Optomechanical instabilities in laser interferometer gravitational wave detectors

Jian Liu

doi:10.26182/5cdbb6c688229

Optomechanical instabilities in laser interferometer gravitational wave detectors

Jian Liu

Physics

Research output: Thesis › Doctoral Thesis

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Abstract

A laser interferometer gravitational wave detector stores about megawatts of optical power inside the cavities to improve the detector sensitivity. The strong coupling between the high intensity light field and the cavity mirror motions gives rise to optomechanical instabilities. This thesis investigates systematically these instabilities: the angular instability caused by the interaction between radiation pressure and the mirror angular control system, and the parametric instability due to the interaction between the cavity optical modes and the mirror internal modes fuelled by high optical power. All the works were carried out in Gingin High Optical Power Test Facility.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Zhao, Chunnong, Supervisor Ju, Li, Supervisor
Thesis sponsors	Australian Government Research Training Program
Award date	19 Mar 2019
DOIs	https://doi.org/10.26182/5cdbb6c688229
Publication status	Unpublished - 2019

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THESIS - DOCTOR OF PHILOSOPHY - LIU Jian - 2019 - Part 1
THESIS - DOCTOR OF PHILOSOPHY - LIU Jian - 2019 - Part 2
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title = "Optomechanical instabilities in laser interferometer gravitational wave detectors",

abstract = "A laser interferometer gravitational wave detector stores about megawatts of optical power inside the cavities to improve the detector sensitivity. The strong coupling between the high intensity light field and the cavity mirror motions gives rise to optomechanical instabilities. This thesis investigates systematically these instabilities: the angular instability caused by the interaction between radiation pressure and the mirror angular control system, and the parametric instability due to the interaction between the cavity optical modes and the mirror internal modes fuelled by high optical power. All the works were carried out in Gingin High Optical Power Test Facility. ",

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AB - A laser interferometer gravitational wave detector stores about megawatts of optical power inside the cavities to improve the detector sensitivity. The strong coupling between the high intensity light field and the cavity mirror motions gives rise to optomechanical instabilities. This thesis investigates systematically these instabilities: the angular instability caused by the interaction between radiation pressure and the mirror angular control system, and the parametric instability due to the interaction between the cavity optical modes and the mirror internal modes fuelled by high optical power. All the works were carried out in Gingin High Optical Power Test Facility.

KW - Gravitational wave

KW - Instabilities

KW - Interferometer

KW - High power laser

KW - Optomechanical interactions

U2 - 10.26182/5cdbb6c688229

DO - 10.26182/5cdbb6c688229

M3 - Doctoral Thesis

ER -

Optomechanical instabilities in laser interferometer gravitational wave detectors

Abstract

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