Franzen D L
Appl Opt. 1975 Mar 1;14(3):647-52. doi: 10.1364/AO.14.000647.
Beam splitters for 10-mum lasers are discussed and then applied to the precision measurement of high average powers. In particular, beam splitter stability has been investigated in various materials over the 20-600-W power range with power densities up to 1 kW/cm(2). The absolute beam splitter ratios are given along with the achieved measurement precisions. The semiconductors investigated were GaAs, CdTe, and ZnSe in addition to one alkali-halide KCl. Standard deviations for the beam splitter ratios of 1% over the power range were typical. Absolute ratios agree with the predictions from Fresnel's equations to 1% or better. The best measurement was made on ZnSe when a standard deviation of 0.4% was obtained for the measurement of a ratio that agreed with a calculation from Fresnel's equations to better than 0.5%.
讨论了用于10微米激光器的分束器，然后将其应用于高平均功率的精确测量。特别地，在功率范围为20 - 600瓦、功率密度高达1千瓦/平方厘米的情况下，研究了各种材料中分束器的稳定性。给出了绝对分束比以及所达到的测量精度。除了一种碱金属卤化物KCl外，所研究的半导体还有GaAs、CdTe和ZnSe。在整个功率范围内，分束比的标准偏差通常为1%。绝对比率与菲涅耳方程的预测结果相符，误差在1%或更小。对ZnSe进行的测量效果最佳，在测量一个与菲涅耳方程计算结果相符且误差优于0.5%的比率时，获得了0.4%的标准偏差。
