High-Power VCSEL-Pumped Slab Laser With Temperature Fluctuation Adaptability

Di, Peng-cheng; Li, Xuepeng; Yang, Jing; Wang, Rujun; Wang, Xiaojun; Liu, Ke; Cui, Dafu; Peng, Qinjun

doi:10.1109/lpt.2021.3065510

Cited by 6 publications

(2 citation statements)

References 23 publications

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“…The above simulation results illustrate the theoretical feasibility of the proposed RLC loop model. Considering the effect of temperature on the pulsed laser drive circuit [14], [15], [16], the emission re-frequency is set to be 3 kHz, the pulse width to be 20 ns, the amplitude to be 3.3 V, the power supply voltage to be 15V for the MOS tube driver chip, and the values of the storage capacitor, loop inductor, loop resistor, and stray capacitor in the circuit are set to be C1=1μF, L1=10nH, R1=0.5 Ω , C2=10nF, respectively. The RLC loop bias voltage is set to 15 V [17], [18], the temperature interval is set to be from -50°C to 50°C with a step of 10°C, and the results of the forward drive current and laser output power obtained by simulation are shown in Fig.…”

Section: Simulink Modelling Of Rlc Loop Equations and Rate Equationsmentioning

confidence: 99%

Research on Temperature Characteristics of Pulse Laser Fuze Drive Circuit

Liu,

Wang,

et al. 2024

IEEE Access

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The change in laser output power caused by the temperature change of the pulse laser fuze drive circuit directly affects the detection distance and accuracy. In order to achieve accurate distance determination of the pulse laser fuze, it is necessary to study the influence of temperature changes on the output characteristics of the pulse laser fuze drive circuit. In this paper, we study the changes in peak power caused by changes in component parameters such as resistors, capacitors, and laser diodes in the pulse laser drive circuit, which is caused by typical temperature gradients in the transient state. Based on Simulink software, a simulation model of pulsed laser drive circuit is built, and based on the theory of RLC loop equation and laser rate equation, the temperature-dependent gain coefficients are introduced to obtain the laser output characteristics corresponding to typical temperature. As a main result, we found that the laser output power decreases by about 10% during the temperature change from -50°C to 50°C. A hardware test platform is built to verify that the error is no more than 1%. The above study provides a reliable method for the design of the temperature model of the pulsed laser fuze drive circuit.INDEX TERMS Laser fuze, pulse laser drive circuit, temperature characteristics, circuit-level modeling.

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Section: Simulink Modelling Of Rlc Loop Equations and Rate Equationsmentioning

confidence: 99%

Research on Temperature Characteristics of Pulse Laser Fuze Drive Circuit

Liu,

Wang,

et al. 2024

IEEE Access

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“…The slab is face-pumped by six 808 nm quasi-continue-wave (QCW) microchannel-cooled laser diode arrays (LDA), with each array containing six bars. The temperature of cooling water for the LDA is tuned to 20 • C (±0.2 • C) to match the absorption spectrum of the crystal medium [23]. A pump beam with a 300 µs pump pulse duration and 500 Hz pulse repetition rate (PRR) is normally incident on the top face of the slab via a quartz duct.…”

Section: Generation Of High-purity Nanosecond Hg 0n Laser Beamsmentioning

confidence: 99%

High-Power, High-Purity HG0n Hermite–Gaussian Laser Beam Generation in Cascaded Large Aspect Ratio Slabs

Yang,

Zhou

et al. 2023

Applied Sciences

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High-power, high-purity, nanosecond (ns) one-dimensional HG0n laser beams are proposed and demonstrated by using Nd:YAG cascaded slabs with a large aspect ratio. The HG0n laser beams are generated by adjusting the pump distribution, the intracavity apertures, and the tilt angle of the output coupler (OC). By controlling the gain and loss of HG0n modes of different orders, the high-purity, one-dimensional, high-order HG0n laser beams with orders 1 to 9 (HG01 to HG09) are produced, and their beam quality factors M2 align well with the theoretical predictions. Meanwhile, the large aspect ratio slab provides an ideal amplifier for the strip-shaped HG0n laser beams, and further power scaling is achieved by seeding the generated HG0n laser beams into an amplifier with an identical slab module. For the HG09 mode, the average power is amplified from 289 mW to 4.73 W with 294 ns pulse width, corresponding to a peak power of 32 kW. Moreover, above 5 W average power is achieved for all HG01 to HG08 modes. Hopefully, this scheme provides a solution for high-power and high-purity HG0n laser beam generation based on the slab-shaped configuration.

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High-Power Narrow-Pulse Width VCSEL Array Laser Source for Flash LiDAR

Tang

Zhao

et al. 2022

2022 IEEE International Conference on Power Systems and Electrical Technology (PSET)

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High-Power VCSEL-Pumped Slab Laser With Temperature Fluctuation Adaptability

Cited by 6 publications

References 23 publications

Research on Temperature Characteristics of Pulse Laser Fuze Drive Circuit

Research on Temperature Characteristics of Pulse Laser Fuze Drive Circuit

High-Power, High-Purity HG0n Hermite–Gaussian Laser Beam Generation in Cascaded Large Aspect Ratio Slabs

High-Power Narrow-Pulse Width VCSEL Array Laser Source for Flash LiDAR

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