Femtosecond near-field scanning optical microscopy study of molecular thin films.
A near-field scanning optical microscope has been combined with a two-colour time-resolved pump-probe measurement system. It has a noise-equivalent transmittance change of 5.0 x 10-5 for a probe pulse with an intensity of 30 nW. The system has been used for evaluating molecular thin films that have a domain structure, particularly for observing a gate action of the single domains. The results include key features to understand an origin of the domains and suggest that the film composition is uniform over a distance of several micrometres.
Kawashima
H
H
Electrotechnical Laboratory, Tsukuba, Ibaraki 305-8568, Japan. e9506@etl.go.jp
Furuki
M
M
Tatsuura
S
S
Tian
M
M
Sato
Y
Y
Pu
L S
LS
Tani
T
T