光学学报, 2017, 37 (7): 0719002, 网络出版: 2017-07-10
原子相干引起的五阶非线性增强
Enhancement of Fifth-Order Nonlinearity Induced by Atomic Coherence
非线性光学 原子相干 电磁诱导透明 非线性系数 腔透射谱法 nonlinear optics atomic coherence electromagnetically induced transparency nonlinear coefficient cavity transmission spectroscopy
摘要
采用腔透射谱法测量了Λ型三能级系统的五阶克尔非线性系数。对二能级和Λ型三能级系统的五阶非线性系数进行数值模拟,比较发现,原子相干对非线性系数具有增强作用。同时将三阶和五阶极化率的模拟结果与测量结果进行对比,发现两者具有很好的一致性。
Abstract
The fifth-order Kerr nonlinear coefficient of Λ-type three-level system is measured using cavity transmission spectroscopy. The fifth-order nonlinear coefficients for two-level and Λ-type three-level systems are numerically simulated. Comparing the results of numerical simulation, it is found that atomic coherence has an enhanced effect on nonlinear coefficients. Meanwhile, the simulation results of the third- and fifth-order polarizabilities are compared with the measured results, and it is found that the two results have good consistency.
刘羽桐, 钮月萍, 林功伟, 龚尚庆. 原子相干引起的五阶非线性增强[J]. 光学学报, 2017, 37(7): 0719002. Liu Yutong, Niu Yueping, Lin Gongwei, Gong Shangqing. Enhancement of Fifth-Order Nonlinearity Induced by Atomic Coherence[J]. Acta Optica Sinica, 2017, 37(7): 0719002.