Optimum design of Q-switched Nd:YAG lasers with super Gaussian mirrors

HaiBo Peng; Shiwen Zhang

doi:10.1117/12.253263

30 September 1996 Optimum design of Q-switched Nd:YAG lasers with super-Gaussian mirrors

HaiBo Peng, Shiwen Zhang

Proceedings Volume 2889, High-Power Lasers: Solid State, Gas, Excimer, and Other Advanced Lasers; (1996) https://doi.org/10.1117/12.253263
Event: Photonics China '96, 1996, Beijing, China

Abstract

Recently, high beam quality, large energy pulsed lasers with variable reflectivity mirrors has increasingly applied in nonlinear optics, scientific research lidar, industry manufacture, and military etc. To obtain high beam quality and efficient extraction simultaneously from an unstable resonator, the super Gaussian mirrors peak reflectivity R₀, the super Gaussian order n, and the round-trip magnification M are three key parameters which must be carefully selected. In this paper, intensive investigation on beam quality of unstable resonators with VRM affected by R₀, n, M, R₀Mⁿ is presented by computer simulation. A optimum design resulting near diffraction limited beam quality, large energy, high repetition is obtained. Various VRM tested in Q-switched Nd:YAG lasers pumped by flashlamp. Less than 2 X LD, 6 ns, 40 Hz, 350 mj/pulse laser beams are obtained in single oscillator, more than 1 J/pulse is realized through one amplifier. The experimental results are in good agreement with the optimum design.

Citation Download Citation

HaiBo Peng and Shiwen Zhang "Optimum design of Q-switched Nd:YAG lasers with super-Gaussian mirrors", Proc. SPIE 2889, High-Power Lasers: Solid State, Gas, Excimer, and Other Advanced Lasers, (30 September 1996); https://doi.org/10.1117/12.253263

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