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本文从探讨平凹腔的β(β=球面镜曲率半径/谐振腔腔长)值入手,分析了近似半球腔在提高功率输出稳定性方面存在的实际可能性’并引入双曲率凹凸镜输出结构以克服因此而引起的输出光束发散度的增大。经1983年全国250mm氦氖激光器产品质量评比表明,在本文理论分析指导下研制的新产品,在功率输出方位稳定性和功率输出时间稳定性这两项参数方面分别达到平均±2.6％与平均±0.9％的全国最好成绩,并接近和达到国际(均为±50％)水平。
In this paper, the value of β (β = spherical mirror radius of curvature / resonant cavity length) of a plano-concave cavity is discussed. The actual possibility of approximate hemispherical cavity in improving the power output stability is analyzed, and the output of the hyperbolic concavo-convex mirror This overcomes the resulting increase in output beam divergence. The quality evaluation of the national 250mm He-Ne laser products in 1983 shows that the new products developed under the theoretical analysis of this paper achieve an average of ± 2.6% and an average of ± 2% in the two parameters of the azimuth stability of power output and the power output time stability, respectively 0.9% of the national best score, and close to and reach the international (both ± 50%) level.