Measuring saturable nonlinearity in atomic vapor via direct spatial mapping

Author:

Wu Juan,Jia Pengbo1,Wang Sandan2,Wang Xuewen2,Yuan Jinpeng2ORCID,Wang Lirong2ORCID,Hu Yi,Chen ZhigangORCID,Xu Jingjun

Affiliation:

1. Henan Normal University

2. Shanxi University

Abstract

We demonstrate a scheme to measure the saturable nonlinearity of atomic vapor by mapping its nonlinear response function onto a light beam profile. Our analysis shows that a part of a nonlinear optical solution solved in a model governing the nonlinear beam dynamics in atomic vapor can be used to perform this measurement, even in the presence of large absorption. A desired beam profile is achieved by an evolution of a well-known structured beam, namely the Airy beam. Using this simple yet effective method, we retrieve the saturable nonlinear response function of rubidium (Rb) atomic vapor in experiment, and employ it in light propagation simulation that reproduces well observed nonlinear dynamics, which nevertheless cannot be fitted in a strong nonlinear regime with an ideal Kerr approximation. Our method is applicable to a broad spectrum of materials featured with saturable nonlinearities.

Funder

National Natural Science Foundation of China

111 Project

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Semiclassical calculation of the power saturation of the Kerr effect in Rb vapor;Journal of the Optical Society of America B;2023-11-16

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