Abstract

Efficient continuous-wave (CW) intracavity frequency doubling of a diode-end-pumped Nd:GdVO4 laser operating on 4F_(3/2)-4I_(9/2) transitions at 912 nm has been demonstrated. A symmetrical cavity with two laser rods is designed, which divides the pump power between the two laser rods, allowing for greater power scalability. An 18-mm-long BiBO crystal, cut for critical type I phase matching, is used for the intracavity frequency-doubled laser. A maximum output power of 6.2 W in the blue spectral range at 456 nm has been achieved with the pump power of 36 W. The beam quality M2 value is 2.5 in both horizontal and vertical directions. The ellipticity of the deep blue laser is 0.98, and the power stability is better than 3.2% at the maximum output power.

© 2007 Chinese Optics Letters

Experimental study of the generation of a blue laser by intracavity frequency doubling of a cw Nd:GdVO₄ laser with lithium borate

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12.0-W continuous-wave diode-end-pumped Nd:GdVO₄ laser with high brightness operating at 912-nm

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13.2 W laser-diode-pumped Nd:YVO₄/LBO blue laser at 457 nm

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6-W diode-end-pumped Nd:GdVO₄/LBO quasi-continuous-wave red laser at 671 nm

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