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Experimental study of the generation of a blue laser by intracavity frequency doubling of a cw Nd : Gd VO 4 laser with lithium borate

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Abstract

Efficient cw intracavity frequency doubling of a diode end-pumped Nd:GdVO4 laser that operates in the F3/24I9/24 transition at 912nm is demonstrated. A 15mm long lithium borate crystal, cut for critical type I phase matching at room temperature, was used for second harmonic generation of the fundamental laser. A maximum output power of 14.8W in the deep blue spectral range at 456nm was achieved at an incident pump power of 40W. In 2 h we achieved an optical-to-optical conversion efficiency of 37% with a better than 2.57% power stability.

© 2009 Optical Society of America

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