Optimal Design of Superconducting Nanowire Single-Photon Detector with High Light Absorptivity in Wavelength Range of 3-5 µm Based on Asymmetric Fabry-Pérot Cavity Structure

Yuchen Zhao; Hao Tian; Jianhua Dou; Yanning Yuan; Xiaoli Xi

doi:10.3788/LOP202259.1704002

Laser & Optoelectronics Progress, Volume. 59, Issue 17, 1704002(2022)

Optimal Design of Superconducting Nanowire Single-Photon Detector with High Light Absorptivity in Wavelength Range of 3-5 µm Based on Asymmetric Fabry-Pérot Cavity Structure

Yuchen Zhao, Hao Tian, Jianhua Dou, Yanning Yuan, and Xiaoli Xi^*

Author Affiliations

College of Automation and Information Engineering, Xi’an University of Technology, Xi’an 710048, Shaanxi , China

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Figures & Tables(8)

Fig. 1. Simulation model diagram of SNSPD. (a) Model 1 (M1); (b) model 2 (M2)

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$Construction results for different DBRs. (a) High refractive index film material selection; (b) cycle number selection$

Fig. 2. Construction results for different DBRs. (a) High refractive index film material selection; (b) cycle number selection

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$Intensity distributions of light field inside nanowires in M1 at 3-µm wavelength. (a) Si as a high refractive index film; (b) YSZ as a high refractive index film$

Fig. 3. Intensity distributions of light field inside nanowires in M1 at 3-µm wavelength. (a) Si as a high refractive index film; (b) YSZ as a high refractive index film

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Fig. 4. Comparison of TMM and FDTD simulation results

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Fig. 5. Comparison of absorption rate curve results of proposed design and design in Ref. [25]

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Table 1. Theoretical calculation results of DBR reflection bandwidth
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Table 1. Theoretical calculation results of DBR reflection bandwidth
Material type Ta₂O₅ Si YSZ
λ₁ /nm 4237 5214 6052
λ₂ /nm 3444 2989 2769
∆λ /nm 793 2225 3283

Table 2. Optimization results of layer thickness to be optimized in two design models after defining DBR structure
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Table 2. Optimization results of layer thickness to be optimized in two design models after defining DBR structure
Model number d₁ /nm d₂ /nm d₃ /nm
1 650 187 663
2 658 187 636

Table 3. Comparison of flatness results between proposed design and design in Ref. [25]
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Table 3. Comparison of flatness results between proposed design and design in Ref. [25]
Model number A_max A_min A_Flatness
Ref.［25］ 0.997 0.374 0.623
1 0.779 0.526 0.253
2 0.974 0.748 0.226

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Yuchen Zhao, Hao Tian, Jianhua Dou, Yanning Yuan, Xiaoli Xi. Optimal Design of Superconducting Nanowire Single-Photon Detector with High Light Absorptivity in Wavelength Range of 3-5 µm Based on Asymmetric Fabry-Pérot Cavity Structure[J]. Laser & Optoelectronics Progress, 2022, 59(17): 1704002

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Paper Information

Category: Detectors

Received: Dec. 30, 2021

Accepted: Mar. 3, 2022

Published Online: Jul. 22, 2022

The Author Email: Xiaoli Xi (xixiaoli@xaut.edu.cn)

DOI:10.3788/LOP202259.1704002

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Theoretical calculation results of DBR reflection bandwidth

Table 1. Theoretical calculation results of DBR reflection bandwidth

Table 2. Optimization results of layer thickness to be optimized in two design models after defining DBR structure

Table 2. Optimization results of layer thickness to be optimized in two design models after defining DBR structure

Table 3. Comparison of flatness results between proposed design and design in Ref. [25]

Table 3. Comparison of flatness results between proposed design and design in Ref. [25]