高精度和高稳定性半导体激光器恒流驱动电源
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摘要
基于输入电流的微小变化可以引起半导体激光器输出波长和功率显著改变的特征,研制了一种高精度、高稳定性半导体激光器恒流驱动电源。该电源利用运算放大器和场效应管组成恒流源电路,消除了供电电源对输出电流特性的影响,使输出电流仅受调谐电压的变化而改变,提高了输出电流的稳定度;采用高精度基准电压源使调谐电压具有极高的输出精度和稳定度,增强了输出电流的精度;电源慢启动电路避免了浪涌及高压静电等对激光器的损坏,限流保护电路使流过激光器的正向电流不超过允许最大电流值,启停控制电路可根据实验需求随时关闭激光器而不影响电路的其他功能,实现了对激光器的可靠保护。测试结果表明,该电源在输出电流0～200 mA范围内连续可调,输出电流精度为0.01 mA,长期稳定度约为0.004%,具有恒流特性好、纹波小、保护电路可靠、抗干扰能力强、成本低、易实现等特点。
The output power and wavelength of semiconductor lasers are affected by the input current whose tiny change may lead to significant changes in the lasers' wavelength and optical power. In this paper, a high-accuracy and high-stability constant current power is developed. Field effect tube and operational amplifier are used to improve the stability of current, and high stability reference power is used to enhance the accuracy of current. High reliability is achieved by slow-start of power, current limiting protection and start-stop control circuit. The results show that this power supply is able to continuously adjust the output current from 0 mA to 200 mA, with a current accuracy of 0.01 mA and long-term stability of about 0.004%, and the protection circuit is highly reliable.
The output power and wavelength of semiconductor lasers are affected by the input current whose tiny change may lead to significant changes in the lasers' wavelength and optical power. In this paper, a high-accuracy and high-stability constant current power is developed. Field effect tube and operational amplifier are used to improve the stability of current, and high stability reference power is used to enhance the accuracy of current. High reliability is achieved by slow-start of power, current limiting protection and start-stop control circuit. The results show that this power supply is able to continuously adjust the output current from 0 mA to 200 mA, with a current accuracy of 0.01 mA and long-term stability of about 0.004%, and the protection circuit is highly reliable.
引文
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[8] 邓忠文, 刘志刚, 陶龙, 等. 新型可调谐外腔半导体激光器光频扫描干涉测距方法 [J]. 西安交通大学学报, 2013, 47(5): 104-109. DENG Zhongwen, LIU Zhigang, TAO Long, et al. Novel frequency scanned interferometry absolute distance measurement by tunable external-cavity diode laser [J]. Journal of Xi’an Jiaotong University, 2013, 47(5): 104-109.
[9] 步明繁, 刘志刚, 张为波, 等. 采用F-P光纤腔的外腔半导体激光器锁相稳频方法 [J]. 西安交通大学学报, 2016, 50(10): 125-131. BU Mingfan, LIU Zhigang, ZHANG Weibo, et al. Method of phase locking frequency stabilization for diode lasers by F-P cavity [J]. Journal of Xi’an Jiaotong University, 2016, 50(10): 125-131.
[10] 杨春莉, 贾宏志, 夏桂珍. 半导体激光器电源防浪涌电路的设计 [J]. 应用激光, 2008, 28(4): 310-313. YANG Chunli, JIA Hongzhi, XIA Guizhen. Design for the circuit to eliminate surge of the laser diode power supply [J]. Applied Laser, 2008, 28(4): 310-313.
[11] 王金定, 刘宏林, 王云才. 新型的半导体激光器保护电路 [J]. 应用激光, 2006, 26(2): 119-122. WANG Jinding, LIU Honglin, WANG Yuncai. Novel protective circuits of diode laser [J]. Applied Laser, 2006, 26(2): 119-122.
[12] 罗亮, 胡佳成. 高精度半导体激光器驱动电源及温控电路设计 [J]. 激光技术, 2017, 41(2): 200-204. LUO Liang, HU Jiacheng. Design of high-precision driving power and temperature control circuit for semiconductor laser [J]. Laser Technology, 2017, 41(2): 200-204.
