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Re: [ATM] LWT setup questions

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Subject: Re: [ATM] LWT setup questions
From: "john sherman" <atm@mail.johnspics.com>
Date: Sat, 21 May 2005 15:59:59 -0400
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Hi Nils Olof,

>but I just want to point out a potentially serious
>but avoidable problem. 

Excellent point, remembering that in measuring the LWT requires 10 times the precision of the Couder test. A sturdy bench is a requirement. 

>, a laser diode run at sub-lasering current

That tiny light source provides more precision in measuring. The extra diffraction hurts most tests, but the LWT gets easier and better.

John
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