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From: farren@hoptoad.uucp (Mike Farren)
Newsgroups: comp.arch
Subject: Re: how fast could disks be (Mach 1
Message-ID: <2792@hoptoad.uucp>
Date: Wed, 19-Aug-87 06:03:45 EDT
Article-I.D.: hoptoad.2792
Posted: Wed Aug 19 06:03:45 1987
Date-Received: Fri, 21-Aug-87 07:12:23 EDT
References: <1189@k.gp.cs.cmu.edu> <3300009@uiucdcsm>
Reply-To: farren@hoptoad.UUCP (Mike Farren)
Organization: Nebula Consultants in San Francisco
Lines: 18

In article <3300009@uiucdcsm> grunwald@uiucdcsm.cs.uiuc.edu writes:
>
>Are there non-mechanical methods of directing a laser beam? Any pointers to
>references?

A Bragg Cell is an electro-acoustical device which, when an RF frequency
is applied to it, changes its effective index of refraction proportional
to the frequency of the applied signal.  This does very effective beam
manipulation.  Sorry, don't have references - try a good electro-optics
reference.  The technology has been around at least 10 years.



-- 
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                 "... if the church put in half the time on covetousness
Mike Farren      that it does on lust, this would be a better world ..."
hoptoad!farren       Garrison Keillor, "Lake Wobegon Days"