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Proceedings Paper

Experiment and design of near-diffraction-limited cw and Q-cw Yb:YAG microchip lasers
Author(s): Ping Yan; Haisheng Wu; Mali Gong; Qiang Liu; Ruizhen Cui; Weipu Jia
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Paper Abstract

In order to get diffraction-limited beam by Yb:YAG microchip laser, a simple design rule for laser diode (LD) pumped Yb:YAG laser by using M2 factor is presented. The validity of this model is demonstrated by LD pumped CW and QCW Yb:YAG microchip laser experiments. High pump intensity and mode matching between pump and lasing are considered in the end-pumped quasi-three-level microchip laser system. The pumping intensity distributions in laser chip with different pump beam M2 factor and different doped crystal are shown. Experimental setup and results of the established LD end-pumped CW and QCW Yb:YAG microchip lasers are presented. Near diffraction—limited beam is achieved with 40% slop efficiency at 1.049jtm output wavelength. In QCW mode, 16.4µJ pulse energy with TEM00 mode is measured at the repetition rate of 100Hz. The laser pulse relaxation processing and laser pulse width agree with the theoretical results.

Paper Details

Date Published: 5 September 2002
PDF: 8 pages
Proc. SPIE 4914, High-Power Lasers and Applications II, (5 September 2002); doi: 10.1117/12.481756
Show Author Affiliations
Ping Yan, Tsinghua Univ. (China)
Haisheng Wu, Tsinghua Univ. (China)
Mali Gong, Tsinghua Univ. (China)
Qiang Liu, Tsinghua Univ. (China)
Ruizhen Cui, Tsinghua Univ. (China)
Weipu Jia, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 4914:
High-Power Lasers and Applications II
Dianyuan Fan; Keith A. Truesdell; Koji Yasui, Editor(s)

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