title: Enhancement of efficiency in photo-excitation to the triplet state by laser-pulse reshaping.
abstract: An optical system is proposed to enhance efficiency in photo-excitation to the triplet state by reshaping an original laser pulse into a train of pulses. This optical system can be used to improve the attainable nuclear spin polarization in dynamic nuclear polarization experiments using photo-excited triplet electron spins.
authors.affiliation: Division of Advanced Electronics and Optical Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan. takeda@qc.ee.es.osaka-u.ac.jp
authors.forename: Kazuyuki
authors.initials: K
authors.lastname: Takeda
authors.forename: Takeshi
authors.initials: T
authors.lastname: Yamamura
authors.forename: Akinori
authors.initials: A
authors.lastname: Kagawa
authors.forename: Masahiro
authors.initials: M
authors.lastname: Kitagawa