Highly efficient diode-stack, end-pumped Nd:YAG slab laser with symmetrized beam quality
- Institut fuer Lasertechnik, Steinbachstrasse 15, 52074 Aachen (Germany)
An efficient high-power cw Nd:YAG slab laser, partially end pumped by diode-laser stacks, and a novel beam-shaping technique are reported. The optical efficiency amounted to 44{percent}, and the slope efficiency amounted to 55{percent}. Introducing an intracavity Brewster plate to polarize the laser beam, we obtained an optical efficiency of 35{percent} and a slope efficiency of 41{percent}. The output beam was rectangular and the beam quality asymmetric in two orthogonal directions. To equalize the beam quality, we introduced a step-mirror beam-shaping technique. The beam-shaping technique and the results obtained are discussed. {copyright} 1997 Optical Society of America
- OSTI ID:
- 544756
- Journal Information:
- Applied Optics, Journal Name: Applied Optics Journal Issue: 24 Vol. 36; ISSN APOPAI; ISSN 0003-6935
- Country of Publication:
- United States
- Language:
- English
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