ECR: Increase Transimpedance for OPO TRANS DCPD

Document #:

LIGO-E1800040-v1

Document type:

E - Engineering documents

Abstract:

The green light power in transmission of the OPO is ridiculously small, of the order 50nW, due to a mirror transmission coefficient that is only ~1 ppm. We propose to modify channel 1 of the Auxiliary Signals Concentrator 7 to be of the Baffle PD variant. This increases the maximum transimpedance gain from ~62 kOhm to 20 MOhm.

Files in Document:

• E1800040-v1.pdf (173.5 kB)

Other Files:

• E1800040-v1.docm (29.2 kB)

Topics:

• Squeezer

Authors:

• Daniel Sigg

Keywords:

ECR SQZ

Notes and Changes:

IIET: https://services.ligo-la.caltech.edu/FRS/show_bug.cgi?id=10017

Referenced by:

• LIGO-E1800254: aLIGO, SQZ, List of ECRs