title: Ordering of azobenzenes by two-photon isomerization.
abstract: We report on light induced orientation by two-photon isomerization of azobenzenes in films of polymer. The dynamics of isomerization and orientation by one-photon absorption and two-photon absorption (TPA) are similar, and TPA creates a degree of molecular orientation which is comparable to that achieved by single-photon isomerization, in agreement with the theoretical predictions of two-photon isomeric orientation.
authors.affiliation: Nanophotonics Laboratory, RIKEN (The Institute of Physical and Chemical Research), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. ishitobi@riken.jp
authors.forename: Hidekazu
authors.initials: H
authors.lastname: Ishitobi
authors.forename: Zouheir
authors.initials: Z
authors.lastname: Sekkat
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kawata