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2022-07-11T04:54:53Z
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Anomalous exciton spectra of laser-driven semiconductor superlattices
Yashima, Kenta
Oka, Kotaro
Hino, Ken-ichi
日野, 健一
ヒノ, ケンイチ
Maeshima, Nobuya
前島, 展也
マエシマ,ノブヤ
Tong, Xiao Min
仝, 暁民
トン, ショウミン
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 article
Elsevier Ltd.
2009-06
application/pdf
Solid state communications
21-22
149
823
826
http://hdl.handle.net/2241/103158
0038-1098
AA00844573
https://tsukuba.repo.nii.ac.jp/record/17981/files/SSC_149-21-22.pdf
eng
https://doi.org/10.1016/j.ssc.2009.03.025
© 2009 Elsevier Ltd.
open access