中国激光, 1987, 14 (3): 136, 网络出版: 2012-08-10
双光束共振耦合引起的折射率增强变化和喇曼感应自聚焦
Enhanced refractive-index change of medium by two-beam resonance-coupling
摘要
讨论了在波长不同的两单色激光束作用下,三次非线性光学介质折射率感应变化的共振增强特性。分别就双光子和频共振和双光子差频共振两种情况,导出了介质折射率非线性变化量的表示式;在实验上观察到由双光束差频喇曼共振作用导致的感应自聚焦现象,与理论结论相符合。
Abstract
Resonance enhanced refractive-index change induced by two incident beams of different frequencies is discussed. The expressions of the coupled nonlinear refractive-index change are given for the sum-frequency and difference-frequency two-photon resonance conditions. Some experimental results of calcite, fused quartz fibre and benzene samples are discussed briefly.
参考文献
[1] P. N. Butcher; Nonliner optical phenomena, 1965. J. Ducuing; Nonlinear optics, Ed. by P. G. Harper, B. fe. Wharxett, 1977，p. 11-46.
赫光生. 双光束共振耦合引起的折射率增强变化和喇曼感应自聚焦[J]. 中国激光, 1987, 14(3): 136. He Guangsheng. Enhanced refractive-index change of medium by two-beam resonance-coupling[J]. Chinese Journal of Lasers, 1987, 14(3): 136.
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