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Proceedings Paper

One kilowatt high-beam-quality and highly-efficient diode-pumped Nd:YAG rod laser
Author(s): Masaki Seguchi; Shuichi Fujikawa; Keisuke Furuta; Yushi Takenaka; Koji Yasui
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Paper Abstract

We have achieved a high-quality beam generation with highly efficient quasi-cw Nd:YAG laser over 1-kW with a novel side-pumping configuration using micro-lens free diode-stacks as a part of "Advanced Photon Processing and Measurement Technologies" program. We have demonstrated a power scaling of Nd:YAG rod laser over 1-kW while maintaining high-beam-quality and high-efficiency by cascaded-coupling of two identical bifocusing compensation resonators. Laser power of 1050W was obtained with the beam quality of M2 = 8 at the electric-to-optical efficiency of 23%. In this work, we also demonstrated the focusing ability of less than 50 μm diameter on the focal plane by using a f50 mm lens (N.A. 0.2).

Paper Details

Date Published: 3 March 2003
PDF: 3 pages
Proc. SPIE 4831, First International Symposium on High-Power Laser Macroprocessing, (3 March 2003); doi: 10.1117/12.497940
Show Author Affiliations
Masaki Seguchi, Mitsubishi Electric Corp. (Japan)
Shuichi Fujikawa, Mitsubishi Electric Corp. (Japan)
Keisuke Furuta, Mitsubishi Electric Corp. (Japan)
Yushi Takenaka, Mitsubishi Electric Corp. (Japan)
Koji Yasui, Mitsubishi Electric Corp. (Japan)


Published in SPIE Proceedings Vol. 4831:
First International Symposium on High-Power Laser Macroprocessing
Isamu Miyamoto; Kojiro F. Kobayashi; Koji Sugioka; Reinhart Poprawe; Henry Helvajian, Editor(s)

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