Yuchen Zhao, Boyang Zhao, Jiahuan Zheng, Yanning Yuan, Xiaoli Xi. Design of Superconducting Nanowire Single-Photon Detector with Broadband Light Absorption Characteristics in 3-5 µm[J]. Laser & Optoelectronics Progress, 2022, 59(1): 0104001
- Laser & Optoelectronics Progress
- Vol. 59, Issue 1, 0104001 (2022)
Fig. 1. Schematic diagram of SNSPD and its equivalent transmission line model
Fig. 2. Calculation results of upper half cavity: (a) Matching error; (b) relative position of best solution
Fig. 3. Comparison of absorption curves between representative solutions
Fig. 4. Performance comparison of all possible solutions. (a) Matching error of lower half cavity; (b) sum of broadband indicators of two resonant wavelengths
Fig. 5. Calculation results comparison between TMM and FDTD
Fig. 6. Electric field intensity distribution in nanowires. (a) Parallel to nanowire; (b) vertical to nanowire
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Table 1. Comparison of dielectric-layer thicknesses and bandwidth indicators between representative solutions
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