Abstract

We demonstrate a scheme to generate deep ultraviolet source by the single-stage high-power Ti:sapphire laser with linewidth of 0.05 nm cryogenically operating at repetition rate of 5 kHz. The fundamental laser was tuned by an intracavity birefringent filter and three etalons with an output power greater than 8 W, corresponding to about 17% optical efficiency. The pulse width was 112 ns and $M2<1.1$. By using the nonlinear crystals $\mathrm{Bi}{\mathrm{B}}_3{\mathrm{O}}_6$ and $\mathrm{K}{\mathrm{Be}}_2\mathrm{B}{\mathrm{O}}_3{\mathrm{F}}_2$, the output power of 2.2 W at second harmonic and 8.5 mW at fourth harmonic laser of about 195 nm were produced. This compact high-repetition rate laser with narrow linewidth would be a promising tunable source for spectroscopy.

©2012 Optical Society of America

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