Two-photon spectroscopy on cold ortho-excitons in a stress trap in Cu2O crystals

被引：1

作者：

Naka, N ^{[1
]}

Nagasawa, N ^{[1
]}

机构：

[1] Univ Tokyo, Sch Sci, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

来源：

JOURNAL OF LUMINESCENCE | 2000年 / 87-9卷

关键词：

exciton; two-photon spectroscopy; stress-induced harmonic potential well; Cu2O;

D O I：

10.1016/S0022-2313(99)00261-6

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A stress-induced harmonic potential well for ortho-excitons in Cu2O is characterized by relevant emission spectra under resonant two-photon excitation at 1.6 K to develop a stress trap for the excitonic system. The spectra reveal that the excitons are really populated in stress-split sub-levels coexisting with the relevant resonant scattering. The mean kinetic energy of the excitons populated in the lower-lying sub-level is reduced when the excitons are selectively excited at the potential minimum. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：201 / 203

页数：3

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