Mr. Yiwei Zhang Profile

Yiwei Zhang

at Beijing Univ of Technology

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Proceedings Article | 2 December 2020 Paper

Simulation of the influence of gain parameters on pulse formation process for VECSELs

Yiwei Zhang, Lingling Hua, Bihui Zhuang, Jinrong Tian, Yanrong Song

Proceedings Volume 11717, 117172L (2020) https://doi.org/10.1117/12.2587328

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Passively mode-locked optically pumped vertical external cavity surface-emitting lasers (OP-VECSELs) have unique properties, such as excellent beam quality, high-average output power and high repetition rate. Many applications, including frequency comb and supercontinuum, require pulses in the femtosecond regime. A numerical model in the femtosecond regime is essential to understand the pulse formation mechanism. In this paper, we present a numerical model of passively mode-locked VECSELs in the femtosecond regime. We analyze the influence of gain parameters, such as small-signal gain, saturation energy, and the gain bandwidth on the pulse characteristics. The results of the simulation can provide a direction for designing the gain chip.

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