8.5  W mode-locked Yb:Lu_1.5Y_1.5Al₅O₁₂ laser with master oscillator power amplifiers

Abstract

We report on a diode-pumped passively mode-locked ${\mathrm{Yb}\text{:}\mathrm{Lu}}_{1.5}{\mathrm{Y}}_{1.5}{\mathrm{Al}}_5{\mathrm{O}}_{12}$ (Yb:LuYAG) laser for the first time to our knowledge. With the mixed crystal of Yb:LuYAG as gain medium, the mode-locked laser generated 2.2 W of average output power with a repetition rate of 83.9 MHz and pulse duration of 2.4 ps at the wavelength of 1030 nm. In order to obtain higher output power, the output from the mode-locked oscillator was further amplified to 8.5 W by two-stage single-pass amplifiers. The high-power picosecond laser is very useful for applications such as pumping of midinfrared optical parametric oscillators, material microprocessing, and UV light generation.

© 2015 Optical Society of America

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