CAJ | 학술논문

介绍了在高于253 K的温度下,实现红外单光子探测的实验.选用拉通电压较高的雪崩光电二极管(APD),设计制作了非线性限流技术保护高温工作的APD,利用半导体热电制冷器,在256.8K的温度下,实现了1550 nm波段的单光子探测实验.单光子探测的暗记数率为3.13×10-5 ns,在220 kHz/s的单光子脉冲速率下,探测效率为2.08%.
개소료재고우253 K적온도하,실현홍외단광자탐측적실험.선용랍통전압교고적설붕광전이겁관(APD),설계제작료비선성한류기술보호고온공작적APD,이용반도체열전제랭기,재256.8K적온도하,실현료1550 nm파단적단광자탐측실험.단광자탐측적암기수솔위3.13×10-5 ns,재220 kHz/s적단광자맥충속솔하,탐측효솔위2.08%.
The selected APDs which have higher punch through voltage are used to prove single photon detection at 1550 nm communication wavelengths at temperature of above 253 K.In the experiment, a controllable nonlinear current limiting circuit is used to protect the APD operated in Geiger mode at high temperature. Single photon detection at 1550 nm communication wavelengths, cooled by a thermo-electrical cooler, were experimentally demonstrated at temperature of 257.8 K. Its dark count is 3.13×10-5 ns and single photon detection efficiency is 2.08%. The experimental data indicate that it is possible to realize single photon detection at higher temperature. The APDs operated at the temperature of above 253 K can simplify the cooling device greatly.