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AOS (Beam Reducing Telescopes)
tomotada.akutsu - 21:59 Tuesday 03 April 2018 (4621) Print this report
On the PR2 optical bench

Hasegawa, Akutsu

Have put a half-wave plate (Tholabs WPH10M-532) on an optical bench next to the PR2 chamber. It has been located between a periscope to launch the green beam and a viewport window throught which the beam enters the chamber. We expected some count up of the QPD signals at TMSY green, but not so much. Anyway it somehow increased.

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