CAJ | 학술논문

近红外单光子读取电路读取盖革模式下的雪崩光电二极管雪崩信号。采用两个ps级的可编程ECL延时芯片，获得可调的门控脉冲，控制雪崩光电二极管(APD)死时间和淬灭雪崩信号，同时减少后脉冲的影响。详细介绍了门控脉冲产生模块、死时间控制模块以及雪崩信号提取电路。主要采用延迟鉴别、边沿锁存的方法提取雪崩光电二极管雪崩信号。在整个实验过程中，雪崩光电二极管工作温度为-55℃，脉冲宽度10 ns，门控频率1 MHz和10 MHz，激光器激光波长1550 nm，单光子探测器是PGA-400InGaAs雪崩光电二极管。
근홍외단광자독취전로독취개혁모식하적설붕광전이겁관설붕신호。채용량개ps급적가편정ECL연시심편，획득가조적문공맥충，공제설붕광전이겁관(APD)사시간화쉬멸설붕신호，동시감소후맥충적영향。상세개소료문공맥충산생모괴、사시간공제모괴이급설붕신호제취전로。주요채용연지감별、변연쇄존적방법제취설붕광전이겁관설붕신호。재정개실험과정중，설붕광전이겁관공작온도위-55℃，맥충관도10 ns，문공빈솔1 MHz화10 MHz，격광기격광파장1550 nm，단광자탐측기시PGA-400InGaAs설붕광전이겁관。
The near infrared readout circuit reads avalanche signals of avalanche-photon-diode operating in the Geiger-mode. Two ps-grade programmable ECL delay chips were used to get adjustable gate pulse, control APD′s dead time, quench the avalanche signals and decrease the after-pulsing. The paper detailed describes gate pulse generated block, dead time controlment block and avalanche signals readout block. A moderate delay and edge trigger flip-flop were used to read avalanche-photon-diode signals. During the whole experiments, avalanche-photon-diode worked in the temperature -55°C, the gate pulse width is 10 ns, the gate frequency are 1 MHz and 10 MHz, the wavelength of laser is 1 550 nm and the single photon detector is PGA-400 InGaAs avalanche-photon-diode.