Gaussian output coupler and resonator geometry of confocal unstable resonator
- Chinese Academy of Science, Beijing (China). State Key Lab. of Molecular Reaction Dynamics
- North China Research Inst. of Electro-Optics, Beijing (China)
In this paper, the authors present a simple and easy-use geometrical approach for designing the unstable resonator of Nd:YAG laser with a Gaussian output coupler. An equivalent rear mirror, which formed a confocal resonator with the output coupler, was introduced to include the effects of rear mirror, the thermal focus of YAG rod and optical path of Q-switch. Numerical results were calculated for various couples of matching curvatures of rear mirror and output coupler under the confocal condition. The correspondent optimal spot sizes of the output coupler were also given. Couples of mirrors were selected according to theoretical parameters and applied to the experimental setup. A high-beam-quality output with Gaussian profile, and high efficiency of second harmonic generation were obtained. The experimental results were in good agreement with theoretical prediction.
- OSTI ID:
- 529675
- Report Number(s):
- CONF-9611124-; ISBN 0-8194-2290-8; TRN: IM9742%%164
- Resource Relation:
- Conference: SPIE photonics China `96, Beijing (China), 3-7 Nov 1996; Other Information: PBD: 1996; Related Information: Is Part Of High-power lasers: Solid state, gas, excimer, and other advanced lasers; Mei, S.S.; Truesdell, K.A. [eds.]; PB: 523 p.; Proceedings/SPIE, Volume 2889
- Country of Publication:
- United States
- Language:
- English
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