Ultrafast optical Kerr effect of excitons weakly confined in GaAs thin films

Atsushi Kanno; Redouane Katouf; Osamu Kojima; Junko Ishi-Hayase; Masahiro Tsuchiya; Toshiro Isu

doi:10.1002/pssc.200776528

Ultrafast optical Kerr effect of excitons weakly confined in GaAs thin films

Atsushi Kanno, Redouane Katouf, Osamu Kojima, Junko Ishi-Hayase, Masahiro Tsuchiya, Toshiro Isu

Research output: Contribution to journal › Conference article › peer-review

2 Citations (Scopus)

Abstract

We investigate ultrafast response of optical Kerr effect (OKE) induced by excitons weakly confined in GaAs thin films. The observed decay time of optical response agrees approximately with incident pulse duration. At 100-fs pulse irradiation the response time is estimated to be 170 fs, though the exciton lifetime is about 10 ns. It is considered that the ultrafast response of OKE is caused by not population relaxation but orientation relaxation of excitons.

Original language	English
Pages (from-to)	360-363
Number of pages	4
Journal	Physica Status Solidi (C) Current Topics in Solid State Physics
Volume	5
Issue number	1
DOIs	https://doi.org/10.1002/pssc.200776528
Publication status	Published - 2008 Jun 30
Externally published	Yes
Event	15th International Conference on Nonequilibrium Carrier Dynamics in Semiconductors, HCIS15 - Tokyo, Japan Duration: 2007 Jul 23 → 2007 Jul 27

ASJC Scopus subject areas

Condensed Matter Physics

Access to Document

10.1002/pssc.200776528

Cite this

@article{e744f709d0cb45c7b365656ccd4decce,

title = "Ultrafast optical Kerr effect of excitons weakly confined in GaAs thin films",

abstract = "We investigate ultrafast response of optical Kerr effect (OKE) induced by excitons weakly confined in GaAs thin films. The observed decay time of optical response agrees approximately with incident pulse duration. At 100-fs pulse irradiation the response time is estimated to be 170 fs, though the exciton lifetime is about 10 ns. It is considered that the ultrafast response of OKE is caused by not population relaxation but orientation relaxation of excitons.",

author = "Atsushi Kanno and Redouane Katouf and Osamu Kojima and Junko Ishi-Hayase and Masahiro Tsuchiya and Toshiro Isu",

year = "2008",

month = jun,

day = "30",

doi = "10.1002/pssc.200776528",

language = "English",

volume = "5",

pages = "360--363",

journal = "Physica Status Solidi C: Conferences",

issn = "1862-6351",

publisher = "Wiley-VCH Verlag",

number = "1",

note = "15th International Conference on Nonequilibrium Carrier Dynamics in Semiconductors, HCIS15 ; Conference date: 23-07-2007 Through 27-07-2007",

}

TY - JOUR

T1 - Ultrafast optical Kerr effect of excitons weakly confined in GaAs thin films

AU - Kanno, Atsushi

AU - Katouf, Redouane

AU - Kojima, Osamu

AU - Ishi-Hayase, Junko

AU - Tsuchiya, Masahiro

AU - Isu, Toshiro

PY - 2008/6/30

Y1 - 2008/6/30

N2 - We investigate ultrafast response of optical Kerr effect (OKE) induced by excitons weakly confined in GaAs thin films. The observed decay time of optical response agrees approximately with incident pulse duration. At 100-fs pulse irradiation the response time is estimated to be 170 fs, though the exciton lifetime is about 10 ns. It is considered that the ultrafast response of OKE is caused by not population relaxation but orientation relaxation of excitons.

AB - We investigate ultrafast response of optical Kerr effect (OKE) induced by excitons weakly confined in GaAs thin films. The observed decay time of optical response agrees approximately with incident pulse duration. At 100-fs pulse irradiation the response time is estimated to be 170 fs, though the exciton lifetime is about 10 ns. It is considered that the ultrafast response of OKE is caused by not population relaxation but orientation relaxation of excitons.

UR - http://www.scopus.com/inward/record.url?scp=45749155551&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=45749155551&partnerID=8YFLogxK

U2 - 10.1002/pssc.200776528

DO - 10.1002/pssc.200776528

M3 - Conference article

AN - SCOPUS:45749155551

SN - 1862-6351

VL - 5

SP - 360

EP - 363

JO - Physica Status Solidi C: Conferences

JF - Physica Status Solidi C: Conferences

IS - 1

T2 - 15th International Conference on Nonequilibrium Carrier Dynamics in Semiconductors, HCIS15

Y2 - 23 July 2007 through 27 July 2007

ER -

Ultrafast optical Kerr effect of excitons weakly confined in GaAs thin films

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this