Frequency characteristics of collimated blue light generated by four-wave mixing in cesium vapor

被引：1
|
作者：
Yang, Baodong [1 ,2 ,3 ,4 ]
Xu, Jing [1 ]
Fan, Jian [1 ]
Zhou, Haitao [1 ]
机构：
[1] Shanxi Univ, Coll Phys & Elect Engn, Taiyuan 030006, Peoples R China
[2] Shanxi Univ, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China
[3] Shanxi Univ, Inst Optoelect, Taiyuan 030006, Peoples R China
[4] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China
来源：
OPTICS LETTERS | 2024年 / 49卷 / 14期
基金：
中国国家自然科学基金;
关键词：
UP-CONVERSION; 2-PHOTON EXCITATION;
D O I：
10.1364/OL.525940
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The frequency evaluation of collimated blue light (CBL) generated by parametric four-wave mixing (FWM) in hot atomic vapor is presented. The cesium (Cs-133) atoms are excited from the 6S(1/2) ground state to 8S(1/2) excited state with the 852 and 795 nm pump lasers, producing an optical field at 4.2 mu m through an amplified spontaneous emission via population inversion on the 8S(1/2 )-> 7P(3/2) transition and the 456 nm CBL via FWM on the 7P(3/2 )-> 6S(1/2) transition. The frequency shift of 456 nm CBL has been measured by velocity-selective optical pumping spectral technique when the frequency of any one of two pumping lasers is tuned. The ratio of the frequency shift of 456 nm CBL to the two-photon frequency detuning of two pumping lasers is 0.8912, implying that the generated 4.2 mu m light frequency is also correspondingly shifted. (c) 2024 Optica Publishing Group
引用
收藏
页码：3846 / 3849
页数：4
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