Thermally Determined Near Hemispherical Resonator for Diode-Pumped-Solid-State Laser
全固态激光器的热近半球面腔(英文)

The performance of the diode side-pumped plane-plane asymmetric resonator was investigated. Theory analysis shows that, when the resonator is operating at the boundary of the thermal stable region, the fundamental mode diameter in the rods quickly increases, which leads to the improvement of laser beam quality while maintaining a higher output power. Because the performance of this plane-plane asymmetric resonator operating at the boundary of the stable region is similar to that of a near hemispherical resonator, such resonator design is named as thermally determined near hemispherical resonator. Comparing with the design of a symmetric plane-plane resonator operating at the boundary of the thermal stable region, the thermally determined near hemispherical resonator design can be shorten the cavity length and is suitable to a low and middle power diode side-pumped resonator. The beam quality quick improvement and the output power saturation are experimentally observed in the thermally determined near hemispherical resonator. There is a good agreement between the theory analysis and the experiment results.