Saturable and reverse saturable absorption at longitudinal surface plasmon resonance (SPR) in gold nanorods have been observed using scan and transient absorption techniques with femtosecond laser pulses. At lower excitation irradiances, the wavelength dispersion of saturable absorption has been determined near the longitudinal mode of SPR with a recovery time determined to be a few ten picoseconds on the SPR resonance. With higher excitation irradiances, reverse saturable absorption occurs and becomes dominant. The underlying mechanisms are discussed. Such reversible saturable absorption makes Au NRs an ideal candidate for optical limiting applications.
REFERENCES
1.
Y. Y.
Yu
, S. S.
Chang
, C. L.
Lee
, and C. R. C.
Wang
, J. Phys. Chem. B
101
, 6661
(1997
).2.
Y.
Li
and M. A.
El-Sayed
, J. Phys. Chem. B
105
, 8938
(2001
).3.
M. B.
Mohamed
, V.
Volkov
, S.
Link
, and M. A.
El-Sayed
, Chem. Phys. Lett.
317
, 517
(2000
).4.
S.
Link
and M. A.
El-Sayed
, Annu. Rev. Phys. Chem.
54
, 331
(2003
).5.
M.
Kerker
, The Scattering of Light and Other Electromagnetic Radiation
(Academic
, New York, 1969
).6.
C. F.
Bohren
and D. R.
Huffman
, Absorption and Scattering of Light by Small Particles
(Wiley
, New York, 1983
).7.
U.
Kreibig
and M.
Vollmer
, Optical Properties of Metal Cluster
(Springer
, Berlin, 1995
).8.
A. N.
Shipway
, E.
Katz
, and I.
Willner
, ChemPhysChem
1
, 18
(2000
).9.
R.
West
, Y.
Wang
, and T.
Goodson
III, J. Phys. Chem. B
107
, 3419
(2003
).10.
L.
Francois
, M.
Mostafavi
, J.
Belloni
, J.-F.
Delouis
, J.
Delaire
, and P.
Feneyrou
, J. Phys. Chem. B
104
, 6133
(2000
).11.
S. A.
Maier
, P. G.
Kik
, H. A.
Atwater
, S.
Meltzer
, E.
Harel
, B. E.
Koel
, and A. A. G.
Requicha
, Nat. Mater.
2
, 229
(2003
).12.
B.
Nikoobakht
and M. A.
El-Sayed
, Chem. Mater.
15
, 1957
(2003
).13.
N. R.
Jana
, L.
Gearheart
, and C. J.
Murphy
, J. Phys. Chem. B
105
, 4065
(2001
).14.
N. R.
Jana
, L.
Gearheart
, and C. J.
Murphy
, Adv. Mater. (Weinheim, Ger.)
13
, 1389
(2001
).15.
J.
Yang
, J.
Wu
, Y.
Wu
, J.
Wang
, and C.
Chen
, Chem. Phys. Lett.
416
, 215
(2005
).16.
M.
Sheik-Bahae
, A. A.
Said
, T.
Wei
, D. J.
Hagan
, and E. W.
Van Stryland
, IEEE J. Quantum Electron.
26
, 760
(1990
).17.
W.
Schrof
, S.
Rozouvan
, E.
Van Keuren
, D.
Horn
, J.
Schmitt
, and G.
Decher
, Adv. Mater. (Weinheim, Ger.)
3
, 338
(1998
).18.
Y. B.
Band
, D. J.
Harter
, and R.
Bavli
, Chem. Phys. Lett.
126
, 280
(1986
).19.
S.
Link
, C.
Burda
, M. B.
Mohamed
, B.
Nikoobakht
, and M. A.
El-Sayed
, Phys. Rev. B
61
, 6086
(2000
).© 2006 American Institute of Physics.
2006
American Institute of Physics
You do not currently have access to this content.