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Towards Ultrastable Amorphous Coatings for LIGO

Towards Ultrastable Amorphous Coatings for LIGO
LIGO 超稳定非晶涂层的研究
批准号:
1710957
负责人:
Carmen Menoni
金额:
$30.0万
依托单位:
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
2017
资助国家:
美国
项目状态:
已结题
起止时间:
2017-07-15 至 2020-06-30

项目摘要

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中文摘要
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英文摘要
The first detection of gravitational waves from the collision of two massive black holes by the twin Laser Interferometer Gravitational-wave Observatory (LIGO) detectors in Livingston, Louisiana, and Hanford, Washington in 2015 not only confirmed Einstein's predictions of the existence of gravitational waves but also ratified years of efforts in the development of gravitational wave detectors (GWD). Gravitational wave detectors are interferometers in which an intense laser beam bounces between two sets of mirrors in orthogonal arms. Gravitational waves cause differences in the path length of the laser beam between the two interferometer arms, giving rise to a distinct interference pattern that when analyzed identifies the event that created them. The detection sensitivity of GWD is determined by various noise sources, among which, thermal noise of the coatings in the mirrors of the interferometer is a main component. Thermal noise in the high reflectance amorphous oxide coatings in the interferometer's mirrors causes path length differences that can mask the signals from gravitational waves. To increase the sensitivity of present GWD and meet the demands of future GWD, a concerted effort to understand and control the mechanisms that give rise to thermal noise in amorphous oxide coatings is imperative. This work will form part of that effort. This award supports research aimed at demonstrating amorphous oxide coatings with significantly reduced thermal noise and superior optical properties that will enable an approximate 10x increase in sensitivity of state-of-the-art GWD. The research effort has two specific aims: 1) to realize amorphous metal oxide thin films by ion beam sputtering with reduced thermal noise through a systematic parametric study of the deposition conditions used to grow single films; and 2) to engineer multilayer dielectric coatings using these materials with reduced mechanical loss compared to state-of-the-art. A synergistic characterization effort will support the materials' growth. In particular the CSU researchers will collaborate with Caltech researchers to assess mechanical loss in single and multilayer dielectric coatings. This research will support the LIGO program in different ways. Through fundamental studies in amorphous oxides it will enable investigations of the physical mechanisms that come into play in affecting thermal noise. It will also offer the opportunity to seek for new coating designs that will increase sensitivity of advanced LIGO and of the next generation GWD. Synergistic collaborations with the LIGO Scientific Collaboration (LSC) Coatings Group are planned to congruently advance the fundamental material science and coatings engineering efforts.
期刊论文(3)
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科研奖励(0)
会议论文
DOI: 10.1103/physrevd.100.122004
发表时间: 2019
期刊: Physical Review D
影响因子: 5
作者: [Yang, Le, Randel, Emmett, Vajente, Gabriele, Ananyeva, Alena, Gustafson, Eric, Markosyan, Ashot, Bassiri, Riccardo, Fejer, Martin M., Menoni, Carmen S.]
通讯作者: Menoni, Carmen S.
DOI: 10.1364/ao.59.00a150
发表时间: 2020
期刊: Applied Optics
影响因子: 1.9
作者: [Yang, Le, Randel, Emmett, Vajente, Gabriele, Ananyeva, Alena, Gustafson, Eric, Markosyan, Ashot, Bassiri, Riccardo, Fejer, Martin, Menoni, Carmen]
通讯作者: Menoni, Carmen
Method for the experimental measurement of bulk and shear loss angles in amorphous thin films
非晶薄膜体积损失角和剪切损失角的实验测量方法
DOI: 10.1103/physrevd.101.042004
发表时间: 2020
期刊: Physical Review D
影响因子: 5
作者: [Vajente, Gabriele, Fazio, Mariana, Yang, Le, Gupta, Anchal, Ananyeva, Alena, Billinsley, Garilynn, Menoni, Carmen S.]
通讯作者: Menoni, Carmen S.
Collaborative Research: Center for Coatings Research
  • 批准号:
    2309297
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $21.03万
  • 财政年份:
    2023
  • 负责人:
    Carmen Menoni
  • 依托单位:
Coatings for Next Generation Gravitational Wave Interferometers
  • 批准号:
    2110101
  • 项目类别:
    Standard Grant
  • 资助金额:
    $44.99万
  • 财政年份:
    2021
  • 负责人:
    Carmen Menoni
  • 依托单位:
Collaborative Research: LSC Center for Coatings Research
  • 批准号:
    2012024
  • 项目类别:
    Standard Grant
  • 资助金额:
    $29.68万
  • 财政年份:
    2020
  • 负责人:
    Carmen Menoni
  • 依托单位:
Collaborative Research: LSC Center for Coatings Research
  • 批准号:
    1708010
  • 项目类别:
    Standard Grant
  • 资助金额:
    $27.88万
  • 财政年份:
    2017
  • 负责人:
    Carmen Menoni
  • 依托单位:
海外基金