中文题名: | 激光干涉仪引力波探测器中参量不稳定问题及其抑制方法 |
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保密级别: | 公开 |
论文语种: | 中文 |
学科代码: | 070401 |
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学生类型: | 硕士 |
学位: | 理学硕士 |
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学位年度: | 2022 |
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提交日期: | 2022-06-24 |
答辩日期: | 2022-06-24 |
外文题名: | {Parametric Instabilities and the Mitigation Strategies in Interferometric Gravitation Wave Detectors |
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中文摘要: |
以及KAGRA对引力波的成功探测,具有更高灵敏度的第三代地面激光干涉仪引力波探测器的预研与建设已成为相关领域关注的焦点。散粒噪声是aLIGO等干涉引力波探测器中高频噪声的主要来源之一,可通过提高探测器中法布里-珀罗腔内激光功率来降低该项噪声的影响。但高腔内功率会来带的参量不稳定问题会严重影响探测器精度和运行时长。所以按照探测器设计参数提前进行参量不稳定的模拟以及相关抑制方案的制定,是保证探测器成功运行的重要一环。本文介绍了大功率长基线引力波探测器中参量不稳定的产生机制,并对参量不稳定理论发展与相关模拟进行了总结概括,并介绍了若干已在现有探测器中投入使用的参量不稳定的抑制办法,给出了已有的参量不稳定实验研究及相关结果。
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外文摘要: |
With the detection of gravitational waves by the network of aLIGO , aVirgo and KAGRA, the construction of laser interferometer gravitational wave detectors has proposed and become a popular research topic. Shot noise, one of the main sources of high-frequency noise in interferometric gravitational-wave detectors such as aLIGO, can be reduced by increasing the laser power in the Fabry-Perot cavityies of the detector. However, parametric instability, as one of the negative side effective of high intracavity power, will impair the accuracy and cavity control of the detector. This thesis introduces the mechanism of parametric instability in high-power long-baseline gravitational wave detectors, followed by a summary overview of the development of parametric instability theory and related simulations, and introduces several approaches to suppressing parametric instability and outlines experimental studies related to parametric instability.
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参考文献总数: | 41 |
馆藏号: | 硕070401/22012 |
开放日期: | 2023-06-24 |