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arXiv 1107.2891physics.optics
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LiNbO3回音壁模式圆盘谐振腔中二阶超喇曼效应的观测

Observation of second-order hyper-Raman generation in LiNbO3 whispering-gallery mode disk resonators

Matt T. Simons, Irina Novikova

备注：
3 pages, 4 figures
发表信息：
Optics Letters 36, 3027 (2011)
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摘要：

在这篇手稿中，我们报告的实验演示的非线性频率转换在几个光学频率的回音壁模式谐振器（WGMR）。由于WGMR内部非线性相互作用的增强，1064 nm泵浦场与LiNbO 3盘的相互作用在室温（低于相位匹配温度> 100 ℃）下产生了弱的但可测量的非相位匹配的532 nm二次谐波场，泵浦功率为几十mW。对于更高的泵浦功率，我们观察到在545 nm，559 nm，573 nm和587 nm处产生四个额外的场。两个连续场之间的相对光谱位移对应于LiNbO 3晶体中455 cm^-1的振动模式。我们的初步分析表明，这些领域是一个多声子的超拉曼散射的结果，其中两个光子的泵浦场转换成一个光子的较高的频率场和一个或几个光学声子。

英文摘要：

In this manuscript we report experimental demonstration of nonlinear frequency conversion at several optical frequencies in a whispering-gallery mode resonator (WGMR). Due to the enhancement of nonlinear interactions inside a WGMR, interaction of a 1064 nm pump field with a LiNbO3 disk produced a weak, but measurable non-phase matched 532 nm second harmonic field at room temperature (>100C below the phase-matching temperature), for pump powers of a few tens of mW. For higher pump powers, we observed the generation of four additional fields at 545 nm, 559 nm, 573 nm, and 587 nm. The relative spectral shift between two consecutive fields corresponds to a 455 cm^-1 vibrational mode in LiNbO3 crystal. Our preliminary analysis indicates that these fields are the result of a multi-phonon hyper-Raman scattering, in which two photons of the pump field are converted into one photon of a higher-frequency field and one or several optical phonons.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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