摘要
通过具体的地面模拟实验对应用在空间目标探测中的单光子探测器(SPAD)进行了定标。在空间目标探测中,考虑到与红外被动探测复用,所选取的SPAD的单光子雪崩二极管(APD)为InGaAs-APD;由于目标信息(比如距离)的不确定性,所使用的SPAD的外围抑制模式采用了主动抑制技术;对工作模式,雪崩电压,反偏电压和倍增因子,量子效率,暗计数,死时间几个方面进行了简单的介绍,建立了探测器响应接收能量的计数性能曲线,最后证实了其探测灵敏度是单光子水平的。结果表明,将目前广泛用于量子通信中的SPAD尝试用于空间目标探测中是具有可行性和有意义的。
The calibrating results of SPAD in single-photon detection for the space targets are presented from specific ground simulation experiments. In the detection for the space targets, considering passive infrared detection, InGaAs-APD is chosen as the critical component in SPAD. Due to the uncertainty of target information（such as distance）, the active depression mode is chosen. Some brief introductions are presented from the items of working mode, avalanche voltage, bias voltage, multiplication factor, quantum efficiency, dark count and dead time. The curve of the counting performance of SPAD in response to the receiving energy is established. Then the detection sensitivity is proved to be the level of single-photon. The results show that using SPAD for space targets detection is feasible and meaningful.
出处
《半导体光电》
CAS
CSCD
北大核心
2010年第2期328-332,共5页
Semiconductor Optoelectronics
关键词
定标
单光子探测
SPAD
计数性能
calibration
single-photon detection
SPAD
count performance
