期刊
PHYSICAL REVIEW LETTERS
卷 123, 期 17, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.123.173902
关键词
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资金
- National Key R&D Program of China [2016YFA0301302, 018YFB2200401]
- NSFC [11825402, 11654003, 61435001, 11527901]
- High-performance Computing Platform of Peking University
- ShanghaiTech University [2019F0201-000-03]
- China Postdoctoral Science Foundation [2018M640015]
We report enhanced optical nonlinear effects at the surface of an ultrahigh-Q silica microcavity functionalized by a thin layer of organic molecules. The maximal conversion efficiency of third harmonic generation reaches similar to 1680%/W-2 and an absolute efficiency of 0.0144% at pump power of similar to 2.90 mW, which is approximately 4 orders of magnitude higher than that in a reported silica microcavity. Further analysis clarifies the elusive dependence of the third harmonic signal on the pump power in previous literature. Molecule-functionalized microcavities may find promising applications in high-efficiency broadband optical frequency conversion and offer potential in sensitive surface analysis.
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