title: Femtosecond cubic optical nonlinearity of thin nickel films.
abstract: Transient pump-probe measurements of circular anisotropy in nickel films induced by 38-fs optical pulses show an instantaneous response that is related to the optical orientation of the spins of free electrons. Measurements in a sample of variable thickness, performed in both transmission and reflection, revealed that the surface significantly influences the degenerate cubic optical nonlinearity of the nickel films to a depth of approximately 4-5 nm into the bulk.
authors: P J
authors: PJ
authors: Bennett
authors: V
authors: V
authors: Albanis
authors: Y P
authors: YP
authors: Svirko
authors: N I
authors: NI
authors: Zheludev