Enhanced optical pumping of materials exhibiting polarization-dependent absorption

摘要

The oscillator has a laser head including a gain medium exhibiting polarization-dependent absorption. A pump source produces a pump beam at a wavelength for which the absorption coefficients on the respective crystallographic axes are equal or present a relative difference that is reduced by a factor of two. A pump light is delivered to a gain medium through a non-polarization-maintaining device. An independent claim is also included for a method of pumping laser materials having polarization-dependent absorption.