Comparison of arm cavity optical losses for the two wavelengths of the Einstein Telescope gravitational wave detector
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arXiv
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| Autores principales: | , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866912037008834560 |
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| author | Jean, Maxime Le Degallaix, Jerome Hofman, David Pinard, Laurent Forest, Danièle Granata, Massimo Michel, Christophe Steinlechner, Jessica Amra, Claude Lequime, Michel Zerrad, Myriam |
| author_facet | Jean, Maxime Le Degallaix, Jerome Hofman, David Pinard, Laurent Forest, Danièle Granata, Massimo Michel, Christophe Steinlechner, Jessica Amra, Claude Lequime, Michel Zerrad, Myriam |
| contents | A new generation of gravitational wave detectors is currently being designed with the likely use of a different laser wavelength compared to current instruments. The estimation of the optical losses for this new wavelength is particularly relevant to derive the detector sensitivity and also to anticipate the optical performances of future instruments. In this article, we measured the absorption and angle-resolved scattering of several mirror samples in order to compare optical losses at a wavelength of 1064 and 1550\ nm. In addition, we have carried out simulations of the Einstein Telescope arm cavities at 1064 and 1550\ nm taking into account losses due to surface low-spatial frequency flatness. Our results suggest that optical losses as measured at 1064\ nm are about twice as large as those at 1550\ nm as predicted with a simple model. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_13357 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Comparison of arm cavity optical losses for the two wavelengths of the Einstein Telescope gravitational wave detector Jean, Maxime Le Degallaix, Jerome Hofman, David Pinard, Laurent Forest, Danièle Granata, Massimo Michel, Christophe Steinlechner, Jessica Amra, Claude Lequime, Michel Zerrad, Myriam Optics A new generation of gravitational wave detectors is currently being designed with the likely use of a different laser wavelength compared to current instruments. The estimation of the optical losses for this new wavelength is particularly relevant to derive the detector sensitivity and also to anticipate the optical performances of future instruments. In this article, we measured the absorption and angle-resolved scattering of several mirror samples in order to compare optical losses at a wavelength of 1064 and 1550\ nm. In addition, we have carried out simulations of the Einstein Telescope arm cavities at 1064 and 1550\ nm taking into account losses due to surface low-spatial frequency flatness. Our results suggest that optical losses as measured at 1064\ nm are about twice as large as those at 1550\ nm as predicted with a simple model. |
| title | Comparison of arm cavity optical losses for the two wavelengths of the Einstein Telescope gravitational wave detector |
| topic | Optics |
| url | https://arxiv.org/abs/2409.13357 |