Angular instability due to radiation pressure in the LIGO gravitational-wave detector

Eiichi Hirose; Keita Kawabe; Daniel Sigg; Rana Adhikari; Peter R. Saulson

doi:10.1364/AO.49.003474

Angular instability due to radiation pressure in the LIGO gravitational-wave detector

Eiichi Hirose, Keita Kawabe, Daniel Sigg, Rana Adhikari, Peter R. Saulson

Department of Physics

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

Abstract

We observed the effect of radiation pressure on the angular sensing and control system of the Laser Interferometer Gravitational-Wave Observatory (LIGO) interferometer's core optics at LIGO Hanford Observatory. This is the first measurement of this effect in a complete gravitational-wave interferometer. Only one of the two angular modes survives with feedback control, because the other mode is suppressed when the control gain is sufficiently large. We developed a mathematical model to understand the physics of the system. This model matches well with the dynamics that we observe.

Original language	English (US)
Pages (from-to)	3474-3484
Number of pages	11
Journal	Applied Optics
Volume	49
Issue number	18
DOIs	https://doi.org/10.1364/AO.49.003474
State	Published - Jun 20 2010

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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10.1364/AO.49.003474

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abstract = "We observed the effect of radiation pressure on the angular sensing and control system of the Laser Interferometer Gravitational-Wave Observatory (LIGO) interferometer's core optics at LIGO Hanford Observatory. This is the first measurement of this effect in a complete gravitational-wave interferometer. Only one of the two angular modes survives with feedback control, because the other mode is suppressed when the control gain is sufficiently large. We developed a mathematical model to understand the physics of the system. This model matches well with the dynamics that we observe.",

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AU - Hirose, Eiichi

AU - Kawabe, Keita

AU - Sigg, Daniel

AU - Adhikari, Rana

AU - Saulson, Peter R.

PY - 2010/6/20

Y1 - 2010/6/20

N2 - We observed the effect of radiation pressure on the angular sensing and control system of the Laser Interferometer Gravitational-Wave Observatory (LIGO) interferometer's core optics at LIGO Hanford Observatory. This is the first measurement of this effect in a complete gravitational-wave interferometer. Only one of the two angular modes survives with feedback control, because the other mode is suppressed when the control gain is sufficiently large. We developed a mathematical model to understand the physics of the system. This model matches well with the dynamics that we observe.

AB - We observed the effect of radiation pressure on the angular sensing and control system of the Laser Interferometer Gravitational-Wave Observatory (LIGO) interferometer's core optics at LIGO Hanford Observatory. This is the first measurement of this effect in a complete gravitational-wave interferometer. Only one of the two angular modes survives with feedback control, because the other mode is suppressed when the control gain is sufficiently large. We developed a mathematical model to understand the physics of the system. This model matches well with the dynamics that we observe.

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Angular instability due to radiation pressure in the LIGO gravitational-wave detector

Abstract

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