High-efficiency high-beam-quality 38-W Nd:YAG slab laser end-pumped by a stack with three diode bars

Nianle Wu; Jiandong Xu; Yan Liao; Joachim Giesekus; Keming Du; Peter Loosen; Reinhart Poprawe

doi:10.1117/12.317921

15 August 1998 High-efficiency high-beam-quality 38-W Nd:YAG slab laser end-pumped by a stack with three diode bars

Nianle Wu, Jiandong Xu, Yan Liao, Joachim Giesekus, Keming Du, Peter Loosen, Reinhart Poprawe

Proceedings Volume 3550, Laser Processing of Materials and Industrial Applications II; (1998) https://doi.org/10.1117/12.317921
Event: Photonics China '98, 1998, Beijing, China

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.

Citation Download Citation

Nianle Wu, Jiandong Xu, Yan Liao, Joachim Giesekus, Keming Du, Peter Loosen, and Reinhart Poprawe "High-efficiency high-beam-quality 38-W Nd:YAG slab laser end-pumped by a stack with three diode bars", Proc. SPIE 3550, Laser Processing of Materials and Industrial Applications II, (15 August 1998); https://doi.org/10.1117/12.317921

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