Nonlinear spectroscopy using intense THz pulses with amplitudes exceeding 1 MV/cm

Author

Tanaka, Koichiro

Author_Institution

Inst. for Integrated Cell-Mater. Sci., Kyoto Univ., Kyoto, Japan

fYear

2011

fDate

22-26 May 2011

Firstpage

1

Lastpage

1

Abstract

This talk focused on THz nonlinear optical phenomena in semiconductors using intense THz pulses with amplitudes exceeding 1 MV/cm. Strong spectral modulations in the heavy-hole and light-hole exciton absorption band in ZnSe/ZnMgSSe multiple-quantum-well (MQW) structure induced by intense THz electric field are observed. The peak-shift of exciton absorption clearly indicates deviation from the Stark effect, which implies that the interaction between exciton and THz wave enters the non-perturbative regime. These results indicate that AC Stark effect and dynamical Franz Keldysh effect should be competed in this field strength around E_THz = 10 KV/cm.

Keywords

II-VI semiconductors; Stark effect; excitons; magnesium compounds; semiconductor quantum wells; sulphur compounds; zinc compounds; Stark effect; ZnSe-ZnMgSSe; dynamical Franz Keldysh effect; heavy hole exciton absorption band; intense THz pulses; light hole exciton absorption band; multiple quantum well structure; nonlinear spectroscopy; spectral modulations; Adaptive optics; Electric fields; Excitons; Ionization; Quantum well devices; Semiconductor optical amplifiers; Stimulated emission;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Europe (CLEO EUROPE/EQEC), 2011 Conference on and 12th European Quantum Electronics Conference

Conference_Location

Munich

ISSN

Pending

Print_ISBN

978-1-4577-0533-5

Electronic_ISBN

Pending

Type

conf

DOI

10.1109/CLEOE.2011.5942521

Filename

5942521