Date: Thu, 07 Feb 2002 08:58:47 -0500 (EST)

Author: Richard Berg

Subject: Re: Laser Purchase

Post:

John,

Wow!! You actually use a 30 mW laser in lectures? Our safety people will
not allow anything over 5 without our jumping through all kind of hoops -
big signs, goggles, limitations on how close the students can get, etc.

Dick Berg


On Tue, 5 Feb 2002, John McIntyre wrote:

> "George M. Caplan" wrote:
>
> > I have been asked to purchase a 1 mW He-Ne laser for use in lecture demos.
> > We have several old (circa 1987) 1mW Metrologic we use in lab.
> > What would you all suggest I buy now? Tell me the good, the bad, and the
> > ugly.
>
> My first suggestion would be that you need a much more powerful laser for
> lecture demos than you do for labs. We have two (one is never enough) Melles
> Griot lasers with a maximum output of 30mW. These date from 1996 so more
> powerful ones may now be available.
>
> John McIntyre
> Physics - Astronomy Domine Dept
> Michigan State University
> mcintyre@pa.msu.edu
>
>

***********************************************************************
Dr. Richard E. Berg, Director Phone: (301) 405-5994
Lecture-Demonstration Facility FAX: (301) 314-9525
Department of Physics e-mail reberg@physics.umd.edu
University of Maryland www.physics.umd.edu/lecdem
College Park, MD 20742-4111
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If you aren't part of the solution, you're part of the precipitate.
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