Simple high-sensitivity interferometric position sensor for test mass control on an advanced LIGO interferometer

Malcolm B. Gray; David E. McClelland; Mark Barton; Seiji Kawamura

doi:10.1023/a:1006991717589

Simple high-sensitivity interferometric position sensor for test mass control on an advanced LIGO interferometer

Malcolm B. Gray, David E. McClelland, Mark Barton, Seiji Kawamura

Research output: Contribution to journal › Conference article › peer-review

16 Citations (Scopus)

Abstract

A small Michelson interferometer has been configured as a tracking mirror displacement sensor in order to achieve both large dynamic range (2.1 mm) and excellent sensitivity (2×10^-14 m/√Hz) across a broad frequency range (6 Hz-3 kHz). The interferometer is illuminated by a simple LED, uses broadband, non-polarizing beamsplitters and contains no lensing optics. A DC-coupled balanced detector provides an error signal that is used to position the tracking mirror of the Michelson interferometer so as to maintain an interferometer operating position close to the centre of a particular fringe. The total interferometric sensor provides a small, simple and cost-effective means of achieving high-resolution displacement measurements.

Original language	English
Pages (from-to)	571-582
Number of pages	12
Journal	Optical and Quantum Electronics
Volume	31
Issue number	5
DOIs	https://doi.org/10.1023/a:1006991717589
Publication status	Published - 1999
Event	Proceedings of the 1997 11th Australian Optical Society Conference - Adelaide, SA, Aust Duration: 10 Sept 1997 → 12 Sept 1997

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title = "Simple high-sensitivity interferometric position sensor for test mass control on an advanced LIGO interferometer",

abstract = "A small Michelson interferometer has been configured as a tracking mirror displacement sensor in order to achieve both large dynamic range (2.1 mm) and excellent sensitivity (2×10-14 m/√Hz) across a broad frequency range (6 Hz-3 kHz). The interferometer is illuminated by a simple LED, uses broadband, non-polarizing beamsplitters and contains no lensing optics. A DC-coupled balanced detector provides an error signal that is used to position the tracking mirror of the Michelson interferometer so as to maintain an interferometer operating position close to the centre of a particular fringe. The total interferometric sensor provides a small, simple and cost-effective means of achieving high-resolution displacement measurements.",

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AU - Gray, Malcolm B.

AU - McClelland, David E.

AU - Barton, Mark

AU - Kawamura, Seiji

PY - 1999

Y1 - 1999

N2 - A small Michelson interferometer has been configured as a tracking mirror displacement sensor in order to achieve both large dynamic range (2.1 mm) and excellent sensitivity (2×10-14 m/√Hz) across a broad frequency range (6 Hz-3 kHz). The interferometer is illuminated by a simple LED, uses broadband, non-polarizing beamsplitters and contains no lensing optics. A DC-coupled balanced detector provides an error signal that is used to position the tracking mirror of the Michelson interferometer so as to maintain an interferometer operating position close to the centre of a particular fringe. The total interferometric sensor provides a small, simple and cost-effective means of achieving high-resolution displacement measurements.

AB - A small Michelson interferometer has been configured as a tracking mirror displacement sensor in order to achieve both large dynamic range (2.1 mm) and excellent sensitivity (2×10-14 m/√Hz) across a broad frequency range (6 Hz-3 kHz). The interferometer is illuminated by a simple LED, uses broadband, non-polarizing beamsplitters and contains no lensing optics. A DC-coupled balanced detector provides an error signal that is used to position the tracking mirror of the Michelson interferometer so as to maintain an interferometer operating position close to the centre of a particular fringe. The total interferometric sensor provides a small, simple and cost-effective means of achieving high-resolution displacement measurements.

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M3 - Conference article

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SP - 571

EP - 582

JO - Optical and Quantum Electronics

JF - Optical and Quantum Electronics

IS - 5

T2 - Proceedings of the 1997 11th Australian Optical Society Conference

Y2 - 10 September 1997 through 12 September 1997

ER -

Simple high-sensitivity interferometric position sensor for test mass control on an advanced LIGO interferometer

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