Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
733114 | Optics & Laser Technology | 2007 | 7 Pages |
Abstract
Multi-mode rate equations have been developed to investigate mode competition in high-power acousto-optically Q-switched planar waveguide lasers. The mode competition arises from coupling effects and temporal losses in the transform between guided modes and free-space propagation. Pulse-to-pulse instability and temporal beam distortions are enlarged by mode competition when the laser works in the multi-mode regime. The influence of parasitic oscillation is also discussed. A Nd:YAG planar waveguide laser has been established with a folded hybrid/unstable resonator. A maximum average power of 83 W with a beam propagation factor Mx2×My2=1.2×1.4 is obtained. The theoretical simulation agrees well with the experimental observation.
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Authors
Jianqiu Xu, H.J. Baker, D.R. Hall,