LIGO Document T1300130-v3

Longitudinal-to-Angle Coupling in Optical Levers

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T - Technical notes
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This document shows how the geometrical coupling from longitudinal motion of a sensed reflector results in misinterpretation as angular deviations of the reflector.
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Notes and Changes:
Calculation now agrees with (and hopefully more clearly explains) what's done in E1200836.

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