Acta Optica Sinica, Volume. 3, Issue 2, 97(1983)
Output power increase of high power Nd:glass laser by bandwidth
The self-focusing, the most important effect on the output power of solid state lasers has been described. High frequenoy spatial modulation induced by Fresnel diffraction accelerates the effect of self-focusing. In order to eliminate the Fresnel diffraction produced by hard aperture, the bandwidth broadening of laser beam for such use is proposed and its effect of diffraction-free has been demonstrated experimently.
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DENG XIMISG, YU WENYAN, CHEN SHISHENG, DING LIMING, TAN WEIHAN. Output power increase of high power Nd:glass laser by bandwidth[J]. Acta Optica Sinica, 1983, 3(2): 97