Ultrafast mid-infrared intra-excitonic response of individualized single-walled carbon nanotubes

Jigang Wang; Matt W. Graham; Yingzhong Ma; Graham R. Fleming; Robert A. Kaindl

Ultrafast mid-infrared intra-excitonic response of individualized single-walled carbon nanotubes

Jigang Wang, Matt W. Graham, Yingzhong Ma, Graham R. Fleming, Robert A. Kaindl

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We present femtosecond mid-infrared (mid-IR) studies of the broadband low-energy response of individualized (6,5) and (7,5) single-walled carbon nanotubes. Strong photoinduced absorption is observed in these semiconducting tubes around 200 meV photon energy. The transition energy and broadly sloping spectral shape are characteristic of quasi-1D intra-excitonic transitions between different relative-momentum states. Our result yields a value of the intra-excitonic absorption cross section of σMIR^|| ≈ 4 × 10^-15 cm².

Original language	English
Title of host publication	Ultrafast Processes in Materials Science
Pages	56-61
Number of pages	6
State	Published - 2010
Externally published	Yes
Event	2009 MRS Fall Meeting - Boston, MA, United States Duration: Nov 30 2009 → Dec 4 2009

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	1230
ISSN (Print)	0272-9172

Conference

Conference	2009 MRS Fall Meeting
Country/Territory	United States
City	Boston, MA
Period	11/30/09 → 12/4/09

Cite this

@inproceedings{65ec551e13f24bd2bc7deb2a64db072d,

title = "Ultrafast mid-infrared intra-excitonic response of individualized single-walled carbon nanotubes",

abstract = "We present femtosecond mid-infrared (mid-IR) studies of the broadband low-energy response of individualized (6,5) and (7,5) single-walled carbon nanotubes. Strong photoinduced absorption is observed in these semiconducting tubes around 200 meV photon energy. The transition energy and broadly sloping spectral shape are characteristic of quasi-1D intra-excitonic transitions between different relative-momentum states. Our result yields a value of the intra-excitonic absorption cross section of σMIR|| ≈ 4 × 10-15 cm2.",

author = "Jigang Wang and Graham, {Matt W.} and Yingzhong Ma and Fleming, {Graham R.} and Kaindl, {Robert A.}",

year = "2010",

language = "English",

isbn = "9781617387616",

series = "Materials Research Society Symposium Proceedings",

pages = "56--61",

booktitle = "Ultrafast Processes in Materials Science",

note = "2009 MRS Fall Meeting ; Conference date: 30-11-2009 Through 04-12-2009",

}

Ultrafast mid-infrared intra-excitonic response of individualized single-walled carbon nanotubes. / Wang, Jigang; Graham, Matt W.; Ma, Yingzhong et al.
Ultrafast Processes in Materials Science. 2010. p. 56-61 (Materials Research Society Symposium Proceedings; Vol. 1230).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Ultrafast mid-infrared intra-excitonic response of individualized single-walled carbon nanotubes

AU - Wang, Jigang

AU - Graham, Matt W.

AU - Ma, Yingzhong

AU - Fleming, Graham R.

AU - Kaindl, Robert A.

PY - 2010

Y1 - 2010

N2 - We present femtosecond mid-infrared (mid-IR) studies of the broadband low-energy response of individualized (6,5) and (7,5) single-walled carbon nanotubes. Strong photoinduced absorption is observed in these semiconducting tubes around 200 meV photon energy. The transition energy and broadly sloping spectral shape are characteristic of quasi-1D intra-excitonic transitions between different relative-momentum states. Our result yields a value of the intra-excitonic absorption cross section of σMIR|| ≈ 4 × 10-15 cm2.

AB - We present femtosecond mid-infrared (mid-IR) studies of the broadband low-energy response of individualized (6,5) and (7,5) single-walled carbon nanotubes. Strong photoinduced absorption is observed in these semiconducting tubes around 200 meV photon energy. The transition energy and broadly sloping spectral shape are characteristic of quasi-1D intra-excitonic transitions between different relative-momentum states. Our result yields a value of the intra-excitonic absorption cross section of σMIR|| ≈ 4 × 10-15 cm2.

UR - http://www.scopus.com/inward/record.url?scp=77957799252&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:77957799252

SN - 9781617387616

T3 - Materials Research Society Symposium Proceedings

SP - 56

EP - 61

BT - Ultrafast Processes in Materials Science

T2 - 2009 MRS Fall Meeting

Y2 - 30 November 2009 through 4 December 2009

ER -

Ultrafast mid-infrared intra-excitonic response of individualized single-walled carbon nanotubes

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