Abstract
Solid-state lasers with mode-selective mirrors are of great interest for nonlinear-optical applications because of the improved beam quality and enhanced output power. Q-switching with Pockels cells and SHG have been demonstrated elsewhere.1,2 We report on passive-Q-switching experiments at 1053 nm with Cr4+:YAG crystals as slow saturable absorbers inside a flashlamp-pumped Nd:glass laser resonator including a flat dielectric HR mirror and one of two different types of nonuniform-multilayer mirrors: (a) graded reflectance micro mirror array3 (grmmas) with envelope functions of the reflectance4 and (b) graded-reflectance mirrors (GRMs) with super-Gaussian profiles.
© 1995 Optical Society of America
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