Barriga, Pablo and Bhawal, Biplab and Ju, Li and Blair, David G. (2007) Numerical calculations of diffraction losses in advanced interferometric gravitational wave detectors. Journal of the Optical Society of America A, 24 (6). pp. 1731-1741. ISSN 1084-7529 http://resolver.caltech.edu/CaltechAUTHORS:BARjosaa07
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Knowledge of the diffraction losses in higher-order modes of large optical cavities is essential for predicting three-mode parametric photon-phonon scattering, which can lead to mechanical instabilities in long-baseline gravitational wave detectors. We explore different numerical methods in order to determine the diffraction losses of the higher-order optical modes. Diffraction losses not only affect the power buildup inside the cavity but also influence the shape and frequency of the mode, which ultimately affect the parametric instability gain. Results depend on both the optical mode shape (order) and the mirror diameter. We also present a physical interpretation of these results.
|Additional Information:||© 2007 Optical Society of America Received October 3, 2006; accepted November 29, 2006; posted December 18, 2006 (Doc. ID 75705); published May 9, 2007 The authors thank Erika D’Ambrosio, Bill Kells, and Hiro Yamamoto for useful discussions. Also thanks to Jérôme Degallaix for his help in developing the FFT code at UWA and to Juri Agresti for his eigenvalue calculations. David G. Blair and Li Ju thank the LIGO Laboratory for its hospitality. Biplab Bhawal is supported by National Science Foundation under cooperative agreement PHY-0107417. This work was supported by the Australian Research Council and is part of the research program of the Australian Consortium for Interferometric Gravitational Astronomy.|
|Official Citation:||P. Barriga, B. Bhawal, L. Ju, and D. G. Blair, "Numerical calculations of diffraction losses in advanced interferometric gravitational wave detectors," J. Opt. Soc. Am. A 24, 1731-1741 (2007) http://www.opticsinfobase.org/abstract.cfm?URI=josaa-24-6-1731|
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|Deposited On:||14 Aug 2007|
|Last Modified:||26 Dec 2012 09:39|
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