Longitudinal-to-Angle Coupling in Optical Levers

Document #:

LIGO-T1300130-v3

Document type:

T - Technical notes

Abstract:

This document shows how the geometrical coupling from longitudinal motion of a sensed reflector results in misinterpretation as angular deviations of the reflector.

Files in Document:

• LIGO-T1300130.pdf (OpticalLever_LongitudinalCoupling_T1300130-v3.pdf, 84.4 kB)

Other Files:

• OpticalLever_LongitudinalCoupling_T1300130-v3.graffle (121.4 kB)

Topics:

• Auxiliary Optics
• Modelling

Authors:

• Thomas Vo
• Jeffrey Kissel
• Eric Black

Notes and Changes:

Calculation now agrees with (and hopefully more clearly explains) what's done in E1200836.

Related Documents:

• LIGO-E1200836: aLIGO Optical Lever Longitudinal-to-Angle Coupling Coefficients

Referenced by:

• LIGO-E1200836-v1: aLIGO Optical Lever Longitudinal-to-Angle Coupling Coefficients