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Entry  Thu Mar 15 04:04:23 2012, Koji, Configuration, Locking, PRC Matching issues P3150910.jpgP3150902.jpgP3150906.jpgP3150907.jpgP3150900.jpg
    Reply  Thu Mar 22 17:35:59 2012, kiwamu, Update, Locking, mode profiles of the POP and POX beams : not bright enough 
Message ID: 6437     Entry time: Thu Mar 22 17:35:59 2012     In reply to: 6421
Author: kiwamu 
Type: Update 
Category: Locking 
Subject: mode profiles of the POP and POX beams : not bright enough 

I tried to measure the beam profiles at the POP and POX ports as Koji mentioned in his entry (#6421).

However it turned out that the beam powers were too small to be measured with our beam scan at those ports.

So I will move on to measurements at the REFL port as Rana suggested because the laser power is much larger than that of POP and POX.

(If the data of the POP and POX beam profiles turn out to be very necessary, we will do the razor blade technique with a more sensitive photo diode)

Quote from #6421

More precise analysis can be done with quantitative analysis of those two spots with Beamscan. This could happen tomorrow.


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