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Entry  Mon Dec 20 19:55:11 2010, tara, DailyProgress, optic, rearraging optics for beat measurement 
    Reply  Thu Dec 23 22:41:28 2010, tara, DailyProgress, optic, rearraging optics for beat measurement 
       Reply  Sun Dec 26 02:42:47 2010, tara, DailyProgress, optic, rearraging optics for beat measurement 
          Reply  Mon Dec 27 02:51:33 2010, tara, DailyProgress, optic, rearraging optics for beat measurement beat_2010_12_27.png
Message ID: 437     Entry time: Mon Dec 20 19:55:11 2010     Reply to this: 440
Author: tara 
Type: DailyProgress 
Category: optic 
Subject: rearraging optics for beat measurement 

I designed the layout for optics behind the cavities for beat measurement, and calculated the mode matching for the beam.

Since the current optics height for beat is quite high (7 inches), we want to lower it to 3 inches, make it more symmetric, and more compact.

The PD's diameter is 300 mm, so the beam spot on it will be ~50um.

All the lenses I need are prepared.

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