A slab laser system consisting of three Nd:YAG slabs with dimensions 7 mm × 26 mm × 191 mm was operated with different resonators in an oscillator–amplifier–amplifier arrangement. In single-shot operation the system provided a maximum output energy of 148 J with a pulse duration of 4 ms and an overall efficiency of 4.3%. A stable resonator provided a maximum steady output power of 2260 W, and we measured beam parameter products of 8 mm mrad in the x direction and 100 mm mrad in the y direction. An output power of 1460 W and beam parameter products of less than 4 mm mrad in both directions were obtained with an unstable resonator with a graded-reflectivity mirror.
© 1993 Optical Society of America
Original Manuscript: June 4, 1993
Published: October 15, 1993
Norman Hodgson, Qitao Lü, and Shalei Dong, "Performance of a 2.3-kW Nd:YAG slab laser system," Opt. Lett. 18, 1727-1729 (1993)