Thermomechanical Behavior of Conduction-Cooled High-Power Diode Laser Arrays

Nie, Zhiqiang; Lu, Yuanzheng; Chen, Tianqi; Zhang, Pu; Wu, Dihai; Wang, Mingpei; Xiong, Lixia; Li, Xiaoning; Wang, Zhenfu; Liu, Xingsheng

doi:10.1109/tcpmt.2018.2820183

Cited by 7 publications

(2 citation statements)

References 24 publications

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“…[15][16][17] The consideration of the stress conditions is divided into several kinds. [18][19][20][21] Stress can be decomposed into hydrostatic and shear stresses. [22] One type of shear stress is related to the change of lengths along the three axes and the other is related to the rotation of the axes of an infinitesimal cube.…”

Section: Introductionmentioning

confidence: 99%

Characteristics Analysis of Leakage Current in an Array of InSb Photodetector: The Effect of Compressive and Tensile Stresses

Heidarzadeh

2023

Physica Status Solidi (b)

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Herein, the effect of tensile and compressive stress on the performance of a 3 × 3 InSb array as an infrared photodetector is investigated. At first, the effect of mesh sizes on simulated results is evaluated and the results are validated with a good agreement. It is shown that the main effect of stress is related to the Γ (bandgap) point of the band structure. This shift causes the densities of intrinsic and minority carriers to decrease in the case of tensile stress and increase in the case of compressive stress. Using a 3D simulation, it is investigated that tensile stress reduces the dark current while compressive stress induces that. However, it is an interesting result that an increment in applied compressive stress interrupts the InSb photodetector performances and vice versa tensile stress helps the photocurrent to have a lower dark current. So, these results can be used to manage the dark current in the field of the photodetector. Finally, the crosstalk of the simulated structure as one of its main characteristics is calculated.

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Section: Introductionmentioning

confidence: 99%

Characteristics Analysis of Leakage Current in an Array of InSb Photodetector: The Effect of Compressive and Tensile Stresses

Heidarzadeh

2023

Physica Status Solidi (b)

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“…As the injection current increases, the chip is seriously heated, which may cause the rapid increase in the temperature of the active region of the laser, leading to problems such as the increase of the threshold current, the red shift of the wavelength, and the decrease of the slope efficiency [3]. Photonic crystal laser diodes are characterized by low divergence angle and high brightness [4][5][6], therefore, it is of great importance to deeply study the thermal characteristics of high-power photonic crystal laser diodes, solve their heat dissipation problems, and also improve the output power and increase the lifetime [7].…”

Section: Introductionmentioning

confidence: 99%

Study of thermal characteristics of high-power photonic crystal laser diodes with CS-mount package

Liu

Zhou

et al. 2022

Semiconductor Lasers and Applications XII

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Photonic crystal laser diodes are characterized by low divergence angle and high brightness, but thermal effects have become a major obstacle to further improvement of output power and efficiency. The thermal characteristics of highpower photonic crystal laser diodes are of great importance to improve the output power and increase the lifetime. In this paper, the physical heat dissipation model of a single photonic crystal laser diode with CS-mount package is established. Steady-state thermal characteristics simulations are performed using the finite element method (FEM) and the influences of different parameters, such as solder, transition heat sink and heat sink on the thermal characteristics are analyzed. The simulation results show that the thickness and thermal conductivity of the heat sink materials are the main factors impacting the heat dissipation of the laser. The thermal resistance of the laser can be reduced effectively by using heat sink materials of high thermal conductivity. On the premise of ensuring wettability and reliability, the thickness of the solder layer should be decreased. A photonic crystal laser diode with a cavity length of 4 mm and a stripe width of 350 µm based on an optimized heat dissipation structure is designed and fabricated. The CW output power of 41.9 W, the vertical divergence angle of 18.48°and the thermal resistance of 1.54 K/W are obtained under the injection current of 50 A at 20 ℃.

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Research on the influence of laser thermal characteristics on misalignment of optical components

Yan

Zheng

Sun³

et al. 2021

Optik

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Thermomechanical Behavior of Conduction-Cooled High-Power Diode Laser Arrays

Cited by 7 publications

References 24 publications

Characteristics Analysis of Leakage Current in an Array of InSb Photodetector: The Effect of Compressive and Tensile Stresses

Characteristics Analysis of Leakage Current in an Array of InSb Photodetector: The Effect of Compressive and Tensile Stresses

Study of thermal characteristics of high-power photonic crystal laser diodes with CS-mount package

Research on the influence of laser thermal characteristics on misalignment of optical components

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