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Entry  Wed Feb 6 20:19:52 2013, Manasa, Update, Optics, G&H and LaserOptik mirrors 
    Reply  Thu Feb 7 14:10:25 2013, Manasa, Update, Optics, LaserOptik - AR Reflectivity - Bad data SN6_R.pngSN6_R.png
       Reply  Fri Feb 8 21:14:52 2013, Manasa, Update, Optics, G&H - AR Reflectivity  pr2.png27_1044419003.bmp
          Reply  Fri Feb 8 22:49:31 2013, Koji, Update, Optics, G&H - AR Reflectivity  
             Reply  Fri Feb 8 23:04:40 2013, Manasa, Update, Optics, G&H - AR Reflectivity  
          Reply  Sat Feb 9 19:34:34 2013, rana, Update, Optics, G&H - AR Reflectivity  
          Reply  Mon Feb 11 19:55:47 2013, Manasa, Update, Optics, G&H - AR Reflectivity  
             Reply  Wed Feb 13 09:28:56 2013, Steve, Update, Optics, G&H - HR plots 
Message ID: 8063     Entry time: Mon Feb 11 19:55:47 2013     In reply to: 8045     Reply to this: 8075
Author: Manasa 
Type: Update 
Category: Optics 
Subject: G&H - AR Reflectivity  

 

I adjusted the focal length of the focusing lens and reduced the beam size enough to mask with the razor blade edge while looking at the camera and then making measurements using PD.

I am still not satisfied with this data because the R of the HR surface measured after flipping seems totally unbelievable (at around 0.45).

G&H AR reflectivity

R percentage

11 ppm @4 deg
19.8 ppm @6 deg
20 ppm @ 8 deg
30 ppm @ 20 deg

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