Multi-spatial-mode effects in squeezed-light-enhanced interferometric gravitational wave detectors
Autor: | Töyrä, Daniel, Brown, Daniel D., Davis, McKenna, Song, Shicong, Wormald, Alex, Harms, Jan, Miao, Haixing, Freise, Andreas |
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Rok vydání: | 2017 |
Předmět: | |
Zdroj: | Phys. Rev. D 96, 022006 (2017) |
Druh dokumentu: | Working Paper |
DOI: | 10.1103/PhysRevD.96.022006 |
Popis: | Proposed near-future upgrades of the current advanced interferometric gravitational wave detectors include the usage of frequency dependent squeezed light to reduce the current sensitivity-limiting quantum noise. We quantify and describe the degradation effects that spatial mode-mismatches between optical resonators have on the squeezed field. These mode-mismatches can to first order be described by scattering of light into second-order Gaussian modes. As a demonstration of principle, we also show that squeezing the second-order Hermite-Gaussian modes $\mathrm{HG}_{02}$ and $\mathrm{HG}_{20}$, in addition to the fundamental mode, has the potential to increase the robustness to spatial mode-mismatches. This scheme, however, requires independently optimized squeeze angles for each squeezed spatial mode, which would be challenging to realise in practise. Comment: 10 pages, 12 figures |
Databáze: | arXiv |
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