Developing low noise coatings for GW detectors, using next generation techniques such as ECR ion-beam deposition, and plasma-assisted deposition.

使用 ECR 离子束沉积和等离子体辅助沉积等下一代技术，开发用于 GW 探测器的低噪声涂层。

基本信息

批准号：
1785610
负责人：
金额：
--
依托单位：
University of Strathclyde
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2016
资助国家：
英国
起止时间：
2016 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-1785610
关键词：
Developing low noise coatings GW

项目摘要

On 14th September 2015, Advanced LIGO announced the first direct detection of gravitational waves, from two black holes colliding. This announcement was heralded by many people as the "scientific breakthrough of the century", and opens up an entirely new way to observe the Universe. UWS is a full member of the LIGO Scientific Collaboration, and plays a key role within the international community in relation to developing laser mirror technology for future detector upgrades. This project is supported through the STFC (UK) funding within this area of astroparticle research, and will thus be focussed on developing low noise coatings for GW detectors, using next generation techniques such as ECR ion-beam deposition, and plasma-assisted deposition. Thermal noise arising from the mechanical dissipation in the mirror coatings is expected to set an important limit to the sensitivity of all future gravitational wave detectors. UWS has recently demonstrated the ability to fabricate novel amorphous silicon films that exhibit low levels of mechanical and optical losses. This project will focus on the development of multilayer HR coatings using this novel technology, such as silicon/silica and silicon/alumina, and evaluate these for use within upgrades to Advanced LIGO in addition to future observatories such as the Einstein Telescope. Numerous spin-out applications will also be considered, such as ultra-low optical loss infrared filters for environmental monitoring applications.

2015 年 9 月 14 日，高级 LIGO 宣布首次直接探测到两个黑洞碰撞产生的引力波。这一消息被许多人誉为“本世纪的科学突破”，开辟了观察宇宙的全新方式。 UWS 是 LIGO 科学合作组织的正式成员，在国际社会中为未来探测器升级开发激光镜技术方面发挥着关键作用。该项目得到了 STFC（英国）在天体粒子研究领域的资助，因此将专注于使用 ECR 离子束沉积和等离子体辅助沉积等下一代技术，开发用于引力波探测器的低噪声涂层。镜面涂层中的机械耗散产生的热噪声预计将对所有未来引力波探测器的灵敏度设置重要限制。 UWS 最近展示了制造新型非晶硅薄膜的能力，该薄膜具有较低的机械和光学损耗。该项目将重点开发使用这种新技术的多层 HR 涂层，例如硅/二氧化硅和硅/氧化铝，并评估这些涂层在先进 LIGO 以及爱因斯坦望远镜等未来天文台升级中的使用情况。还将考虑许多衍生应用，例如用于环境监测应用的超低光损耗红外滤光片。

项目成果

期刊论文数量（7）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Effect of elevated substrate temperature deposition on the mechanical losses in tantala thin film coatings

高温沉积对氧化钽薄膜涂层机械损失的影响

DOI：
10.1088/1361-6382/aaad7c
发表时间：
2018
期刊：
Classical and Quantum Gravity
影响因子：
3.5
作者：
Vajente, G;Birney, R;Ananyeva, A;Angelova, S;Asselin, R;Baloukas, B;Bassiri, R;Billingsley, G;Fejer, M M;Gibson, D
通讯作者：
Gibson, D

GW170608: Observation of a 19 Solar-mass Binary Black Hole Coalescence