Time-Resolved Terahertz Spectroscopy of Free Carrier Nonlinear Dynamics in Semiconductors

Time-Resolved Terahertz Spectroscopy of Free Carrier Nonlinear Dynamics in Semiconductors

Nonlinear dynamics of free carriers in direct bandgap semiconductors at terahertz (THz) frequencies is studied using the intense few-cycle source available at the Advanced Laser Light Source (ALLS). Techniques such as Z-scan and optical-pump/THz-probe are employed to explore nonlinear interactions i...

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Main Authors: G. Sharma, L. Razzari, F. H. Su, F. Blanchard, A. Ayesheshim, T. L. Cocker, L. V. Titova, H. C. Bandulet, T. Ozaki, J.-C. Kieffer, R. Morandotti, M. Reid, F. A. Hegmann
Format: Article
Language:English
Published: IEEE 2010-01-01
Series:IEEE Photonics Journal
Subjects:
Intervalley scattering
semiconductors
terahertz pulses
time-resolved terahertz spectroscopy
ultrafast nonlinear optics
z-scan
Online Access:https://ieeexplore.ieee.org/document/5467198/
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spelling doaj-c0f0f7fb2fe8414fbdd7d59f7e64142b2021-03-29T17:11:45ZengIEEEIEEE Photonics Journal1943-06552010-01-012457859210.1109/JPHOT.2010.20508735467198Time-Resolved Terahertz Spectroscopy of Free Carrier Nonlinear Dynamics in SemiconductorsG. Sharma0L. Razzari1F. H. Su2F. Blanchard3A. Ayesheshim4T. L. Cocker5L. V. Titova6H. C. Bandulet7T. Ozaki8J.-C. Kieffer9R. Morandotti10M. Reid11F. A. Hegmann12$^{1}$INRS-EMT, Advanced Laser Light Source, Université du Québec, Varennes, Canada$^{2}$Dipartimento di Elettronica, Università di Pavia, Pavia, Italy$^{3}$Department of Physics, University of Alberta, Edmonton, Canada$^{4}$Graduate School of Science, Kyoto University, Kyoto, JapanDept. of Phys., Univ. of Alberta, Edmonton, AB, CanadaDept. of Phys., Univ. of Alberta, Edmonton, AB, CanadaDept. of Phys., Univ. of Alberta, Edmonton, AB, CanadaAdv. Laser Light Source, Univ. du Quebec, Varennes, QC, CanadaAdv. Laser Light Source, Univ. du Quebec, Varennes, QC, CanadaAdv. Laser Light Source, Univ. du Quebec, Varennes, QC, CanadaAdv. Laser Light Source, Univ. du Quebec, Varennes, QC, Canada$^{5}$Department of Physics, University of Northern British Columbia, Prince George, CanadaDept. of Phys., Univ. of Alberta, Edmonton, AB, CanadaNonlinear dynamics of free carriers in direct bandgap semiconductors at terahertz (THz) frequencies is studied using the intense few-cycle source available at the Advanced Laser Light Source (ALLS). Techniques such as Z-scan and optical-pump/THz-probe are employed to explore nonlinear interactions in an n-doped InGaAs thin film and a photoexcited GaAs sample, respectively. The physical mechanism that gives rise to such interactions is found to be intervalley scattering. A simple Drude-based mathematical model that incorporates the intervalley scattering process is developed and agrees well with the THz response of free carriers in semiconductors.https://ieeexplore.ieee.org/document/5467198/Intervalley scatteringsemiconductorsterahertz pulsestime-resolved terahertz spectroscopyultrafast nonlinear opticsz-scan
collection DOAJ
language English
format Article
sources DOAJ
author G. Sharma
L. Razzari
F. H. Su
F. Blanchard
A. Ayesheshim
T. L. Cocker
L. V. Titova
H. C. Bandulet
T. Ozaki
J.-C. Kieffer
R. Morandotti
M. Reid
F. A. Hegmann
spellingShingle G. Sharma
L. Razzari
F. H. Su
F. Blanchard
A. Ayesheshim
T. L. Cocker
L. V. Titova
H. C. Bandulet
T. Ozaki
J.-C. Kieffer
R. Morandotti
M. Reid
F. A. Hegmann
Time-Resolved Terahertz Spectroscopy of Free Carrier Nonlinear Dynamics in Semiconductors
IEEE Photonics Journal
Intervalley scattering
semiconductors
terahertz pulses
time-resolved terahertz spectroscopy
ultrafast nonlinear optics
z-scan
author_facet G. Sharma
L. Razzari
F. H. Su
F. Blanchard
A. Ayesheshim
T. L. Cocker
L. V. Titova
H. C. Bandulet
T. Ozaki
J.-C. Kieffer
R. Morandotti
M. Reid
F. A. Hegmann
author_sort G. Sharma
title Time-Resolved Terahertz Spectroscopy of Free Carrier Nonlinear Dynamics in Semiconductors
title_short Time-Resolved Terahertz Spectroscopy of Free Carrier Nonlinear Dynamics in Semiconductors
title_full Time-Resolved Terahertz Spectroscopy of Free Carrier Nonlinear Dynamics in Semiconductors
title_fullStr Time-Resolved Terahertz Spectroscopy of Free Carrier Nonlinear Dynamics in Semiconductors
title_full_unstemmed Time-Resolved Terahertz Spectroscopy of Free Carrier Nonlinear Dynamics in Semiconductors
title_sort time-resolved terahertz spectroscopy of free carrier nonlinear dynamics in semiconductors
publisher IEEE
series IEEE Photonics Journal
issn 1943-0655
publishDate 2010-01-01
description Nonlinear dynamics of free carriers in direct bandgap semiconductors at terahertz (THz) frequencies is studied using the intense few-cycle source available at the Advanced Laser Light Source (ALLS). Techniques such as Z-scan and optical-pump/THz-probe are employed to explore nonlinear interactions in an n-doped InGaAs thin film and a photoexcited GaAs sample, respectively. The physical mechanism that gives rise to such interactions is found to be intervalley scattering. A simple Drude-based mathematical model that incorporates the intervalley scattering process is developed and agrees well with the THz response of free carriers in semiconductors.
topic Intervalley scattering
semiconductors
terahertz pulses
time-resolved terahertz spectroscopy
ultrafast nonlinear optics
z-scan
url https://ieeexplore.ieee.org/document/5467198/
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