Abstract

We report the efficient compact deep-blue laser at $457\mathrm{nm}$ generation by intracavity frequency doubling of a continuous wave (cw) laser operation of a diode-pumped $\mathrm{Nd}:\mathrm{Y}\mathrm{V}{\mathrm{O}}_4$ laser on the ${}^4\mathrm{F}_{3∕2}\to {}^4\mathrm{I}_{9∕2}$ transition at $914\mathrm{nm}$. An LBO crystal, cut for critical type I phase matching at room temperature is used for second-harmonic generation (SHG) of the laser. At an incident pump power of $38\mathrm{W}$, as high as $13.2\mathrm{W}$ of cw output power at $457\mathrm{nm}$ is achieved with $15\text{-}\mathrm{mm}$-long LBO. The optical-to-optical conversion efficiency is up to 34.7%, and the power stability in $2\mathrm{h}$ is better than $\pm 2.68\%$.

© 2009 Optical Society of America

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