Generation of deep ultraviolet narrow linewidth laser by mixing frequency Ti:sapphire laser at 5 kHz repetition rate

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 BiB3O6 and KBe2BO3F2, 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.

10 kHz high-power widely tunable dual-end pumped Ti:sapphire laser

“…The Ti: sapphire lasers are at present one of the most important tunable laser sources due to its widely tunable operation and good output properties, which are of significant importance in many fields such as nuclear industry, laser spectroscopy, laser chemistry and photolithography [1][2][3][4][5][6] . At present, high power and high pulse-repetition-frequency (PRF) Ti: sapphire lasers are widely studied [7][8][9][10][11][12][13][14][15] . However, due to the severe thermal effects of the Ti: sapphire crystals, the output power and PRF of the Ti: sapphire lasers are limited.…”