High Average Power Nd:YAG Slab Laser

Takeshi Kasai; Yoshihiko Sindo; Keiji Haga

doi:10.1117/12.951164

6 July 1989 High Average Power Nd:YAG Slab Laser

Takeshi Kasai, Yoshihiko Sindo, Keiji Haga

Proceedings Volume 1040, High Power and Solid State Lasers II; (1989) https://doi.org/10.1117/12.951164
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

Abstract

A slab geometry Nd:YAG laser with a zigzag optical path is described. The dimensions of the Nd:YAG slab are 5.6 x 18.4 x 153.9 mm, and Nei' ion concentration is 1.1 at.%. Two krypton flashlamps, one located on each side of the YAG slab, are used for pumping. The conditions for normal pulsed operation were as follows: the repetition rate was from 5 to 27 pps, and the pulse durations were 4 and 9.9 ms. With the above conditions, a maximum average output power of 500 W was obtained with an efficiency of 2 %, the slope efficiency being 2.4 %. The beam divergence was estimated to be 10x25 mrad. The stability of the laser output power was about ±1.5 %. Another oscillator that includes intra-cavity cylindrical lenses, was also designed. Using this resonator configuration reduced the beam divergence to about 7.6 x8.2 mrad. The preliminary laser processing experiment was attemped using this laser oscillator.

Citation Download Citation

Takeshi Kasai, Yoshihiko Sindo, and Keiji Haga "High Average Power Nd:YAG Slab Laser", Proc. SPIE 1040, High Power and Solid State Lasers II, (6 July 1989); https://doi.org/10.1117/12.951164

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