Anomalous exciton spectra of laser-driven semiconductor superlattices

• Yashima, Kenta

• Oka, Kotaro

• Hino, Ken-ichi

• Maeshima, Nobuya

• Tong, Xiao Min

Abstract

The quasienergy structure of excitonic Floquet states of laser-driven semiconductor superlattices is examined. To understand the detail of it, linear absorption spectra of optical interband transitions invoked by an alternative monochromatic probe laser are calculated based on the Liouvílle equation. It is found that for a strong driving laser, the interminiband interaction, namely, the ac-Zener tunneling, causes a red shift of the spectral peak pertaining to the 1s-exciton Floquet state, and enlarges the intensity of its concomitant replica bands. In particular, it is noted that one of the replicas exhibits an anomalous negative absorption.

Journal

• Solid state communications

  Solid state communications 149 (21-22), 823-826, 2009-06

  Elsevier Ltd.

Details

• CRID: 1050001202631718400
• NII Article ID: 120007131555
• NII Book ID: AA00844573
• HANDLE: 2241/103158
• ISSN: 00381098
• Web Site: https://tsukuba.repo.nii.ac.jp/records/17981
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • CiNii Articles