二极管泵浦1 064 nm单频Nd∶YAG激光器输出功率稳定控制系统设计

郑毅, 邢俊红, 焦明星, 王为梁

郑毅, 邢俊红, 焦明星, 王为梁. 二极管泵浦1 064 nm单频Nd∶YAG激光器输出功率稳定控制系统设计[J]. 应用光学, 2011, 32(4): 791-796.
引用本文: 郑毅, 邢俊红, 焦明星, 王为梁. 二极管泵浦1 064 nm单频Nd∶YAG激光器输出功率稳定控制系统设计[J]. 应用光学, 2011, 32(4): 791-796.
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ZHENG Yi, XING Jun-hong, JIAO Ming-xing, WANG Wei-liang. Control system for stabilizing output power of diode-pumped single-frequency Nd∶YAG laser at 1 064 nm[J]. Journal of Applied Optics, 2011, 32(4): 791-796.
Citation: ZHENG Yi, XING Jun-hong, JIAO Ming-xing, WANG Wei-liang. Control system for stabilizing output power of diode-pumped single-frequency Nd∶YAG laser at 1 064 nm[J]. Journal of Applied Optics, 2011, 32(4): 791-796.
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二极管泵浦1 064 nm单频Nd∶YAG激光器输出功率稳定控制系统设计

  • 西安理工大学机械与精密仪器工程学院精密仪器系,陕西西安 710048

详细信息
    通讯作者:

    郑毅（1971-），男，陕西西安人，讲师，博士研究生，主要从事激光光电测量与控制技术等方面的教学和研究工作。

  • 中图分类号: TN249

Control system for stabilizing output power of diode-pumped single-frequency Nd∶YAG laser at 1 064 nm

  • Department of Precision Instruments,Faculty of Mechanical and Precision Instrument Engineering,Xi-an University of Technology,Xi-an 710048,China

摘要

    摘要
  • 摘要: 介绍了激光二极管（LD）端面泵浦1 064 nm单频Nd∶YAG激光器的工作原理和结构特点，分析了影响这种固体激光器输出功率稳定性的主要因素，设计并实验研究了一种用于稳定该激光器输出功率的控制方案。该方案在严格控制LD和Nd∶YAG晶体工作温度的条件下，当单频Nd∶YAG激光器的输出功率波动时，根据LD输出功率与其注入电流成正比这一变化规律，利用获得的功率误差信号反馈控制LD的注入电流,即可稳定单频Nd∶YAG激光器的输出功率。实验结果表明：当LD泵浦1 064 nm单频Nd∶YAG激光器的输出功率约为11.5 mW时，采用所设计的控制系统，可使激光输出功率稳定性在130 min内优于1.3%。
    Abstract: The stability of laser output power is one of the important parameters to evaluate the laser performance. This paper introduced the operation principle and the structural features of a laser-diode (LD) end-pumped single-frequency Nd∶YAG laser at 1 064 nm , analyzed the main factors that affected the stability of the Nd∶YAG laser output power , proposed and experimentally studied a control scheme for stabilizing the Nd∶YAG laser output power. Since the output power of the Nd∶YAG laser was proportional to the LD-s injection current when the temperature of the LD and the Nd∶YAG crystal rod was stable, the control scheme strictly controlled the temperature of the LD and the Nd∶YAG crystal rod, and the LD-s injection current was adjusted through a negative feedback control system when the Nd∶YAG laser output power fluctuated. The experimental results indicated that when the output power of the LD-pumped single-frequency Nd∶YAG laser at 1 064 nm was about 11.5 mW, the laser output power stability was better than 1.3％ within 130 min using the designed control system.
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  • 刊出日期:  2011-07-14

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