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Entry  Thu Jul 16 04:59:38 2009, Dmass, Laser, PSL, Razor Blades! Photo_1.jpgPhoto_3.jpg
    Reply  Thu Jul 16 15:01:48 2009, Koji & Connor , Laser, PSL, Razor Blades! 
       Reply  Thu Jul 16 17:43:59 2009, Dmass, Laser, PSL, Razor Blades! 
          Reply  Mon Jul 20 23:19:49 2009, rana, Laser, PSL, Razor Blades! 
             Reply  Tue Jul 21 20:41:56 2009, Dmass, Laser, PSL, Razor Blades! 
    Reply  Fri Jul 17 15:39:31 2009, Dmass, Laser, PSL, Razor Blades! RazorScans.pdf
Message ID: 179     Entry time: Thu Jul 16 17:43:59 2009     In reply to: 178     Reply to this: 184
Author: Dmass 
Type: Laser 
Category: PSL 
Subject: Razor Blades! 

Quote:

Quote:

Since the beamscan is in a questionable state of scanny goodness, Koji advised that I do some razor blade occlusion power measurements of the beam and then fit an erf to it to find the waist. I took data with the tinker toys pictured below.

I will compare these results with some beamscans results to verify (hopefully) that the beamscan is outputting useful results, not lies.

 

Actually, it would be nicer if we have a calibrated micrometer screw for the thread.
Connor and I tried to make another set of the razor blade arrangement with a micrometer.
We put it on the PSL optical table. Please use it.

 

I got about a .002" error using a micrometer with my other setup, I expect this will suffice. If the errors in position end up too large I will use the new setup.

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