{"title":"Length sensing and control","authors":"H. Grote","doi":"10.1142/9789813146082_0020","DOIUrl":null,"url":null,"abstract":"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.","PeriodicalId":183816,"journal":{"name":"Advanced Interferometric Gravitational-Wave Detectors","volume":"22 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Interferometric Gravitational-Wave Detectors","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1142/9789813146082_0020","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
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.