Angular control of optical cavities in a radiation-pressure-dominated regime: the Enhanced LIGO case
We describe the angular sensing and control (ASC) of 4 km detectors of the Laser Interferometer Gravitational-Wave Observatory (LIGO). Enhanced LIGO, the culmination of the first generation LIGO detectors, operated between 2009 and 2010 with about 40 kW of laser power in the arm cavities. In this re...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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Optical Society of America
2014
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| Online Access: | http://hdl.handle.net/1721.1/88410 https://orcid.org/0000-0001-8459-4499 https://orcid.org/0000-0003-1983-3187 |
| _version_ | 1826212206277033984 |
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| author | Dooley, K. L. Barsotti, Lisa Adhikari, Rana X. Fricke, T. T. Frolov, V. V. Kawabe, Keita Evans, Matthew J Fritschel, Peter K Smith, Nicolas de Mateo |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Dooley, K. L. Barsotti, Lisa Adhikari, Rana X. Fricke, T. T. Frolov, V. V. Kawabe, Keita Evans, Matthew J Fritschel, Peter K Smith, Nicolas de Mateo |
| author_sort | Dooley, K. L. |
| collection | MIT |
| description | We describe the angular sensing and control (ASC) of 4 km detectors of the Laser Interferometer Gravitational-Wave Observatory (LIGO). Enhanced LIGO, the culmination of the first generation LIGO detectors, operated between 2009 and 2010 with about 40 kW of laser power in the arm cavities. In this regime, radiation-pressure effects are significant and induce instabilities in the angular opto-mechanical transfer functions. Here we present and motivate the ASC design in this extreme case and present the results of its implementation in Enhanced LIGO. Highlights of the ASC performance are successful control of opto-mechanical torsional modes, relative mirror motions of ≤ 1 × 10[superscript −7] rad rms, and limited impact on in-band strain sensitivity. |
| first_indexed | 2024-09-23T15:18:02Z |
| format | Article |
| id | mit-1721.1/88410 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:18:02Z |
| publishDate | 2014 |
| publisher | Optical Society of America |
| record_format | dspace |
| spelling | mit-1721.1/884102022-09-29T14:01:51Z Angular control of optical cavities in a radiation-pressure-dominated regime: the Enhanced LIGO case Dooley, K. L. Barsotti, Lisa Adhikari, Rana X. Fricke, T. T. Frolov, V. V. Kawabe, Keita Evans, Matthew J Fritschel, Peter K Smith, Nicolas de Mateo Massachusetts Institute of Technology. Department of Physics MIT Kavli Institute for Astrophysics and Space Research Barsotti, Lisa Evans, Matthew J. Fritschel, Peter K. Smith-Lefebvre, Nicolas We describe the angular sensing and control (ASC) of 4 km detectors of the Laser Interferometer Gravitational-Wave Observatory (LIGO). Enhanced LIGO, the culmination of the first generation LIGO detectors, operated between 2009 and 2010 with about 40 kW of laser power in the arm cavities. In this regime, radiation-pressure effects are significant and induce instabilities in the angular opto-mechanical transfer functions. Here we present and motivate the ASC design in this extreme case and present the results of its implementation in Enhanced LIGO. Highlights of the ASC performance are successful control of opto-mechanical torsional modes, relative mirror motions of ≤ 1 × 10[superscript −7] rad rms, and limited impact on in-band strain sensitivity. 2014-07-15T13:09:36Z 2014-07-15T13:09:36Z 2013-11 2013-09 Article http://purl.org/eprint/type/JournalArticle 1084-7529 1520-8532 http://hdl.handle.net/1721.1/88410 Dooley, Katherine L., Lisa Barsotti, Rana X. Adhikari, Matthew Evans, Tobin T. Fricke, Peter Fritschel, Valera Frolov, Keita Kawabe, and Nicolas Smith-Lefebvre. “Angular Control of Optical Cavities in a Radiation-Pressure-Dominated Regime: The Enhanced LIGO Case.” Journal of the Optical Society of America A 30, no. 12 (December 1, 2013): 2618. https://orcid.org/0000-0001-8459-4499 https://orcid.org/0000-0003-1983-3187 en_US http://dx.doi.org/10.1364/josaa.30.002618 Journal of the Optical Society of America A Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Optical Society of America arXiv |
| spellingShingle | Dooley, K. L. Barsotti, Lisa Adhikari, Rana X. Fricke, T. T. Frolov, V. V. Kawabe, Keita Evans, Matthew J Fritschel, Peter K Smith, Nicolas de Mateo Angular control of optical cavities in a radiation-pressure-dominated regime: the Enhanced LIGO case |
| title | Angular control of optical cavities in a radiation-pressure-dominated regime: the Enhanced LIGO case |
| title_full | Angular control of optical cavities in a radiation-pressure-dominated regime: the Enhanced LIGO case |
| title_fullStr | Angular control of optical cavities in a radiation-pressure-dominated regime: the Enhanced LIGO case |
| title_full_unstemmed | Angular control of optical cavities in a radiation-pressure-dominated regime: the Enhanced LIGO case |
| title_short | Angular control of optical cavities in a radiation-pressure-dominated regime: the Enhanced LIGO case |
| title_sort | angular control of optical cavities in a radiation pressure dominated regime the enhanced ligo case |
| url | http://hdl.handle.net/1721.1/88410 https://orcid.org/0000-0001-8459-4499 https://orcid.org/0000-0003-1983-3187 |
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