentation in school on lasers, and i have found a lot of information on the forums helpful. However, one question i could not find from searching the forum or from Sams laser guide is what makes laser diodes have a different wavelength. Is it the physical construction of the diode? Or does it have to do with the materials its made from?

Any information would be much appreciated!


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Old 04-23-2011, 01:07 AM #2
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Default Re: Question on diode construction

There are several factors...

but read a little closer, the answer lies within!

Sam's Laser FAQ - Diode Lasers
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Old 04-23-2011, 07:32 PM #3
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Default Re: Question on diode construction

This might help also.

From the linked wiki:

405nm and 445nm are InGaN Indium Gallium Nitride
532nm currently widely available is DPSS pump diode 808nm is GaAlAs Gallium Aluminum Arsenide
635nm and 657nm and 670nm AlGaInP Aluminum Gallium Indium Phosphide

Each of these semiconductors have different junction forward voltages and even different conversion efficiencies between batches.
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405 still in sled
445 in aixiz module
473 lab style Received, v4 driver board with loose pot...got to get out the old soldering iron
2 ~5mw 532 dpss pointers
1 ~100mw lab style 532 dpss
1 ~200mw lab style 532 dpss

632.8 HeNe <5mw
632.8 HeNe ~10mw
2 635 pointers ~5mw
1 650 pointer ~5mw
1 DX ~200mw "Dilda-laser"

6 680 Diodes waiting on hosts and drivers


2 Guidesman hosts received

2 ssy-1 modules (1 with exploded flash lamp) 1 PFN

Various bits and pieces and a few aixiz modules with low power diodes
do not have a power meter

Needed - Drivers for 12x and 445

Last edited by NetGod3Com; 04-24-2011 at 04:04 AM. Reason: more info from wiki
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