Prochazka Ivan, Bimbova Roberta, Kodet Jan, Blazej Josef, Eckl Johann
Czech Technical University in Prague, Brehova 7, 115 19 Prague, Czech Republic.
Federal Agency for Cartography and Geodesy, Fundamentalstation Wettzell, 93444 Kötzting, Germany.
Rev Sci Instrum. 2020 May 1;91(5):056102. doi: 10.1063/5.0006516.
Satellite Laser Ranging (SLR) is a well established space geodetic technique measuring the satellite distance, which implements time of flight. Up to now, second harmonic Nd:YAG laser pulses have been frequently used for range measurement, since the silicon detector technology allows us to detect single photon echoes reflected from satellites with required high detection probability, millimeter precision, and an acceptable dark count rate. On the other hand, the fundamental wavelength (1064 nm) provides a significantly better overall energy budget, but there were no suitable detectors available. More recently, the use of InGaAs/InP became feasible for developing single photon avalanche diodes, which exhibit high photon detection probability and acceptable timing resolution. Both these properties are important and allow the SLR measurement at the fundamental wavelength. In this Note, we report on construction and testing of a single photon detector package based on the InGaAs/InP diode optimized for the SLR measurement.
卫星激光测距（SLR）是一种成熟的空间大地测量技术，用于测量卫星距离，它采用飞行时间测量法。到目前为止，二次谐波钕钇铝石榴石激光脉冲经常用于距离测量，因为硅探测器技术使我们能够以所需的高探测概率、毫米级精度和可接受的暗计数率探测从卫星反射回来的单光子回波。另一方面，基波波长（1064纳米）提供了显著更好的整体能量预算，但没有合适的探测器可用。最近，使用铟镓砷/磷化铟来开发单光子雪崩二极管变得可行，这种二极管具有高光子探测概率和可接受的时间分辨率。这两个特性都很重要，使得能够在基波波长下进行卫星激光测距测量。在本报告中，我们报告了一种基于铟镓砷/磷化铟二极管的单光子探测器组件的构建和测试，该组件针对卫星激光测距测量进行了优化。
