Guided Lock of a Suspended Optical Cavity Enhanced by a Higher Order Extrapolation
Instrumentation and Detectors
2018-05-23 v1 Instrumentation and Methods for Astrophysics
General Relativity and Quantum Cosmology
Abstract
Lock acquisition of a suspended optical cavity can be a highly stochastic process and is therefore nontrivial. Guided lock is a method to make lock acquisition less stochastic by decelerating the motion of the cavity length based on an extrapolation of the motion from an instantaneous velocity measurement. We propose an improved scheme which is less susceptible to seismic disturbances by incorporating the acceleration as a higher order correction in the extrapolation. We implemented the new scheme in a 300-m suspended Fabry-Perot cavity and improved the success rate of lock acquisition by a factor of 30.
Keywords
Cite
@article{arxiv.1704.01645,
title = {Guided Lock of a Suspended Optical Cavity Enhanced by a Higher Order Extrapolation},
author = {Kiwamu Izumi and Koji Arai and Daisuke Tatsumi and Ryutaro Takahashi and Osamu Miyakawa and Masa-Katsu Fujimoto},
journal= {arXiv preprint arXiv:1704.01645},
year = {2018}
}