title: 250 mJ, self-adaptive, diode-side-pumped Nd:YAG slab laser.
abstract: A scheme of self-adaptive, closed-loop, diode-side-pumped Nd:YAG slab laser was presented. As a result of four-wave mixing of standing waves intersecting at a small angle in a closed-loop cavity, the self-adaptive process of beam cleaning leading to fundamental mode operation despite severe asymmetry of the inversion profile and thermal-optical distortion was achieved. The output beam was extracted from the cavity as the first- order diffraction beam on the dynamic gain gratings created in an active medium. The near-diffraction-limited (parameter M(2)<1.4, divergence of 1 mrad) output beam of 250 mJ energy and the optical slope efficiency of 30% at a repetition rate of up to 25 Hz in a free-running regime were demonstrated.
authors: Institute of Optoelectronics, Military University of Technology, ul. gen. S. Kaliskiego 2, 00-908 Warsaw, Poland.
authors: W
authors: W
authors: Zendzian
authors: J K
authors: JK
authors: Jabczynski
authors: M
authors: M
authors: Kaskow
authors: L
authors: L
authors: Gorajek
authors: J
authors: J
authors: Kwiatkowski
authors: K
authors: K
authors: Kopczynski