Reports 1-1 of 1 Clear search Modify search
MIF (General)
kazuya.yokogawa - 23:16 Wednesday 08 August 2018 (5758) Print this report
Installation of ALS system

[Izumi, Matteo, Sugimoto, Yokogawa]

IR path from the Prometheus laser

We put IR optics for X-arm.

  • Transmittance of the Faraday Isolator was about 94% (Input:399.2mW, Trans:375.2mW).
  • I forgot to place HWP in front of the Faraday Isolator in my layout design, so we must buy additional HWP for 1064nm (x2).
  • I forgot to place beam dumps for the Faraday Isolator in my layout design, so we must buy additional beam dumps.

The optical fiber for 532nm

  • The coupling rate of the fiber was 63% yesterday, but it reached only 46% (Input:24.8mW, output:11.3mW).
  • The beam power after the EOM was about 25mW today. (I remember it was about 70mW yesterday.)

There are the following possible cause.

  1. Mode match to the fiber is not good. (I tried to tune the position of L4 but there was no improvement.)
  2. misalignment of the AOM and theEOM

MEMO

We moved the Prometheus laser from the POP table to PSL

Images attached to this report
Search Help
×

Warning

×