High-average-power Nd:YAG slab with laser with improved beam quality

Shiwen Zhang

doi:10.1117/12.253259

30 September 1996 High-average-power Nd:YAG slab laser with improved beam quality

Shiwen Zhang

Proceedings Volume 2889, High-Power Lasers: Solid State, Gas, Excimer, and Other Advanced Lasers; (1996) https://doi.org/10.1117/12.253259
Event: Photonics China '96, 1996, Beijing, China

Abstract

The fundamental concepts and developments of solid-state slab laser technology is briefly reviewed. The performance of the high average power zigzag Nd:YAG slab laser facility having been established at NCRIEO is presented. Experiments with several slabs of different dimensions and qualities were performed and the results of two of them are presented. Stable, cylindrical and spherical unstable resonator configurations were tested. When the devices worked at a repetition rate of 50 Hz and the pumping pulse energy of 307 J, the maximum output from a cylindrical 1D unstable resonator is 690 W with a total efficiency of 4.5%. The divergent angle is 3.6 X 0.5 mrad in Y and X directions respectively corresponding to about 10.8 X 1.62 times diffraction limit and a beam parameter product d₀/4 about 5.5 X 0.75 mm.mrad in Y and X directions respectively. The device worked continuously at above 630 W output level for an hour. When the device worked at a repetition rate of 100 Hz, the maximum output power was 520 W.

Citation Download Citation

Shiwen Zhang "High-average-power Nd:YAG slab laser with improved beam quality", Proc. SPIE 2889, High-Power Lasers: Solid State, Gas, Excimer, and Other Advanced Lasers, (30 September 1996); https://doi.org/10.1117/12.253259

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