Abstract

A Barium Nitrate Raman laser pumped by a Q-switched Nd:YAG laser has been developed. The Raman output was doubled in LBO with conversion efficiencies as high as 43%. The main limitations of this laser have been identified as the shot to shot output stability and high beam divergence. High beam divergence complicates collimation and therefore subsequent frequency doubling due to the low acceptance angle values for most nonlinear crystals. Beam homogeneity of the Raman laser is very sensitive to the quality of the Raman medium.

© 2001 Optical Society of America

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