Thermal tuning the optical cavity for 3 mode interaction studies using a CO sub(2) laser
Three mode interactions could induce parametric instability in advanced gravitational wave detectors with high optical power circulating in the cavities. One of the conditions for parametric instability to occur is when the cavity frequency difference between fundamental mode and the high order mode...
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| Veröffentlicht in: | Journal of physics. Conference series 2012-01, Vol.363, p.1-6 |
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| container_title | Journal of physics. Conference series |
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| creator | Susmithan, Sunil Zhao, Chunnong Qi, Fang Ju, Li Blair, David |
| description | Three mode interactions could induce parametric instability in advanced gravitational wave detectors with high optical power circulating in the cavities. One of the conditions for parametric instability to occur is when the cavity frequency difference between fundamental mode and the high order mode matches the test mass acoustic mode frequency. The optical mode spacing is a function of cavity g-factor (radius of curvature). At the Gingin High Optical Power Facility, we have an 80 meter optical cavity particularly designed for studying high optical power effects in advanced gravitational wave detectors such as parametric instabilities. Here we present the recent results of thermal tuning the cavity g-factor by heating the test mass surface with a CO sub(2) laser to investigate the 3-mode interactions. Observation of test mass thermal noise peaks above 160 kHz enhanced by 3 mode interaction is presented. |
| doi_str_mv | 10.1088/1742-6596/363/1/012018 |
| format | Article |
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One of the conditions for parametric instability to occur is when the cavity frequency difference between fundamental mode and the high order mode matches the test mass acoustic mode frequency. The optical mode spacing is a function of cavity g-factor (radius of curvature). At the Gingin High Optical Power Facility, we have an 80 meter optical cavity particularly designed for studying high optical power effects in advanced gravitational wave detectors such as parametric instabilities. Here we present the recent results of thermal tuning the cavity g-factor by heating the test mass surface with a CO sub(2) laser to investigate the 3-mode interactions. Observation of test mass thermal noise peaks above 160 kHz enhanced by 3 mode interaction is presented.</description><identifier>ISSN: 1742-6588</identifier><identifier>EISSN: 1742-6596</identifier><identifier>DOI: 10.1088/1742-6596/363/1/012018</identifier><language>eng</language><subject>Carbon dioxide lasers ; Circulating ; Detectors ; Gravitational waves ; Holes ; Instability ; Stability ; Tuning</subject><ispartof>Journal of physics. 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One of the conditions for parametric instability to occur is when the cavity frequency difference between fundamental mode and the high order mode matches the test mass acoustic mode frequency. The optical mode spacing is a function of cavity g-factor (radius of curvature). At the Gingin High Optical Power Facility, we have an 80 meter optical cavity particularly designed for studying high optical power effects in advanced gravitational wave detectors such as parametric instabilities. Here we present the recent results of thermal tuning the cavity g-factor by heating the test mass surface with a CO sub(2) laser to investigate the 3-mode interactions. Observation of test mass thermal noise peaks above 160 kHz enhanced by 3 mode interaction is presented.</description><subject>Carbon dioxide lasers</subject><subject>Circulating</subject><subject>Detectors</subject><subject>Gravitational waves</subject><subject>Holes</subject><subject>Instability</subject><subject>Stability</subject><subject>Tuning</subject><issn>1742-6588</issn><issn>1742-6596</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNqVizFvwjAUhK2qSNDSv4DeGAaIHZPEzBGoGwsDG3KTl2Lk2NTPrtR_D0iIvbfc6bs7xmaCLwVXKhf1qlhU5brKZSVzkXNRcKFe2ORZvD6zUmP2RnTmXN5UT9hhf8IwaAsxOeO-IZ4Q_CWa9oZa_WviH_Q-gITBdwjGRQy6jcY7oJg6gwSJ7j8NzQ4ofWXFHKwmDFM26rUl_Hj4O8u2m33zubgE_5OQ4nEw1KK12qFPdBR1KUupimot_zG9AuhrTE0</recordid><startdate>20120101</startdate><enddate>20120101</enddate><creator>Susmithan, Sunil</creator><creator>Zhao, Chunnong</creator><creator>Qi, Fang</creator><creator>Ju, Li</creator><creator>Blair, David</creator><scope>7SP</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>H8D</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20120101</creationdate><title>Thermal tuning the optical cavity for 3 mode interaction studies using a CO sub(2) laser</title><author>Susmithan, Sunil ; Zhao, Chunnong ; Qi, Fang ; Ju, Li ; Blair, David</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-proquest_miscellaneous_17535382693</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Carbon dioxide lasers</topic><topic>Circulating</topic><topic>Detectors</topic><topic>Gravitational waves</topic><topic>Holes</topic><topic>Instability</topic><topic>Stability</topic><topic>Tuning</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Susmithan, Sunil</creatorcontrib><creatorcontrib>Zhao, Chunnong</creatorcontrib><creatorcontrib>Qi, Fang</creatorcontrib><creatorcontrib>Ju, Li</creatorcontrib><creatorcontrib>Blair, David</creatorcontrib><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of physics. Conference series</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Susmithan, Sunil</au><au>Zhao, Chunnong</au><au>Qi, Fang</au><au>Ju, Li</au><au>Blair, David</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Thermal tuning the optical cavity for 3 mode interaction studies using a CO sub(2) laser</atitle><jtitle>Journal of physics. Conference series</jtitle><date>2012-01-01</date><risdate>2012</risdate><volume>363</volume><spage>1</spage><epage>6</epage><pages>1-6</pages><issn>1742-6588</issn><eissn>1742-6596</eissn><abstract>Three mode interactions could induce parametric instability in advanced gravitational wave detectors with high optical power circulating in the cavities. One of the conditions for parametric instability to occur is when the cavity frequency difference between fundamental mode and the high order mode matches the test mass acoustic mode frequency. The optical mode spacing is a function of cavity g-factor (radius of curvature). At the Gingin High Optical Power Facility, we have an 80 meter optical cavity particularly designed for studying high optical power effects in advanced gravitational wave detectors such as parametric instabilities. Here we present the recent results of thermal tuning the cavity g-factor by heating the test mass surface with a CO sub(2) laser to investigate the 3-mode interactions. Observation of test mass thermal noise peaks above 160 kHz enhanced by 3 mode interaction is presented.</abstract><doi>10.1088/1742-6596/363/1/012018</doi></addata></record> |
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| ispartof | Journal of physics. Conference series, 2012-01, Vol.363, p.1-6 |
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| source | Institute of Physics IOPscience extra; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Institute of Physics Open Access Journal Titles; Alma/SFX Local Collection; Free Full-Text Journals in Chemistry |
| subjects | Carbon dioxide lasers Circulating Detectors Gravitational waves Holes Instability Stability Tuning |
| title | Thermal tuning the optical cavity for 3 mode interaction studies using a CO sub(2) laser |
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