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Proceedings Paper

High-efficiency high-beam-quality 38-W Nd:YAG slab laser end-pumped by a stack with three diode bars
Author(s): Nianle Wu; Jiandong Xu; Yan Liao; Joachim Giesekus; Keming Du; Peter Loosen; Reinhart Poprawe
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Paper Abstract

A Nd:YAG slab is partially end-pumped by a diode laser stack with three diode laser bars. The pumped volume has a rectangular cross section. A hybrid resonator which is stable in the plane of small dimension and off-axis unstable in the plane of large dimension of the gain cross section was used, in order to obtain highly efficient laser operation at diffraction limited beam quality. In this paper, the laser design and experimental results are reported. 31.2 W output power was obtained with M2 equals 1.3 in the unstable plane and M2 equals 1.7 in the stable plane. 38.6 W output power was obtained with M2 equals 1.7 in the unstable plane and M2 equals 3.9 in the stable plane.

Paper Details

Date Published: 15 August 1998
PDF: 8 pages
Proc. SPIE 3550, Laser Processing of Materials and Industrial Applications II, (15 August 1998); doi: 10.1117/12.317921
Show Author Affiliations
Nianle Wu, Tsinghua Univ. (China)
Jiandong Xu, Harbin Institute of Technology (China)
Yan Liao, Shanghai Institute of Optics and Fine Mechanics (China)
Joachim Giesekus, Fraunhofer-Institut fuer Lasertechnik (Germany)
Keming Du, Fraunhofer-Institut fuer Lasertechnik (Germany)
Peter Loosen, Fraunhofer-Institut fuer Lasertechnik (Germany)
Reinhart Poprawe, Fraunhofer-Institut fuer Lasertechnik (Germany)


Published in SPIE Proceedings Vol. 3550:
Laser Processing of Materials and Industrial Applications II
ShuShen Deng; S. C. Wang, Editor(s)

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