Abstract

Raman lasers which employ intracavity Raman shifting in crystalline materials have become widely recognized as a highly efficient and practical means of extending the spectral coverage of established Nd laser systems. Of particular interest is the yellow-orange wavelength region, which can be efficiently accessed through intracavity frequency doubling of the Stokes field. These systems are simple and versatile, and by choosing different laser and Raman crystals, a range of output wavelengths can be obtained for potential applications in the areas of medicine, biomedicine and remote sensing. Self-Raman lasers are a subgroup of intracavity Raman lasers in which the laser crystal is also Raman- active. Self-Raman laser action has been investigated in a variety of media including; Nd:GdVO4, Nd:YVO4, Nd:PbMoO4, and Nd:KGd(WO4)2. To-date however only Nd:KGW1 has been demonstrated to operate in a cw mode due its high Raman gain and the long crystal lengths available. In tins paper we report for the first time cw self-Raman laser operation in Nd:GdVO4 at 1173 mn and intracavity-doubled cw output in the yellow at 586 nm.

© 2007 IEEE

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