Directional infrared emission resulting from cascade population inversion and four-wave mixing in Rb vapor

被引：53

作者：

Akulshin, Alexander ^{[1
]}

Budker, Dmitry ^{[2
]}

McLean, Russell ^{[1
]}

机构：

[1] Swinburne Univ Technol, Ctr Atom Opt & Ultrafast Spect, Hawthorn, Vic 3122, Australia

[2] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

来源：

OPTICS LETTERS | 2014年 / 39卷 / 04期

关键词：

FREQUENCY-UP-CONVERSION; BLUE; COHERENT; RUBIDIUM;

D O I：

10.1364/OL.39.000845

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Directional infrared emission at 1.37 and 5.23 mu m is generated in Rb vapors that are stepwise excited by low-power cw resonant light. The radiation at 5.23 mu m originating from amplified spontaneous emission on the 5D(5/2) -> 6P(3/2) transition and wave mixing consists of forward- and backward-directed components with distinctive spectral and spatial properties. Diffraction-limited light at 1.37 mu m generated in the copropagating direction only is a product of parametric wave mixing around the 5P(3/2) -> 5D(5/2) -> 6P(3/2) -> 6S(1/2) -> 5P(3/2) transition loop. This highly nondegenerate mixing process involves one externally applied and two internally generated optical fields. Similarities between wave mixing generated blue and 1.37 mu m light are demonstrated. c 2014 Optical Society of America

引用

页码：845 / 848

页数：4

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