第18卷
第10期
2010年10月
文章编号
1004-924X(2010)10-216407
光学精密工程
Optics and Precision Engineering
的特性测试
四象限探测器自
：赵馨，首峰，姜会林
（长春理工大学，吉林长春130022）
Vol.18No.10
Oct.2010
摘要：研究了用四象限探测器检测光斑中心位置时，人射光班的各种特性和外部环境对象限探测器输出产生的影响。通过理论推导得出了入射橘圆高斯光斑时光现中心位置与操测器输出的关系公式及检测灵敏度公式；搭建实验系统完成了室内及野外测试实验。实验结果表明，室内环境下探测器具有较高的检测精度与细分能力；在极限灵敏度下通过数字
试实验。野外实验表明，光强闪烁对探测器影响很大，当大气折射率结构常数为10-1时，距离在830m时器件仅具有7
细分能力，距离在12.5km时基本没有细分能力，已经无法进行光班检测，关键调：四象限探测器；辨圆高斯光斑光强闪炼；细分能力
中图分类号：TP212.14;TN366
文献标识码：A
doi;10, 3788/OPE, 20101810, 2164
Experimentaltestingoncharacteristicsoffour-quadrantdetector
ZHAO Xin,TONG Shou-fengJIANGHui-lin
(ChangchunUniversityof ScienceandTechnology,Changchun130022,China)
Abstract: The basic characteristics of incident spots and effects of external space environments on a four-quadrant detector were researched when it was used to detect the spot center. The formulae of the output and sensitivity of the detector were proposed when the incident spots showed an elliptical Gaussian-distribution. An experimental system was set up to test and verify the characteristics of the quadrant detector in an indoor test and a field test. Experimental results demonstrate that the detector has higher detection accuracy and subdivision in the indoor test, and can offer a 36-subdivision with digital filtering at a limited sensitivity. By the voltage characteristic curves, the background lights, spot sizes and the ratio of signal to noise were studied. The experiments in the field were also comple ted between the two spots of 830 m and 12. 5 km. It is pointed out that the influence of irradiance scintillation on the detector is rigider than that of the indoor test. When the refractive index structure parameter is 1o1s, the subdivision is only 7 in a distance of 83o m, furthermore, it can not detect spots in 12.5km for the subdivision is invalid.
Key words: four-quadrant detector; elliptical Gaussian -distributed spot; irradiance scintillation; sub
division
收稿日期：2009-10-15；修订日期：2010-01-18，
基金项目：国家自然科学基金资助项目（No,60677009）；吉林省白然科学基金资助项目（No.20070527）；吉林省教
有厅十一五”规划资助项目（No，2007294）；国家863高技术研究发展计划资助项目（No. 2003AA712014)