A 250 mJ, 5 Hz repetition rate optical parametric chirped-pulse amplifier with near-Fourier-transform-limited, 430 fs pulses and a beam that can be focused to near the diffraction limit is demonstrated. A pump laser with engineered spatial and temporal profiles allows an overall pump-to-signal conversion efficiency of 34% to be achieved.
© 2005 Optical Society of America
Vincent Bagnoud, Ildar A. Begishev, Mark J. Guardalben, Jason Puth, and Jonathan D. Zuegel, "5 Hz, >250 mJ optical parametric chirped-pulse amplifier at 1053 nm," Opt. Lett. 30, 1843-1845 (2005)