Coherent optical wavelength conversion via cavity optomechanics
2012; Nature Portfolio; Volume: 3; Issue: 1 Linguagem: Inglês
10.1038/ncomms2201
ISSN2041-1723
AutoresJeff T. Hill, Amir H. Safavi-Naeini, Jasper Fuk‐Woo Chan, Oskar Painter,
Tópico(s)Advanced Fiber Laser Technologies
ResumoWe theoretically propose and experimentally demonstrate coherent wavelength conversion of optical photons using photon-phonon translation in a cavity-optomechanical system. For an engineered silicon optomechanical crystal nanocavity supporting a 4 GHz localized phonon mode, optical signals in a 1.5 MHz bandwidth are coherently converted over a 11.2 THz frequency span between one cavity mode at wavelength 1460 nm and a second cavity mode at 1545 nm with a 93% internal (2% external) peak efficiency. The thermal and quantum limiting noise involved in the conversion process is also analyzed, and in terms of an equivalent photon number signal level are found to correspond to an internal noise level of only 6 and 4x10-3 quanta, respectively.
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