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physics.optics2026
Combined Cavity Alignment and Mode-Mismatch Sensing using RF-QPD Sensors
Mitchell Schiworski, Stefan Ballmer
In this article we describe a scheme for sensing both the mode mismatch and alignment of a cavity which does not require custom sensors and uses only Quadrant Photo-Detectors (QPDs…
physics.optics2024
Experimental demonstration of frequency downconverted arm length stabilization for a future upgraded gravitational wave detector
Satoshi Tanioka, Bin Wu, Stefan W. Ballmer
Ground-based laser interferometric gravitational wave detectors consist of complex multiple optical cavity systems. An arm-length stabilization (ALS) system has played an important…