Enhanced gain and narrow linewidth of an optical cavity by the Doppler effect in a four-level atomic system

被引：0

作者：

Peng, Yandong ^{[1
]}

Yang, Aihong ^{[1
]}

Zhang, Huiyun ^{[1
]}

Li, Peng ^{[1
]}

Jiang, Lin ^{[1
]}

Zhang, Luyin ^{[1
]}

机构：

[1] Shandong Univ Sci & Technol, Qingdao Key Lab Terahertz Technol, Sch Sci, Dept Phys, Qingdao 266590, Shandong, Peoples R China

来源：

JOURNAL OF MODERN OPTICS | 2013年 / 60卷 / 13期

基金：

中国国家自然科学基金;

关键词：

atomic coherence; quantum interference; active Raman gain; Doppler effect; dispersion; gain; ELECTROMAGNETICALLY INDUCED TRANSPARENCY; LIGHT;

D O I：

10.1080/09500340.2013.831498

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A scheme for high gain and narrow linewidth of an optical cavity with a four-level atomic system is proposed by the Doppler effect via active Raman gain (ARG) process. Atomic motion leads to Doppler frequency shift which induces constructive interference for the linear susceptibility. The enhanced normal dispersion greatly narrows the cavity linewidth, and the amplified gain gives rise to a high cavity transmission. Simulation results show that the cavity linewidth based on ARG is about one order of magnitude narrower than that based on electromagnetically-induced transparency under the same conditions, and the cavity transmission intensity could be enhanced by nearly 30 times.

引用

页码：1083 / 1089

页数：7

共 38 条

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