We have investigated the electroabsorption of aligned micelle-wrapped single-walled carbon nanotubes induced by intense terahertz (THz) pulses by using THz-pump and optical-probe spectroscopy at room temperature. The electroabsorption signal is enhanced at exciton resonances near the optical communication wavelength. The signal showed a quadratic dependence on the THz electric field and instantaneously followed the THz oscillation (1ps). The observed ultrafast electro-optic modulation with a THz bandwidth suggests the potential functionality of carbon nanotubes in high-speed electro-optic devices.

1.
R.
Saito
,
G.
Dresselhaus
, and
M. S.
Dresselhaus
,
Physical Properties of Carbon Nanotubes
(
Imperial College Press
,
London
,
1998
).
2.
T.
Ando
,
J. Phys. Soc. Jpn.
66
,
1066
(
1997
).
3.
C. D.
Spataru
,
S.
Ismail-Beigi
,
L. X.
Benedict
, and
S. G.
Louie
,
Phys. Rev. Lett.
92
,
077402
(
2004
).
4.
F.
Wang
,
G.
Dukovic
,
L. E.
Brus
, and
T. F.
Heinz
,
Science
308
,
838
(
2005
).
5.
J.
Maultzsch
,
R.
Pomraenke
,
S.
Reich
,
E.
Chang
,
D.
Prezzi
,
A.
Ruini
,
E.
Molinari
,
M. S.
Strano
,
C.
Thomsen
, and
C.
Lienau
,
Phys. Rev. B
72
,
241402
(
2005
).
6.
P.
Avouris
,
M.
Freitag
, and
V.
Perebeinos
,
Nat. Photonics
2
,
341
(
2008
).
7.
V.
Perebeinos
and
P.
Avouris
,
Nano Lett.
7
,
609
(
2007
).
8.
Z.
Wu
,
Z.
Chen
,
X.
Du
,
J. M.
Logan
,
J.
Sippel
,
M.
Nikolou
,
K.
Kamaras
,
J. R.
Reynolds
,
D. B.
Tanner
,
A. F.
Hebard
, and
A. G.
Rinzler
,
Science
305
,
1273
(
2004
).
9.
T.
Takenobu
,
Y.
Murayama
, and
Y.
Iwasa
,
Appl. Phys. Lett.
89
,
263510
(
2006
).
10.
H.
Kishida
,
Y.
Nagasawa
,
S.
Imamura
, and
A.
Nakamura
,
Phys. Rev. Lett.
100
,
097401
(
2008
).
11.
F.
Wang
,
M. E.
Itkis
, and
R. C.
Haddon
,
Nano Lett.
10
,
937
(
2010
).
12.
M.
Freitag
,
M.
Steiner
,
A.
Naumov
,
J. P.
Small
,
A. A.
Bol
,
V.
Perebeinos
, and
P.
Avouris
,
ACS Nano
3
,
3744
(
2009
).
13.
B.
Kitiyanan
,
W. E.
Alvarez
,
J. H.
Harwell
, and
D. E.
Resasco
,
Chem. Phys. Lett.
317
,
497
(
2000
).
14.
S. M.
Bachilo
,
L.
Balzano
,
J. E.
Herrera
,
F.
Pompeo
,
D. E.
Resasco
, and
R. B.
Weisman
,
J. Am. Chem. Soc.
125
,
11186
(
2003
).
15.
Y.
Kim
,
N.
Minami
, and
S.
Kazaoui
,
Appl. Phys. Lett.
86
,
073103
(
2005
).
16.
N.
Minami
,
Y. J.
Kim
,
K.
Miyashita
,
S.
Kazaoui
, and
B.
Nalini
,
Appl. Phys. Lett.
88
,
093123
(
2006
).
17.
J.
Hebling
,
K. -L.
Yeh
,
M. C.
Hoffmann
,
B.
Bartal
, and
K. A.
Nelson
,
J. Opt. Soc. Am. B
25
,
B6
(
2008
).
18.
Q.
Wu
and
X. -C.
Zhang
,
Appl. Phys. Lett.
68
,
1604
(
1996
).
19.
Y.
Berozashvili
,
S.
Makchavariani
,
A.
Natsvilishvili
, and
A.
Chirakadze
,
J. Phys. D
22
,
682
(
1989
).
20.
This value corresponds to the E-field outside the film. The value inside the film should be multiplied by the amplitude transmittance coefficient of the film, t1.3.
21.
J. D.
Dow
and
D.
Redfield
,
Phys. Rev. B
1
,
3358
(
1970
).
22.
D. A. B.
Miller
,
D. S.
Chemla
,
T. C.
Damen
,
A. C.
Gossard
,
W.
Wiegmann
,
T. H.
Wood
, and
C. A.
Burrus
,
Phys. Rev. B
32
,
1043
(
1985
).
23.
Here we used the calculated reduced mass, mex=Δ/2vF2, where vF=106m/s is the Fermi velocity and Δ0.59eV is half of the single particle gap for the (6,5) nanotube, after Ref. 12.
24.
S.
Schmitt-Rink
,
D. S.
Chemla
,
W. H.
Knox
, and
D. A. B.
Miller
,
Opt. Lett.
15
,
60
(
1990
).
25.
B.
Fluegel
,
N.
Peyghambarian
,
G.
Olbright
,
M.
Lindberg
,
S. W.
Koch
,
M.
Joffre
,
D.
Hulin
,
A.
Migus
, and
A.
Antonetti
,
Phys. Rev. Lett.
59
,
2588
(
1987
).
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