Design of high quantum efficiency SPAD single-photon detector based on metasurface

Autor:	Liangqiang Xu, Guilan Feng, Shanyan Huang, Jinlv Pan, Tianqi Zhao
Rok vydání:	2023
Předmět:	History Computer Science Applications Education
Zdroj:	Journal of Physics: Conference Series. 2483:012038
ISSN:	1742-6596 1742-6588
DOI:	10.1088/1742-6596/2483/1/012038
Popis:	This work discusses several metasurface structure types, their manufacturing processes, and the design and simulation of nanopyramid arrays, square slot arrays, and funnel arrays to improve absorption. In particular, a silicon-based continuous thin gold film-covered deep grooved thin metal structure was constructed and examined. It surpasses the silicon materials’ absorption thresholds, considerably expanding the NIR’s absorption range to 2000 nanometers. More information is provided regarding the impact of trench depth on cavity pattern and near-infrared absorption. Its preparation process is detailed, and its compatibility with SPAD single-photon detectors is confirmed. This information is likely to encourage the use of SPAD in domains such as near-infrared optical communication and other low-light detecting technologies.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::024e5f9d1677b641b4905bf9bdbb22e9 https://doi.org/10.1088/1742-6596/2483/1/012038 Zobrazit plný text záznamu