title: Optimal control of nonadiabatic alignment of rotationally cold N2 molecules with the feedback of degree of alignment.
abstract: Nonadiabatic alignment of rotationally cold N2 molecules is optimally controlled by shaping femtosecond pump pulses with the feedback of degree of alignment evaluated by an ion imaging technique. The alignment is optimized by doubly peaked pulses with approximately equal intensities. A doubly peaked pulse with an appropriate interval can be regarded as a single pulse with a center trough based on the considerations from both time and frequency domains, suggesting that the effective duration of a doubly peaked pulse rather than its structure is crucial to nonadiabatic molecular alignment.
authors.affiliation: Department of Physics, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan.
authors.forename: Takayuki
authors.initials: T
authors.lastname: Suzuki
authors.forename: Yu
authors.initials: Y
authors.lastname: Sugawara
authors.forename: Shinichirou
authors.initials: S
authors.lastname: Minemoto
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Sakai