Kim Yong-Su, Jeong Youn-Chang, Sauge Sebastien, Makarov Vadim, Kim Yoon-Ho
Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Korea.
Rev Sci Instrum. 2011 Sep;82(9):093110. doi: 10.1063/1.3641294.
We report operation and characterization of a lab-assembled single-photon detector based on commercial silicon avalanche photodiodes (PerkinElmer C30902SH, C30921SH). Dark count rate as low as 5 Hz was achieved by cooling the photodiodes down to -80 °C. While afterpulsing increased as the photodiode temperature was decreased, total afterpulse probability did not become significant due to detector's relatively long deadtime in a passively-quenched scheme. We measured photon detection efficiency >50% at 806 nm.
我们报告了基于商用硅雪崩光电二极管（珀金埃尔默C30902SH、C30921SH）在实验室组装的单光子探测器的运行情况和特性。通过将光电二极管冷却至-80°C，实现了低至5 Hz的暗计数率。虽然随着光电二极管温度降低后脉冲增加，但由于探测器在被动猝灭方案中的相对较长死时间，总后脉冲概率并未变得显著。我们在806 nm处测量到光子探测效率>50%。
