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Whispering gallery optical parametric oscillators

: Breunig, Ingo; Buse, Karsten


Razeghi, M. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Quantum Sensing and Nanophotonic Devices XI : San Francisco, California, United States, 2 - 6 February 2014
Bellingham, WA: SPIE, 2014 (Proceedings of SPIE 8993)
ISBN: 978-0-8194-9906-6
Paper 89930B
Conference "Quantum Sensing and Nanophotonic Devices" <11, 2014, San Francisco/Calif.>
Conference Paper
Fraunhofer IPM ()
near infrared; NIR; optical parametric oscillators; reflection

Whispering gallery optical parametric oscillators (WGR OPOs) are monolithic sources for tunable coherent and non-classical light. They are based on total internal reflection. Since reflection losses are negligible, their oscillation threshold can be far below one milliwatt. With sub-millimeter diameters, they are the most compact OPOs demonstrated so far. Recent experimental results demonstrate that WGR OPOs emit coherent light tunable over hundreds of nanometers. Operation in the visible as well as in the near-infrared has been demonstrated with up to 30 % conversion efficiency. These results indicate a great potential of WGR OPOs for spectroscopic and sensing applications.