We achieved a 1.3× diffraction-limited output beam with a pulse energy of 0.76 J at 60 Hz (average power of 46 W) at 1.064 μm from a diode-pumped Nd:YAG master oscillator power amplifier rod laser using a diamond-turned aspheric optic to compensate thermally induced phase distortion of the gain medium. The output was frequency doubled in KTP to 30 W (0.5-J pulse energy) and 2.4× diffraction-limited at 532 nm.
© 1996 Optical Society of America
Original Manuscript: November 20, 1995
Revised Manuscript: March 27, 1996
Published: October 20, 1996
Jeffrey J. Kasinski and Ralph L. Burnham, "Near-diffraction-limited, high-energy, high-power, diode-pumped laser using thermal aberration correction with aspheric diamond-turned optics," Appl. Opt. 35, 5949-5954 (1996)