Frequency stabilization of diode las

Frequency stabilization of diode laser to 1.637μm based on the methane absorption line

The frequency of an external-cavity diode laser has been stabilized to 1.637 μm by using the reference of absorption lines of methane.The method can be applied to wavelength division multiplexed optical communication,fiber-optic sensing systems,as well as the high-sensitivity detection of methane.The derivative-like error signal yielded by frequency modulation and phase sensitivity detection technology is inputted into the PI feedback loop circuit in order to stabilize the frequency to the line center.After stabilization,the frequency fluctuation of diode laser is held within 5.6 MHz,and the root of Allan variance of error signal reaches a minimum of 1.66×10-10 for an average time of 10 s.

作 者： 马维光 董磊 尹王保 李昌勇 贾锁堂   作者单位： College of Physics and Electronics Engineering,Shanxi University;State Key Laboratory of Quantum Optics and Quantum Optics Devices,Taiyuan 030006  刊 名： 中国光学快报（英文版）  ISTIC EI 英文刊名： CHINESE OPTICS LETTERS  年，卷(期)： 2004 2(8)  分类号： O43  关键词：  

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