2009年3月
Comparison of three semiconductor laser systems for gravitational wave detection
OPTICAL ENGINEERING
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- 巻
- 48
- 号
- 3
- 開始ページ
- 034302
- 終了ページ
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1117/1.3089887
- 出版者・発行元
- SPIE-SOC PHOTOPTICAL INSTRUMENTATION ENGINEERS
The primary objective of the Decihertz Interferometer Gravitational Wave Observatory (DECIGO) mission is to detect and observe black holes' and galactic binaries' gravitational waves (GWs), at frequencies ranging from 10(-2) to 10(1) Hz (from 0.1 to 100 s in averaging time). This low-frequency range is inaccessible to ground-based interferometers, due to unshieldable background noise and to the fact that ground-based interferometers are limited to a few kilometers in length. Our research is focused on efforts to stabilize semiconductor, Nd:YAG, and fiber lasers, for use as GW detectors' optical sources. In present-day and future detectors, frequency and phase noise may place certain limitations on sensitivity and stability. Our goal is primarily to design robust experiments. In this report, we compare existing methods: Faraday, Faraday peak, and saturated absorption spectroscopy. In these, the laser frequency is stabilized to Rb as an atomic frequency reference by a feedback-loop control system. From the frequency stability of these models, we can predict the characteristics of the three systems through dynamic stability analysis, by analyzing the dynamic Allan variance. We find the optical frequency stability, expressed as the Allan deviation (the square root of the Allan variance), to be 3.3 x 10(-11), 2.9 x 10(-12), and 1.2 x 10(-12) in the respective methods. (C) 2009 Society of Photo-Optical Instrumentation Engineers. [DOI: 10.1117/1.3089887]
- リンク情報
- ID情報
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- DOI : 10.1117/1.3089887
- ISSN : 0091-3286
- Web of Science ID : WOS:000265641300016