1-kw high-beam-quality and highly efficient diode-pumped Nd:YAG rod laser

Masaki Seguchi; Shuichi Fujikawa; Keisuke Furuta; Yushi Takenaka; Koji Yasui

doi:10.1117/12.497940

3 March 2003 One kilowatt high-beam-quality and highly-efficient diode-pumped Nd:YAG rod laser

Masaki Seguchi, Shuichi Fujikawa, Keisuke Furuta, Yushi Takenaka, Koji Yasui

Proceedings Volume 4831, First International Symposium on High-Power Laser Macroprocessing; (2003) https://doi.org/10.1117/12.497940
Event: LAMP 2002: International Congress on Laser Advanced Materials Processing, 2002, Osaka, Japan

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).

Citation Download Citation

Masaki Seguchi, Shuichi Fujikawa, Keisuke Furuta, Yushi Takenaka, and Koji Yasui "One kilowatt high-beam-quality and highly-efficient diode-pumped Nd:YAG rod laser", Proc. SPIE 4831, First International Symposium on High-Power Laser Macroprocessing, (3 March 2003); https://doi.org/10.1117/12.497940

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