Abstract

Greater than 12  W of average output power has been generated from a diode-pumped Yb:YAG cladding-pumped planar waveguide laser. The laser radiation developed is linearly polarized and diffraction limited in the guiding dimension. A slope efficiency of 0.5  W/W with a peak optical–optical conversion efficiency of 0.31  W/W is achieved. In a related structure, greater than 8  W of Q-switched average output power has been generated from a Nd:YAG cladding-pumped planar waveguide laser by incorporation of a Cr4+:YAG passive Q switch monolithically into the waveguide structure. Pulse widths of 3  ns and pulse-repetition frequencies as high as 80  kHz have been demonstrated. A slope efficiency of 0.28  W/W with a peak optical–optical conversion efficiency of 0.21  W/W is achieved.

© 2001 Optical Society of America

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