Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!snorkelwacker!mit-eddie!mit-amt!adam
From: adam@mit-amt.MEDIA.MIT.EDU (Adam Glass)
Newsgroups: sci.electronics
Subject: Re: Looking for cheap visible red laser diodes
Summary: How about $19/ea?
Keywords: laser diode red
Message-ID: <1237@mit-amt.MEDIA.MIT.EDU>
Date: 19 Dec 89 22:24:06 GMT
References: <2290@sactoh0.UUCP>
Organization: Hack & Slash - Boldly doing evil, subversive things.
Lines: 25

mahaun@sactoh0.UUCP (Mark A. Haun) writes:
> Does anybody know of a source for visible red laser diodes?

A local surplus store is selling them for $19 each. They have laser diodes
from 7 to 25 watts. Since I know almost nothing about lasers, let me quote
them:
  "These Gallium-Arsenide injection diodes emit coherent infra-red
   radiation. The diode is built in a hetero-junction structure,
   consisting of 3 distinct layers: N-type, P-type gallium asenide [sic]
   and P-type gallium aluminum arsenide. Specs: 7 to 25 watts, lfm 40A,
   Lth 1A, typical peak forward coltage @ Lfm 8 volts, @ 50 ma 1.2 volts."

They're $19 each or 3 for $49. Let me know if you want an address/more
info/etc...

> I could think of a thousand neat uses for these things right off
> the bat -- it sure would be fun to play around with a few!

Pardon my ignorance, but what neat things can you do with these
low-power lasers?

Adam
--
Adam Glass, ex-"hacker" at the Media Lab  \  "Something is going to happen...
Email to: adam@media-lab.media.mit.edu     \    ...something wonderful."