Observation of three-mode parametric interactions in long optical cavities

C. Zhao, L. Ju, Y. Fan, S. Gras, B. J. J. Slagmolen, H. Miao, P. Barriga, D. G. Blair, D. J. Hosken, A. F. Brooks, P. J. Veitch, D. Mudge, and J. Munch
Phys. Rev. A 78, 023807 – Published 6 August 2008

Abstract

We report the observation of three-mode optoacoustic parametric interactions of the type predicted to cause parametric instabilities in a 77m-long, high-optical-power cavity that uses suspended sapphire mirrors. Resonant interaction occurs between two distinct optical modes and an acoustic mode of one mirror when the difference in frequency between the two optical cavity modes is close to the frequency of the acoustic mode. Experimental results validate the theory of parametric instability in high-power optical cavities, and demonstrate tunable parametric gain 102 and more than 20dB amplification of a high-order optical mode power generated by an applied acoustic signal.

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  • Received 17 December 2007

DOI:https://doi.org/10.1103/PhysRevA.78.023807

©2008 American Physical Society

Authors & Affiliations

C. Zhao*, L. Ju, Y. Fan, S. Gras, B. J. J. Slagmolen, H. Miao, P. Barriga, and D. G. Blair

  • School of Physics, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Australia

D. J. Hosken, A. F. Brooks, P. J. Veitch, D. Mudge, and J. Munch

  • Department of Physics, The University of Adelaide, Adelaide, South Australia, 5005 Australia

  • *zhao@physics.uwa.edu.au
  • Present address: Centre for Gravitational Physics, The Australian National University, Canberra, 0200, Australia
  • Present address: LIGO, California Institute of Technology, Pasadena, CA, USA.

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Issue

Vol. 78, Iss. 2 — August 2008

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