Naturally Phase-Matched Second-Harmonic Generation in a Whispering-Gallery-Mode Resonator

被引:245
作者
Fuerst, J. U. [1 ,2 ]
Strekalov, D. V. [1 ,3 ]
Elser, D. [1 ,2 ]
Lassen, M. [1 ,4 ]
Andersen, U. L. [1 ,4 ]
Marquardt, C. [1 ,2 ]
Leuchs, G. [1 ,2 ]
机构
[1] Max Planck Inst Sci Light, Erlangen, Germany
[2] Univ Erlangen Nurnberg, Dept Phys, D-8520 Erlangen, Germany
[3] CALTECH, Jet Prop Lab, Pasadena, CA USA
[4] Tech Univ Denmark, Dept Phys, Kongens Lyngby, Denmark
关键词
SUB-2ND HARMONIC-GENERATION; NONEQUILIBRIUM TRANSITIONS;
D O I
10.1103/PhysRevLett.104.153901
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
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 mu W in-coupled continuous wave pump power. The observed saturation pump power of 3.2 mW is almost 2 orders of magnitude lower than the state-of-the-art value. This suggests an application of our frequency doubler as a source of nonclassical 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.
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页数:4
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