Compact and fully functional high-frequency sine wave gating InGaAs/InP single-photon detector module
- URL: http://arxiv.org/abs/2503.04173v1
- Date: Thu, 06 Mar 2025 07:38:43 GMT
- Title: Compact and fully functional high-frequency sine wave gating InGaAs/InP single-photon detector module
- Authors: Qi Xu, Chao Yu, Dajian Cui, Xuan-Yi Zhang, Wei Chen, Yu-Qiang Fang, Lianjun Jiang, Qixia Tong, Jianglin Zhao, Jun Zhang,
- Abstract summary: High-frequency sine wave gating (SWG) InGaAs/InP single-photon detectors (SPDs) are widely used for synchronous near-infrared single-photon detection.<n>Here we present, to the best of our knowledge, the most compact and fully functional high-frequency SWG InGaAs/InP SPD.
- Score: 11.837750976908765
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: High-frequency sine wave gating (SWG) InGaAs/InP single-photon detectors (SPDs) are widely used for synchronous near-infrared single-photon detection. For practical use, the size of SPD is one of the most concerning features for system integration. Here we present, to the best of our knowledge, the most compact and fully functional high-frequency SWG InGaAs/InP SPD. We develop a sine wave gating integrated circuit (SWGIC) using system-in-package technology that supports functions including large amplitude sine wave gate generation, coincidence gate generation, phase regulation, amplitude monitoring, and amplitude modulation. Moreover, we design and fabricate a high-performance multi-mode fiber coupled InGaAs/InP single-photon avalanche diode (SPAD) with a compact butterfly package. Furthermore, we implement a monolithically integrated readout circuit (MIRC) to extract the weak avalanche signal from large capacitance response of SWG. Finally, the SWGIC, SPAD, MIRC, and the affiliated circuits are integrated into a single module with a size of 6 cm x 5.7 cm x 1.7 cm. After characterization, the SPD module exhibits a photon detection efficiency of 40%, a dark count rate of 9 kcps, and an afterpulse probability of 4.6% at an operation temperature of 238 K and a hold-off time of 160 ns. Our work provides a practical solution for applications necessitating highly integrated near-infrared single-photon detection.
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