Enhanced frequency up-conversion in Rb vapor

被引:88
作者
Vernier, A. [1 ]
Franke-Arnold, S. [1 ]
Riis, E. [2 ]
Arnold, A. S. [2 ]
机构
[1] Univ Glasgow, Dept Phys & Astron, SUPA, Glasgow G12 8QQ, Lanark, Scotland
[2] Univ Strathclyde, Dept Phys, SUPA, Glasgow G4 0NG, Lanark, Scotland
来源
OPTICS EXPRESS | 2010年 / 18卷 / 16期
关键词
ELECTROMAGNETICALLY INDUCED TRANSPARENCY; 2-PHOTON SPECTROSCOPY; DIODE-LASER; RUBIDIUM; COHERENT; CESIUM; ATOMS;
D O I
10.1364/OE.18.017020
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We demonstrate highly efficient generation of coherent 420 nm light via up-conversion of near-infrared lasers in a hot rubidium vapor cell. By optimizing pump polarizations and frequencies we achieve a single-pass conversion efficiency of 260% per Watt, significantly higher than in previous experiments. A full exploration of the coherent light generation and fluorescence as a function of both pump frequencies reveals that coherent blue light is generated close to Rb-85 two-photon resonances, as predicted by theory, but at high vapor pressure is suppressed in spectral regions that do not support phase matching or exhibit single-photon Kerr refraction. Favorable scaling of our current 1 mW blue beam power with additional pump power is predicted. (C) 2010 Optical Society of America
引用
收藏
页码:17020 / 17026
页数:7
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