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Length sensing and control

Grote, Hartmut ORCID: 2019. Length sensing and control. Grote, Hartmut, ed. Advanced Interferometric Gravitational-Wave Detectors, Vol. 5. 100 Years of General Relativity: Volume 5, [Advanced Interferometric Gravitational-Wave Detectors]. World Scientific, pp. 555-583. (10.1142/9789813146082_0020)

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Length sensing can be seen as the core objective of interferometry, aiming at an as precise as possible measurement of length and length fluctuations. For an interferometric gravitational-wave detector, the quantity containing gravitational-wave information is derived from an ultra-sensitive measurement of differential length fluctuations of the long arms. In this chapter we will describe methods to deduce length signals for advanced gravitational-wave detectors and discuss aspects of length control. We will further look at the non-trivial process of lock acquisition, as well as the readout of the gravitational-wave signal.

Item Type: Book Section
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Publisher: World Scientific
ISBN: 9789813146099
Last Modified: 26 Oct 2022 07:08

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