Audio-band coating thermal noise measurement for Advanced LIGO with a multimode optical resonator
In modern high precision optical instruments, such as in gravitational wave detectors or frequency references, thermally induced fluctuations in the reflective coatings can be a limiting noise source. This noise, known as coating thermal noise, can be reduced by choosing materials with low mechanica...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2017
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| Online Access: | http://hdl.handle.net/1721.1/106973 https://orcid.org/0000-0002-8018-3278 https://orcid.org/0000-0001-8459-4499 |
| _version_ | 1826209688672272384 |
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| author | Gras, Slawomir Yu, H. Yam, William Martynov, Denis Evans, Matthew J |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Gras, Slawomir Yu, H. Yam, William Martynov, Denis Evans, Matthew J |
| author_sort | Gras, Slawomir |
| collection | MIT |
| description | In modern high precision optical instruments, such as in gravitational wave detectors or frequency references, thermally induced fluctuations in the reflective coatings can be a limiting noise source. This noise, known as coating thermal noise, can be reduced by choosing materials with low mechanical loss. Examination of new materials becomes a necessity in order to further minimize the coating thermal noise and thus improve sensitivity of next generation instruments. We present a novel approach to directly measure coating thermal noise using a high finesse folded cavity in which multiple Hermite-Gaussian modes coresonate. This method is used to probe surface fluctuations on the order 10[superscript -17] m√Hz in the frequency range 30–400 Hz. We applied this technique to measure thermal noise and loss angle of the coating used in Advanced LIGO. |
| first_indexed | 2024-09-23T14:27:15Z |
| format | Article |
| id | mit-1721.1/106973 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T14:27:15Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1069732022-09-29T09:31:16Z Audio-band coating thermal noise measurement for Advanced LIGO with a multimode optical resonator Gras, Slawomir Yu, H. Yam, William Martynov, Denis Evans, Matthew J Massachusetts Institute of Technology. Department of Physics MIT Kavli Institute for Astrophysics and Space Research Gras, Slawomir Yu, H. Yam, William Martynov, Denis Evans, Matthew J In modern high precision optical instruments, such as in gravitational wave detectors or frequency references, thermally induced fluctuations in the reflective coatings can be a limiting noise source. This noise, known as coating thermal noise, can be reduced by choosing materials with low mechanical loss. Examination of new materials becomes a necessity in order to further minimize the coating thermal noise and thus improve sensitivity of next generation instruments. We present a novel approach to directly measure coating thermal noise using a high finesse folded cavity in which multiple Hermite-Gaussian modes coresonate. This method is used to probe surface fluctuations on the order 10[superscript -17] m√Hz in the frequency range 30–400 Hz. We applied this technique to measure thermal noise and loss angle of the coating used in Advanced LIGO. National Science Foundation (U.S.) (Cooperative Agreement Grant PHY-0757058) 2017-02-16T19:33:26Z 2017-02-16T19:33:26Z 2017-01 2016-09 2017-01-10T23:00:08Z Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/106973 Gras, S. et al. “Audio-Band Coating Thermal Noise Measurement for Advanced LIGO with a Multimode Optical Resonator.” Physical Review D 95.2 (2017): n. pag. © 2017 American Physical Society https://orcid.org/0000-0002-8018-3278 https://orcid.org/0000-0001-8459-4499 en http://dx.doi.org/10.1103/PhysRevD.95.022001 Physical Review D Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Gras, Slawomir Yu, H. Yam, William Martynov, Denis Evans, Matthew J Audio-band coating thermal noise measurement for Advanced LIGO with a multimode optical resonator |
| title | Audio-band coating thermal noise measurement for Advanced LIGO with a multimode optical resonator |
| title_full | Audio-band coating thermal noise measurement for Advanced LIGO with a multimode optical resonator |
| title_fullStr | Audio-band coating thermal noise measurement for Advanced LIGO with a multimode optical resonator |
| title_full_unstemmed | Audio-band coating thermal noise measurement for Advanced LIGO with a multimode optical resonator |
| title_short | Audio-band coating thermal noise measurement for Advanced LIGO with a multimode optical resonator |
| title_sort | audio band coating thermal noise measurement for advanced ligo with a multimode optical resonator |
| url | http://hdl.handle.net/1721.1/106973 https://orcid.org/0000-0002-8018-3278 https://orcid.org/0000-0001-8459-4499 |
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