摘要
介绍了四象限探测器的工作原理及影响四象限探测系统精度的各种内外部因素,详细分析了四象限探测器死区对探测范围内探测灵敏度的影响。在探测范围内,对各个象限内高斯光斑接收的光功率进行计算,并用Matlab软件对归一化的目标光斑偏移量x随光斑中心坐标X的变化关系进行仿真,设计四象限探测系统的光路和电路,当死区宽度D=0.1mm时,调整光斑半径R大小分别为0.6mm和0.4mm下进行测量。理论及实验结果表明,死区宽度相对光斑半径的比例越大,光斑偏移量随光斑中心的变化趋势越陡峭,探测器的灵敏度越高。
This paper introduces the principle of four-quadrant detector and the various factors influencing its detection sensitivity. The influence of dead zone on detection sensitivity is analyzed in detail. The deviation of spot is simulated with Matlab software. The experimental system, including the circuit part and optical part, is designed. Light intensity of each quadrant of the detector is detected by the circuit part. When the width of the dead zone is 0.1 mm, the deviation of spot is measured for the light spot radii of 0.6 mm and 0.4 mm, respectively. The experimental and theoretical results show that the detection sensitivity increases with the size ratio of dead zone to spot increasing.
出处
《激光与光电子学进展》
CSCD
北大核心
2013年第6期152-157,共6页
Laser & Optoelectronics Progress
基金
国家自然科学基金(61274012)
河南省科技厅攻关项目(122102210436
122102210435)
郑州轻工业学院校青年骨干教师培养计划(2011XGGJS004)
河南省高校科技创新团队项目(2012IRTSTHN013)
河南省创新型科技人才队伍建设工程
郑州市科技局科技攻关项目(121PPTGG362-4)
郑州轻工业学院博士科研基金资助课题
关键词
光学器件
四象限探测器
死区
高斯光斑
optical devices
four-quadrant detector
dead zone
Gaussian spot
