Polarization interference in six-wave mixing in a Doppler-broadened N-type four-level system

被引：5
作者：
Niu, Jinyan [1 ]
Wang, Ruquan [1 ]
Wu, Ling-An [1 ]
Fu, Panming [1 ]
机构：
[1] Chinese Acad Sci, Lab Opt Phys, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2009年 / 26卷 / 12期
基金：
中国国家自然科学基金;
关键词：
ELECTROMAGNETICALLY INDUCED TRANSPARENCY; NONLINEAR OPTICS; PHOTONS;
D O I：
10.1364/JOSAB.26.002268
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In nonlinear atomic gaseous media the interference between independent macroscopic polarizations of different ensembles within the atomic velocity distribution can lead to anomalous behavior of the multiwave mixing spectra. For phase-conjugate six-wave mixing (SWM) in a Doppler-broadened N-type four-level system, it is found that the SWM spectrum can be either Doppler-free or very broad, depending on the directions of the incident beams and the ratios between the magnitudes of the wave vectors. This polarization interference can be controlled by the strong coupling field which, on the other hand, can induce Autler-Townes (AT) splitting when the SWM spectrum is Doppler-free. This technique may find special applications as an improved form of AT spectroscopy with higher resolution. (C) 2009 Optical Society of America
引用
收藏
页码：2268 / 2274
页数：7
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