Laser info needed

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Article #21025

#21025

From: Michael L. Ardai
Date: Wed, 29 Mar 1989 05:02

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(I am posting this for a friend without netnews access...)

I just bought a green HeNe laser.  In addition to the usual Alden
connector for the HV, it has a 1/8" phone plug labled 'electro-magnet'.
There appears to be a coil wound around the output mirror of the tube.
Any ideas what this could be for and how to drive it?  

/mike

(Michael L. Ardai,  ...!decwrl!sequent!sybil!ardai)-- 
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!bloom-beacon!bu-cs!bucsb!erics
From: erics@bucsb.UUCP (Michael L. Ardai)
Newsgroups: sci.electronics
Subject: Laser info needed
Message-ID: <2423@bucsb.UUCP>
Date: 29 Mar 89 05:02:19 GMT
Organization: Boston Univ Comp. Sci.
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