A compact and rugged tunable external cavity diode laser with Littman-Metcalf configuration

被引：0

作者：

Wei, Fang ^{[1
,2
]}

Chen, Dijun ^{[1
]}

Xin, Guofeng ^{[1
]}

Sun, Yanguang ^{[1
,2
]}

Fang, Zujie ^{[1
]}

Cai, Haiwen ^{[1
]}

Qu, Ronghui ^{[1
]}

机构：

[1] Shanghai Key Laboratory of All Solid-State Laser and Applied Techniques, Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

[2] University of Chinese Academy of Sciences, Beijing 100049, China

来源：

Zhongguo Jiguang/Chinese Journal of Lasers | 2013年 / 40卷 / 11期

关键词：

Frequency stability - Hinges - Laser resonators - Semiconductor lasers;

D O I：

10.3788/CJL201340.1102012

中图分类号：

学科分类号：

摘要：

An external cavity diode laser (ECDL) with Littman-Metcalf configuration is constructed in this paper. The ECDL adopts a compact structure with a star-flexure hinge as the tuning mechanism. Its mechanical characteristics and design are analyzed and optimized by finite element calculations. The first order resonance frequency of tuning arm is measured as 3.7 kHz. The laser cavity structure parameters are designed according to the mode-hop-free tuning condition, and the performance of the ECDL is obviously improved, showing single-mode operation with mode-hopping free tuning range over 80 GHz at 780 nm. The device has been operating stably without realignment for more than one year, indicating its good ruggedness. The frequency of ECDL can be locked at 87Rb (F=2→F′=2, 3) transitions. The linewidth of 200 kHz and temperature stability of 35 MHz/°C are measured, and the Allen deviation reaches 3.5×10-11 in 3-s integration time. Its output power is continuously monitored with fluctuation below 0.75% for 24 h, showing with good stability.

引用

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