Abstract
Dielectric graded reflectance mirrors (GRMs) with a gaussian or supergaussian radial variation of the reflectance are known to reduce significantly the detrimental effects of hard edge diffraction in unstable laser resonators. Different types of GRMs consisting of a single graded thickness layer incorporated in a conventional multilayer system have been demonstrated. Such mirrors are beginning to be offered, in moderate reflectances, by major manufacturers for use in high gain lasers.
© 1992 Optical Society of America
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