title: Intensity-activated birefringence zero-crossing shift in CuAlSe(2) crystal.
abstract: We describe a new nonlinear-optical phenomenon called the intensity-activated birefringence zero-crossing shift. This phenomenon leads to the shift of the transmission curve of the gyrotropic isoindex spectral filter. The phenomenon was observed with 33-psec, 532-nm Nd(3+):YAG laser pulses in CuAlSe(2) semiconductor crystal. An anisotropic refractive-index nonlinearity with an approximately 200-psec switch-off time is responsible for the shift. Possible applications for light by light-control devices are discussed.
authors.forename: S V
authors.initials: SV
authors.lastname: Popov
authors.forename: A S
authors.initials: AS
authors.lastname: Semenikhin
authors.forename: V A
authors.initials: VA
authors.lastname: Tarasenko
authors.forename: N I
authors.initials: NI
authors.lastname: Zheludev
authors.forename: Y P
authors.initials: YP
authors.lastname: Svirko
authors.forename: L A
authors.initials: LA
authors.lastname: Makovetskaya