Two- and three-photon spectroscopy of solids under high pressure

被引:16
作者
Reimann, K
机构
[1] Department of Physics, University of California at Berkeley, Berkeley
关键词
two-photon spectroscopy; three-photon spectroscopy; hydrostatic pressure; electronic band structure; excitons;
D O I
10.1080/08957959608240462
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The present article reviews measurements under hydrostatic pressure on the tetrahedrally-bonded semiconductors CuCl CuBr, ZnO, ZnS, ZnSe, ZnTe, Cds, and AgGaS2 by two-photon spectroscopy and on the alkali halides NaCl, KBr, KI, and RbI by two- and three-photon spectroscopy. IL is shown that these nonlinear techniques yield a much higher precision than linear spectroscopy in the determination of the pressure dependence of the electronic band gap. Additionally, it is often possible to determine the pressure dependence of ether parameters of the electronic band structure like exciton binding energy, spin-orbit coupling, crystal-held interaction, and Luttinger parameters. In the case of the alkali halides with their rather large band gaps there is a further advantage of three-photon spectroscopy, namely that pressure-cell windows need only be transparent for photons of one third of the band gap energy.
引用
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页码:73 / 93
页数:21
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