Tan Yue Chuan, Chandrasekara Rakhitha, Cheng Cliff, Ling Alexander
Centre for Quantum Technologies, National University of Singapore, Block S15, 3 Science Drive 2, Singapore 117543.
Opt Express. 2013 Jul 15;21(14):16946-54. doi: 10.1364/OE.21.016946.
Silicon avalanche photodiodes (APDs) are sensitive to operating temperature fluctuations and are also susceptible to radiation flux expected in satellite-based quantum experiments. We introduce a low power voltage adjusting mechanism to overcome the effects of in-orbit temperature fluctuations. We also present data on the performance of Si APDs after irradiation (γ-ray and proton beam). Combined with an analysis of expected orbital irradiation, we propose that a Si APD in a 400 km equatorial orbit may operate beyond the lifetime of the satellite.
硅雪崩光电二极管（APD）对工作温度波动敏感，并且也易受基于卫星的量子实验中预期的辐射通量影响。我们引入一种低功耗电压调节机制来克服在轨温度波动的影响。我们还展示了硅APD在辐照（γ射线和质子束）后的性能数据。结合对预期轨道辐照的分析，我们提出在400公里赤道轨道上的硅APD可能在卫星寿命之后仍能运行。
