Reducing Coating Thermal Noise in Gravitational Wave Detectors
降低引力波探测器中的涂层热噪声
基本信息
- 批准号:1205481
- 负责人:
- 金额:$ 16.5万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2012
- 资助国家:美国
- 起止时间:2012-06-15 至 2015-05-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Direct detection of gravitational waves has been a major challenge in gravity and astrophysics research for nearly 50 years. Successful detection of gravitational waves is expected to provide insight and information on neutron stars, supernova explosions, black holes, and the earliest moments after the Big Bang that is not available to electromagnetic telescopes. It will also provide an experimental test of Einstein's General Theory of Relativity which can help determine if there are missing elements to our understanding of gravity and cosmology. The detection of astronomical gravitational waves requires extremely precise optical measurements. Coating thermal noise in the optics is a limiting noise source in the most sensitive frequency band of second generation gravitational wave detectors. This project is on the study and improvement of coating thermal noise through novel measurements of the mechanical loss in optical coating materials. Measuring two sources of dissipation (from bulk and torsional motion) in coating materials can give valuable information for low thermal noise coating design as well as insights into the causes of thermal noise in coating materials.Improvements in coating thermal noise will have applications beyond gravitational wave detection. Frequency stabilization, quantum mechanics experiments, and other precision optics applications are encountering the same coating thermal noise limitation as gravitational wave detection. Some of these have commercial and industrial applications, especially frequency stabilization and precision timing. In addition, this proposal helps to develop an experimental physics program at American University that will include undergraduate researchers. This will help expose American students (many of whom aspire to careers in public policy) to experimental science and cutting edge research.
近50年来,引力波的直接探测一直是引力和天体物理学研究中的一个重大挑战。 引力波的成功探测有望提供关于中子星、超新星爆炸、黑洞和大爆炸后最早时刻的洞察力和信息,这是电磁望远镜无法获得的。 它还将为爱因斯坦的广义相对论提供实验测试,这可以帮助确定我们对引力和宇宙学的理解是否存在缺失的元素。 天文引力波的探测需要极其精确的光学测量。光学系统中的涂层热噪声是第二代引力波探测器最敏感频段的限制噪声源。 本计画系透过光学镀膜材料之机械损失之新颖量测方法,来研究及改善镀膜热杂讯。测量涂层材料中的两种耗散源(体运动和扭转运动)可以为低热噪声涂层设计提供有价值的信息,并深入了解涂层材料中热噪声的原因。涂层热噪声的改善将具有超越引力波探测的应用。频率稳定、量子力学实验和其他精密光学应用都遇到了与引力波探测相同的涂层热噪声限制。其中一些具有商业和工业应用,特别是频率稳定和精确定时。此外,这项建议有助于在美国大学开发一个实验物理项目,其中包括本科研究人员。这将有助于美国学生(其中许多人渴望在公共政策的职业生涯)接触实验科学和前沿研究。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Gregory Harry其他文献
Gregory Harry的其他文献
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{{ truncateString('Gregory Harry', 18)}}的其他基金
Collaborative Research: Center for Coatings Research
合作研究:涂料研究中心
- 批准号:
2309293 - 财政年份:2023
- 资助金额:
$ 16.5万 - 项目类别:
Continuing Grant
Aluminum Gallium Arsenide Coatings to Improve LIGO Sensitivity
砷化铝镓涂层可提高 LIGO 灵敏度
- 批准号:
2012017 - 财政年份:2020
- 资助金额:
$ 16.5万 - 项目类别:
Continuing Grant
Collaborative Research: LSC Center for Coatings Research
合作研究:LSC 涂料研究中心
- 批准号:
2011787 - 财政年份:2020
- 资助金额:
$ 16.5万 - 项目类别:
Standard Grant
Collaborative Research: LSC Center for Coatings Research
合作研究:LSC 涂料研究中心
- 批准号:
1707920 - 财政年份:2017
- 资助金额:
$ 16.5万 - 项目类别:
Standard Grant
CAREER: Integrated Research and Education on Gravitational Wave Detector Optics
职业:引力波探测器光学的综合研究和教育
- 批准号:
1453252 - 财政年份:2015
- 资助金额:
$ 16.5万 - 项目类别:
Continuing Grant
Workshop on the Effect of Electric Charge on Sensitivity in Gravitation Experiments
电荷对引力实验灵敏度影响研讨会
- 批准号:
0741401 - 财政年份:2007
- 资助金额:
$ 16.5万 - 项目类别:
Standard Grant
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