光学学报, 1985, 5 (7): 614, 网络出版: 2011-09-16
高效率KDP倍频晶体的精选
Selection of KDP doubling crystals with high conversion efficiencies
摘要
本文提出了用固有外失配角来表征由倍频晶体折射率不均匀性所产生的相位失配,并给出了对其进行高精度测量的方法,它能方便地、可靠地从已切割好的晶体中挑选出高转换效率的倍频晶体。
Abstract
The inherent external mismatching angle is used to represent the phase mismatching caused by inhomogeneity in refractive-indices of doubling crystals. A new method is presented that can measure this important parameter accurately. The small-signal conversion efficiency is measured under a laser intensity of about 20 MW/cm2. A reference KDP crystal is used to eliminate laser-induced fluctuations. The experimental data are compared with theory in determining the mismatching angle of crystals, Δθc, as listed in Tables II,III, Among doubling crystals those with high conversion efficiencies can thus be selected readily. For some of then L, the high conversion efficiencies have been born out experimentally.
蔡希洁, 覃文骅, 叶曦, 陆瑞熙. 高效率KDP倍频晶体的精选[J]. 光学学报, 1985, 5(7): 614. CAI XIJIE, QIN WENGHUA, JE XI, LU RIEIXI. Selection of KDP doubling crystals with high conversion efficiencies[J]. Acta Optica Sinica, 1985, 5(7): 614.