[13] 蒋荣秋, 邓伟芬, 汪倩倩, 等. 用于红外气体检测的高稳定性DFB激光器驱动电源 [J]. 红外与激光工程, 2018, 47(5): 0505004. JIANG Rongqiu, DENG Weifen, WANG Qianqian, et al. High stability DFB laser driving power supply utilized in infrared gas detection [J]. Infrared and Laser Engineering, 2018, 47(5): 0505004.
[2] 谢建平, 王沛. 半导体激光器的波长调谐和波长稳定技术 [J]. 量子电子学报, 2002, 19(2): 97-103. XIE Jianping, WANG Pei. Wavelength tuning and stabilizing techniques of semiconductor lasers [J]. Chinese Journal of Quantum Electronics, 2002, 19(2): 97-103.
[3] 刘艳, 汪磊石. 波长可调谐取样光纤光栅激光器的输出特性研究 [J]. 物理学报, 2011, 60(2): 024207. LIU Yan, WANG Leishi. Output characteristics of wavelength tunable fiber lasers based on sampled Bragg gratings [J]. Acta Physica Sinica, 2011, 60(2): 024207.
[4] 李成仁, 宋昌烈, 李淑凤, 等. 半导体激光器输出波长随工作电流变化的实验研究 [J]. 红外与激光工程, 2003, 32(2): 144-147. LI Chengren, SONG Changlie, LI Shufeng, et al. Experimental investigation of the change of semiconductor laser output wavelength corresponding to operation current [J]. Infrared and Laser Engineering, 2003, 32(2): 144-147.
[5] 黄德修, 刘雪峰. 半导体激光器及其应用 [M]. 北京: 国防工业出版社, 1999: 255-263.
[6] 倪本来. 高稳定度电源 [M]. 北京: 人民邮电出版社, 1982: 7-8.
[7] 王均均. 相干光纤通信对半导体激光器光谱特性的要求 [J]. 光通信研究, 1985, 4: 25-35.
[8] 邓忠文, 刘志刚, 陶龙, 等. 新型可调谐外腔半导体激光器光频扫描干涉测距方法 [J]. 西安交通大学学报, 2013, 47(5): 104-109. DENG Zhongwen, LIU Zhigang, TAO Long, et al. Novel frequency scanned interferometry absolute distance measurement by tunable external-cavity diode laser [J]. Journal of Xi’an Jiaotong University, 2013, 47(5): 104-109.
[9] 步明繁, 刘志刚, 张为波, 等. 采用F-P光纤腔的外腔半导体激光器锁相稳频方法 [J]. 西安交通大学学报, 2016, 50(10): 125-131. BU Mingfan, LIU Zhigang, ZHANG Weibo, et al. Method of phase locking frequency stabilization for diode lasers by F-P cavity [J]. Journal of Xi’an Jiaotong University, 2016, 50(10): 125-131.
[10] 杨春莉, 贾宏志, 夏桂珍. 半导体激光器电源防浪涌电路的设计 [J]. 应用激光, 2008, 28(4): 310-313. YANG Chunli, JIA Hongzhi, XIA Guizhen. Design for the circuit to eliminate surge of the laser diode power supply [J]. Applied Laser, 2008, 28(4): 310-313.
[11] 王金定, 刘宏林, 王云才. 新型的半导体激光器保护电路 [J]. 应用激光, 2006, 26(2): 119-122. WANG Jinding, LIU Honglin, WANG Yuncai. Novel protective circuits of diode laser [J]. Applied Laser, 2006, 26(2): 119-122.
[12] 罗亮, 胡佳成. 高精度半导体激光器驱动电源及温控电路设计 [J]. 激光技术, 2017, 41(2): 200-204. LUO Liang, HU Jiacheng. Design of high-precision driving power and temperature control circuit for semiconductor laser [J]. Laser Technology, 2017, 41(2): 200-204.
[13] 蒋荣秋, 邓伟芬, 汪倩倩, 等. 用于红外气体检测的高稳定性DFB激光器驱动电源 [J]. 红外与激光工程, 2018, 47(5): 0505004. JIANG Rongqiu, DENG Weifen, WANG Qianqian, et al. High stability DFB laser driving power supply utilized in infrared gas detection [J]. Infrared and Laser Engineering, 2018, 47(5): 0505004.