Numerical Simulation of Laser Irradiation Damage Pulse-Width Effect on Long-Wave Quantum Well Infrared Photodetector

Jiaxin Sun; Chuanpeng Qian; Zuodong Xu; Jianmin Zhang; Xisheng Ye

doi:10.3788/LOP240788

Laser & Optoelectronics Progress, Volume. 61, Issue 21, 2114012(2024)

Numerical Simulation of Laser Irradiation Damage Pulse-Width Effect on Long-Wave Quantum Well Infrared Photodetector

Jiaxin Sun^1,2, Chuanpeng Qian^1,2、**, Zuodong Xu³, Jianmin Zhang³, and Xisheng Ye^1,2、*

¹Wang Zhijiang Innovation Center for Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

²College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China

³State Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology, Xi'an 710024, Shannxi, China

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Fig. 1. Two-dimensional axisymmetric model of laser irradiation on QWIP

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Fig. 2. Variation of decomposition and melting damage threshold with pulse width

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Fig. 3. Variation of axial temperature distribution at irradiation point with time under different laser pulse widths. (a) 100 ns; (b) 200 ns; (c) 300 ns

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Fig. 4. Comparison of variation of radial temperature distribution with time at 1521.5 nm and 1553.8 nm depths under different laser pulse widths. (a)‒(c) Depth of 1521.5 nm; (d)‒(f) depth of 1553.8 nm

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Fig. 5. Variation of stress-induced damage threshold with pulse width

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Fig. 6. Variation of circumferential stress distribution in the axial direction at the irradiation point with time under different laser pulse widths. (a) 100 ns; (b) 200 ns; (c) 300 ns

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Fig. 7. The comparison of the variation of circumferential stress distribution in the radial direction with time at 1521.5 nm and 1553.8 nm depths under different laser pulse widths. (a)‒(c) Depth of 1521.5 nm; (d)‒(f) depth of 1553.8 nm

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Table 1. Thermodynamic parameters of the QWIP^[9]

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Table 1. Thermodynamic parameters of the QWIP^[9]

Parameter	GaAs	Al_0.22Ga_0.78As	Al_0.55Ga_0.45As
Density $ρ$ /（kg·m^-3）	5333	4977	4462
Thermal conductivity $κ$ /（W·m^-1·K^-1）	55.00	20.36	13.42
Specific heat capacity C /（J·kg^-1·K^-1）	334.72	362.33	403.76
Thermal expansion coefficient $α_{T}$ /K^-1	6.40×10^-6	6.16×10^-6	5.74×10^-6
Poisson’s ratio $μ$	0.310	0.332	0.365
Young’s modulus $E$ /Pa	8.53×10¹⁰	8.49×10¹⁰	8.43×10¹⁰

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Jiaxin Sun, Chuanpeng Qian, Zuodong Xu, Jianmin Zhang, Xisheng Ye. Numerical Simulation of Laser Irradiation Damage Pulse-Width Effect on Long-Wave Quantum Well Infrared Photodetector[J]. Laser & Optoelectronics Progress, 2024, 61(21): 2114012

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