Path: utzoo!mnetor!uunet!lll-winken!lll-tis!ames!ncar!gatech!purdue!i.cc.purdue.edu!j.cc.purdue.edu!pur-ee!uiucdcs!uxc.cso.uiuc.edu!uxe.cso.uiuc.edu!mcdonald
From: mcdonald@uxe.cso.uiuc.edu
Newsgroups: sci.electronics
Subject: Re: Seeing IR
Message-ID: <44300007@uxe.cso.uiuc.edu>
Date: 3 May 88 23:58:00 GMT
References: <2871@jumbo.dec.com>
Lines: 6
Nf-ID: #R:jumbo.dec.com:2871:uxe.cso.uiuc.edu:44300007:000:417
Nf-From: uxe.cso.uiuc.edu!mcdonald    May  3 18:58:00 1988


Diode lasers are available fromthe red (the 600 nm region) all the way
out to the far infrared (20000 nm). The materials used vary with wavelength:
aluminum, gallium and phosphorus in the red through indium and arsenic
in the near IR to lead salts in the far IR. I have personally seen the 
output from one at 805 nm- it put out 10 milliwatt which was just visible
when it hit a white card at 1 inch in a dark room.