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讨论了在有限菲涅耳数时，稳定凹－凸腔的高功率激光造模特性，研究表明当稳定凹－凸腔工作在临近界稳区时，基模体积显著提高，具有良好的选模效果。
The properties of high-power laser with stable concave-convex cavity in finite Fresnel number are discussed. The results show that when stable concave-convex cavity works in the vicinity of steady boundary, the volume of base mold increases significantly, effect.