Abstract

We generated efficient blue laser output at $454\mathrm{nm}$ by intracavity frequency doubling of a continuous-wave (cw) diode-pumped $\mathrm{Nd}\text{:}\mathrm{Y}\mathrm{Li}{\mathrm{F}}_4$ (Nd:YLF) laser at $908\mathrm{nm}$ based on the ${}^4{F}_{3/2}-{}^4{I}_{9/2}$ transition. With $32.8\mathrm{W}$ of incident pump power at $880\mathrm{nm}$ and the frequency-doubling crystal ${\mathrm{Li}\mathrm{B}}_3{\mathrm{O}}_5$, a level as high as $4.33\mathrm{W}$ of cw output power at $454\mathrm{nm}$ is achieved, corresponding to an optical conversion efficiency of 13.2% with respect to the incident pump power. To the best of our knowledge, this is the first blue laser at $454\mathrm{nm}$ generated by intracavity frequency doubling of a diode-pumped Nd:YLF.

© 2010 Optical Society of America

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