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Entry  Sat Apr 24 15:05:41 2010, Kevin, Update, PSL, 2W Vertical Beam Profile vbp.jpg
    Reply  Sat Apr 24 15:50:47 2010, Koji, Update, PSL, re: 2W Vertical Beam Profile 
       Reply  Mon Apr 26 16:51:37 2010, Kevin, Update, PSL, re: 2W Vertical Beam Profile 
          Reply  Mon Apr 26 17:34:31 2010, Koji, Update, PSL, re: 2W Vertical Beam Profile 
             Reply  Tue Apr 27 15:29:16 2010, Kevin, Update, PSL, re: 2W Vertical Beam Profile vbp.jpgvbp_residuals.jpg
                Reply  Wed Apr 28 14:22:36 2010, Kevin, Update, PSL, re: 2W Vertical Beam Profile BeamFit.nb.tar
Message ID: 2851     Entry time: Tue Apr 27 15:29:16 2010     In reply to: 2847     Reply to this: 2857
Author: Kevin 
Type: Update 
Category: PSL 
Subject: re: 2W Vertical Beam Profile 

I thought that the micrometer I was using to move the razor through the laser beam was metric; however, it is actually english.

After discovering this mistake, I converted my previous measurements to centimeters and fit the data to

w = sqrt(w0^2+lambda^2*(z-z0)^2/(pi*w0)^2) with the following results:

reduced chi squared = 14.94

z0 = (-4.2 ± 1.9) cm

w0 = (0.013 ± 0.001) cm

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