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以高斯光束传输理论为基础,结合半导体激光器堆栈结构,建立了半导体激光器堆栈快轴方向光束传输理论模型,并引入单个半导体激光器阵列的发散角和指向性因子,对半导体激光器堆栈快轴方向光束质量计算方法进行了修正,最后通过实验对计算结果进行验证。结果显示,相对于实验测量值,该理论模型计算值的误差仅为2.14%,与修正前的计算误差24.16%和18.36%相比,在精度上有了很大程度的提高,因此,该方法可行,能更精确的反应堆栈快轴的光束质量。
Based on the theory of Gaussian beam transmission and combined with the stack structure of semiconductor laser, a theoretical model of beam transmission in fast axis direction of the semiconductor laser stack was established. The divergence angle and directivity of a single semiconductor laser array were introduced to measure the beam quality in the fast axis of the semiconductor laser stack The calculation method is modified. Finally, the calculation results are verified through experiments. The results show that compared with the experimental measurement, the error of the calculated value of the theoretical model is only 2.14%, which is greatly improved compared with the calculated error of 24.16% and 18.36% before correction. Therefore, this method Feasible, more accurate response stack fast beam beam quality.