FEMTOSECOND CASCADE-EXCITATION SPECTROSCOPY FOR NONRADIATIVE DEEXCITATION AND LATTICE-RELAXATION OF THE SELF-TRAPPED EXCITON IN NACL

被引：79

作者：

TOKIZAKI, T ^{[1
]}

MAKIMURA, T ^{[1
]}

AKIYAMA, H ^{[1
]}

NAKAMURA, A ^{[1
]}

TANIMURA, K ^{[1
]}

ITOH, N ^{[1
]}

机构：

[1] NAGOYA UNIV,FAC SCI,DEPT PHYS,FURO,CHIKUSA 46401,JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.67.2701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Optical-absorption change following photoexcitation of the lowest triplet self-trapped exciton (STE) in NaCl has been measured in the femtosecond time regime. It is found that a short-lived intermediate state is generated within 1 ps and decays accompanied by restoration of the lowest STE. An oscillation in the population of the lowest STE and the intermediate state with a period of 1.1 ps was observed. Formation of Frenkel pairs has been found to occur not at the initial stage of relaxation but as a result of the relaxation leading to the lowest STE.

引用

页码：2701 / 2704

页数：4

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