BS, CP, RM, ITM and ETM Wedge Angle Tolerance

Document #:

LIGO-T080277-v1

Document type:

T - Technical notes

Abstract:

This technical note establishes the maximum and minimum wedge angles for the Advanced LIGO BS, CP, RM, ITM, and ETM in the folded and non-folded interferometers. The BS wedge angle is specified as 0.05 -0.00/+0.03 deg horizontal. A 5 deg clocking error of the BS wedge from the horizontal plane is acceptable. The CP wedge angle is specified as 0.04 - 0.03/+ 0.04 deg horizontal. The RM wedge angle is specified as 0.04 -0.03/+ 0.04 deg vertical, thick side up. The ITM and ETM wedge angles are specified as 0.07 -0.00/+0.03 deg vertical, thick side down.

Files in Document:

• T080277-03_BS-CP-RM-ITM-ETM_wedge-angle_tolerance.pdf (369.6 kB)

Topics:

• Core Optics

Authors:

• Michael Smith

Keywords:

COC wedge-angle

Notes and Changes:

v1 is equivalent to 03.