Optical stark effect of exciton in semiconducting single-walled carbon nanotubes

Shinji Matsumoto; Hiroyuki Matsui; Atsushi Maeda; Taishi Takenobu; Yoshihiro Iwasa; Yasumitsu Miyata; Hiromichi Kataura; Yutaka Maniwa; Hiroshi Okamoto

doi:10.1143/JJAP.45.L513

Optical stark effect of exciton in semiconducting single-walled carbon nanotubes

Shinji Matsumoto^*, Hiroyuki Matsui, Atsushi Maeda, Taishi Takenobu, Yoshihiro Iwasa, Yasumitsu Miyata, Hiromichi Kataura, Yutaka Maniwa, Hiroshi Okamoto

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

An instantaneous blue shift of exciton absorption due to the optical Stark effect was observed in isolated semiconducting single-walled carbon nanotubes (SWNTs) by using a femtosecond (fs) pump-probe spectroscopy. From the analysis of time profiles of transient absorption changes, the photoinduced shift and the dipole moment of the exciton transition were evaluated as ∼1.1 meV for the pump fluence of 34 μJ/cm² and ∼6 eÅ, respectively. Such a large dipole moment as well as ultrafast recovery of real carrier excitations suggests high potential of SWNTs for an ultrafast optical-switching material.

Original language	English
Journal	Japanese Journal of Applied Physics, Part 2: Letters
Volume	45
Issue number	20-23
DOIs	https://doi.org/10.1143/JJAP.45.L513
Publication status	Published - 2006 May 19
Externally published	Yes

Keywords

Carbon nanotube
Exciton
Femtosecond spectroscopy
Nonlinear optical response
Optical Stark effect

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1143/JJAP.45.L513

Cite this

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title = "Optical stark effect of exciton in semiconducting single-walled carbon nanotubes",

abstract = "An instantaneous blue shift of exciton absorption due to the optical Stark effect was observed in isolated semiconducting single-walled carbon nanotubes (SWNTs) by using a femtosecond (fs) pump-probe spectroscopy. From the analysis of time profiles of transient absorption changes, the photoinduced shift and the dipole moment of the exciton transition were evaluated as ∼1.1 meV for the pump fluence of 34 μJ/cm2 and ∼6 e{\AA}, respectively. Such a large dipole moment as well as ultrafast recovery of real carrier excitations suggests high potential of SWNTs for an ultrafast optical-switching material.",

keywords = "Carbon nanotube, Exciton, Femtosecond spectroscopy, Nonlinear optical response, Optical Stark effect",

author = "Shinji Matsumoto and Hiroyuki Matsui and Atsushi Maeda and Taishi Takenobu and Yoshihiro Iwasa and Yasumitsu Miyata and Hiromichi Kataura and Yutaka Maniwa and Hiroshi Okamoto",

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doi = "10.1143/JJAP.45.L513",

language = "English",

volume = "45",

journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",

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publisher = "Japan Society of Applied Physics",

number = "20-23",

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T1 - Optical stark effect of exciton in semiconducting single-walled carbon nanotubes

AU - Matsumoto, Shinji

AU - Matsui, Hiroyuki

AU - Maeda, Atsushi

AU - Takenobu, Taishi

AU - Iwasa, Yoshihiro

AU - Miyata, Yasumitsu

AU - Kataura, Hiromichi

AU - Maniwa, Yutaka

AU - Okamoto, Hiroshi

PY - 2006/5/19

Y1 - 2006/5/19

N2 - An instantaneous blue shift of exciton absorption due to the optical Stark effect was observed in isolated semiconducting single-walled carbon nanotubes (SWNTs) by using a femtosecond (fs) pump-probe spectroscopy. From the analysis of time profiles of transient absorption changes, the photoinduced shift and the dipole moment of the exciton transition were evaluated as ∼1.1 meV for the pump fluence of 34 μJ/cm2 and ∼6 eÅ, respectively. Such a large dipole moment as well as ultrafast recovery of real carrier excitations suggests high potential of SWNTs for an ultrafast optical-switching material.

AB - An instantaneous blue shift of exciton absorption due to the optical Stark effect was observed in isolated semiconducting single-walled carbon nanotubes (SWNTs) by using a femtosecond (fs) pump-probe spectroscopy. From the analysis of time profiles of transient absorption changes, the photoinduced shift and the dipole moment of the exciton transition were evaluated as ∼1.1 meV for the pump fluence of 34 μJ/cm2 and ∼6 eÅ, respectively. Such a large dipole moment as well as ultrafast recovery of real carrier excitations suggests high potential of SWNTs for an ultrafast optical-switching material.

KW - Carbon nanotube

KW - Exciton

KW - Femtosecond spectroscopy

KW - Nonlinear optical response

KW - Optical Stark effect

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DO - 10.1143/JJAP.45.L513

M3 - Article

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VL - 45

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

IS - 20-23

ER -

Optical stark effect of exciton in semiconducting single-walled carbon nanotubes

Abstract

Keywords

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