Physics – Optics
Scientific paper
2009-12-19
Phys. Rev. Lett. 104, 153901 (2010)
Physics
Optics
Scientific paper
10.1103/PhysRevLett.104.153901
We demonstrate for the first time natural phase matching for optical frequency doubling in a high-Q whispering gallery mode resonator made of Lithium Niobate. A conversion efficiency of 9% is achieved at 30 micro Watt in-coupled continuous wave pump power. The observed saturation pump power of 3.2 mW is almost two orders of magnitude lower than the state-of-the-art. This suggests an application of our frequency doubler as a source of non-classical light requiring only a low-power pump, which easily can be quantum noise limited. Our theoretical analysis of the three-wave mixing in a whispering gallery mode resonator provides the relative conversion efficiencies for frequency doubling in various modes.
Andersen Ulrik L.
Elser Dominique
Fürst J. U.
Lassen Mikael
Leuchs Gerd
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