期刊
APPLIED PHYSICS LETTERS
卷 80, 期 16, 页码 2883-2885出版社
AMER INST PHYSICS
DOI: 10.1063/1.1471939
关键词
-
Two-photon absorption spectra due to the valence excitons in CaF2 and BaF2 have been measured using the second harmonic of the output of a XeCl-excimer-laser pumped dye laser as a light source. The band gap energies of CaF2 and BaF2 are obtained as 11.8 and 10.6 eV at 298 K, respectively. The two-photon absorption coefficient beta in the spectral region below the 2P exciton is expressed by an exponential function of the photon energy in both crystals. The values of beta at the 2P exciton peak are about 2x10(-9) cm/W for CaF2 and 3x10(-9) cm/W for BaF2. (C) 2002 American Institute of Physics.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据