PIN四象限探测器输出特性的改进研究

Improvement on Output Properties of PIN Four-quadrant Detectors

摘要:

PIN四象限探测器在应用过程中对其输出一致性的要求很高。文章讨论了影响PIN四象限探测器输出一致性的各种因素，并有针对性地提出了相应的改进措施。通过仿真分析，对PIN器件的各项参数进行了优化设计，并制作出了可工作在1060nm波长50V偏压下的PIN四象限探测器，其每个象限响应度达到0.3A/W，暗电流小于50nA，四个象限输出不一致性小于10%。然后通过对单个芯片的四个象限分别进行放大电路的安装调试，制作出了输出不一致性小于3%的四象限探测器器件。

Abstract:

Various factors which affect the consistency of the output characteristics of PIN four-quadrant detectors are discussed, and the corresponding methods are proposed. With simulation analysis, the design parameters are optimized, and the detectors working at 1060nm wavelength under 50V bias are fabricated.The response of 0.3A/W and dark current less than 50nA are obtained for each quadrant of the PIN detectors. The output difference of the four quadrants is less than 10% for the detector chip. Then by making installation and debugging of the amplifying circuit for each quadrant, the four-quadrant detectors with the output difference less than 3% are fabricated.