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Proceedings Paper

High-power and high-beam-quality diode-pumped solid state Nd:YAG laser
Author(s): Masaki Seguchi; Shuichi Fujikawa; Tetsuo Kojima; Keisuke Furuta; Yushi Takenaka; Jun-ichi Nishimae
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Paper Abstract

We have achieved a high-quality beam generation wih 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 f50mm lens (N.A. 0.2). Moreover, with driving AO-Q switch in burst mode operation, over 2MW pulse peek is demonstrated.

Paper Details

Date Published: 18 November 2003
PDF: 3 pages
Proc. SPIE 5063, Fourth International Symposium on Laser Precision Microfabrication, (18 November 2003); doi: 10.1117/12.540750
Show Author Affiliations
Masaki Seguchi, Mitsubishi Electric Corp. (Japan)
Shuichi Fujikawa, Mitsubishi Electric Corp. (Japan)
Tetsuo Kojima, Mitsubishi Electric Corp. (Japan)
Keisuke Furuta, Mitsubishi Electric Corp. (Japan)
Yushi Takenaka, Mitsubishi Electric Corp. (Japan)
Jun-ichi Nishimae, Mitsubishi Electric Corp. (Japan)

Published in SPIE Proceedings Vol. 5063:
Fourth International Symposium on Laser Precision Microfabrication
Isamu Miyamoto; Andreas Ostendorf; Koji Sugioka; Henry Helvajian, Editor(s)

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