Semiconductor Optoelectronics, Volume. 41, Issue 4, 560(2020)

Design of Precise Temperature Control System for Saturated Absorption Frequency Stabilization of DFB Laser

ZHANG Wei, LI Zhaolong, GUO Ping, and ZHAO Jianye*
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  • [in Chinese]
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    Compared with the external cavity semiconductor laser, distributed feedback laser has a higher temperature regulation rate. In order to achieve saturated absorption frequency stabilization, it is necessary to control the laser temperature precisely. In this paper, the temperature control requirements of the saturated absorption frequency stabilization system is analyzed, a precise temperature control system is designed based on MAX1978 chip.The linear optimization of the temperature bridge circuit is realized by using constant current source, and the parameters of the analog PID circuit are quickly adjusted by using genetic algorithm. Finally the temperature control stability of 0.2mK is achieved, which is 1~2 orders of magnitude higher than that of the similar design. It solves the problem of obvious shaking of saturated absorption spectrum and has a broad application prospect.

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    ZHANG Wei, LI Zhaolong, GUO Ping, ZHAO Jianye. Design of Precise Temperature Control System for Saturated Absorption Frequency Stabilization of DFB Laser[J]. Semiconductor Optoelectronics, 2020, 41(4): 560

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    Paper Information

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    Received: Apr. 8, 2020

    Accepted: --

    Published Online: Aug. 18, 2020

    The Author Email: Jianye ZHAO (zhaojianye@pku.edu.cn)

    DOI:10.16818/j.issn1001-5868.2020.04.021

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