Design of double-layer MoSi superconducting microstrip single-photon detector with a high-light absorption

Xinxin Lu; Jinyi Zhu; Shiyu Zou; Yunkun Zhao; Jiliang Yang; Kemi Xu

doi:10.1117/12.3032026

10 October 2024 Design of double-layer MoSi superconducting microstrip single-photon detector with a high-light absorption

Xinxin Lu, Jinyi Zhu, Shiyu Zou, Yunkun Zhao, Jiliang Yang, Kemi Xu

Author Affiliations +

Proceedings Volume 13278, Seventh Global Intelligent Industry Conference (GIIC 2024); 1327805 (2024) https://doi.org/10.1117/12.3032026
Event: Seventh Global Intelligent Industry Conference (GIIC 2024), 2024, Shenzhen, China

Abstract

We report a design of double-layer MoSi superconducting microstrip single-photon detector(SMSPD) at 1550 nm. The proposed structure consists of a top anti-reflection dielectric layer, a optical cavity and a double microstrip layer. We optimize the thickness of the anti-reflection layer to enhance the light absorption through the Finite-Difference Time-Domain(FDTD) method. The simulation result indicates that the optimized device structure has an light absorption rate exceeds 99.9%.This paper provides a new design structure for subsequent high-efficiency SMSPDs.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xinxin Lu, Jinyi Zhu, Shiyu Zou, Yunkun Zhao, Jiliang Yang, and Kemi Xu "Design of double-layer MoSi superconducting microstrip single-photon detector with a high-light absorption", Proc. SPIE 13278, Seventh Global Intelligent Industry Conference (GIIC 2024), 1327805 (10 October 2024); https://doi.org/10.1117/12.3032026

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