Plasmon mode imaging of single gold nanorods.
We have investigated two-photon-induced photoluminescence images and spectra of single gold nanorods by using an apertured scanning near-field optical microscope. The observed PL spectrum of single gold nanorod can be explained by the radiative recombination of the electron-hole pair near the X and L symmetry points. PL images reveal characteristic features reflecting an eigenfunction of a specific plasmon mode as well as electric field distributions around the nanorod.
Institute for Molecular Science, Okazaki 444-8585, Japan.
Kohei
K
Imura
Tetsuhiko
T
Nagahara
Hiromi
H
Okamoto