Excitonic dynamical Franz-Keldysh effect

被引：195

作者：

Nordstrom, KB ^{[1
]}

Johnsen, K

Allen, SJ

Jauho, AP

Birnir, B

Kono, J

Noda, T

Akiyama, H

Sakaki, H

机构：

[1] Univ Calif Santa Barbara, Quantum Inst, Ctr Terahertz Sci & Technol, Santa Barbara, CA 93106 USA

[2] Tech Univ Denmark, Mikroelekt Ctr, DK-2800 Lyngby, Denmark

[3] Univ Calif Santa Barbara, Dept Math, Santa Barbara, CA 93106 USA

[4] Japan Sci & Technol Corp, Quantum Transit Project, Tokyo 153, Japan

[5] Univ Tokyo, Inst Ind Sci, Tokyo 106, Japan

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.81.457

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The dynamical Franz-Keldysh effect is exposed by exploring near-band-gap absorption in the presence of intense THz electric fields. It bridges the gap between the de Franz-Keldysh effect and multiphoton absorption and competes with the THz ac Stark effect in shifting the energy of the excitonic resonance. A theoretical model which includes the strong THz field nonperturbatively via a nonequilibrium Green functions technique is able to describe the dynamical Franz-Keldysh effect in the presence of excitonic absorption.

引用

页码：457 / 460

页数：4

共 15 条

[1] AC-STARK EFFECT AND MULTIPHOTON PROCESSES IN ATOMS [J].