10 W-level sub-100 ps 1 MHz MOPA laser with a microchip master oscillator.

A 10 W level master oscillator power amplifier (MOPA) laser with pulse repetition rate up to 1 MHz and 75-95 ps pulse duration was developed based on a passively -switched : microchip 1064 nm laser as a master oscillator. A double-rod double-end-pumping configuration of two-pass Nd:YAG ring power amplifier was used to achieve high gain, near-Fourier-transform-limited pulses, and laser beam quality factor =1.27 along both the horizontal and vertical directions.

0.43 J/100 ps Nd:YAG laser with adaptive compensation of thermally induced lens.

We demonstrate a diode-pumped master oscillator power amplifier Nd:YAG 1064 nm laser with sub-joule-level output energy of 0.43 J, high pulse repetition rate of 200 Hz, and short pulse duration of 100 ps. The 5 mJ master oscillator consisted of a 100 nJ/100 ps Nd:YVO microchip laser and end-pumped Nd:YAG regenerative amplifier.