title: Diode-pumped 250-W zigzag slab Nd:YAG oscillator amplifier system.
abstract: A laser-diode-pumped zigzag slab Nd:YAG master oscillator power amplifier (MOPA) system featuring high pulse energy and high average power was developed for pumping of an ultrashort-pulse laser system. The MOPA system consists of an oscillator, a preamplifier, two postamplifiers, and image-relay telescopes. The postamplifiers have an angle-multiplexed ring-type double-pass configuration. A pulse energy of 1.26 J and an average power of 251 W were obtained at a repetition rate of 200 Hz. The frequency-doubled power when a LiB(3)O(5) crystal was used was 105 W at a repetition rate of 170 Hz. The intensity profiles of the fundamental and the second harmonic are nearly top-hat shaped and are suitable for pumping.
authors: K
authors: K
authors: Tei
authors: M
authors: M
authors: Kato
authors: Y
authors: Y
authors: Niwa
authors: S
authors: S
authors: Harayama
authors: Y
authors: Y
authors: Maruyama
authors: T
authors: T
authors: Matoba
authors: T
authors: T
authors: Arisawa