title: Induced spatiotemporal modulation instability in a noninstantaneous self-defocusing medium.
abstract: We demonstrate theoretically and experimentally that induced spatiotemporal modulation instability can exist in a self-defocusing medium if the nonlinearity is noninstantaneous. We predict the growth rate as a function of the spatial and temporal frequencies of the modulation and the response time of the nonlinearity and confirm it by our experiments.
authors.affiliation: Department of Physics, National Taiwan University, Taipei 106, Taiwan.
authors.forename: Wen-Han
authors.initials: WH
authors.lastname: Chu
authors.forename: Chien-Chung
authors.initials: CC
authors.lastname: Jeng
authors.forename: Chao-Hsian
authors.initials: CH
authors.lastname: Chen
authors.forename: Yi-Hsin
authors.initials: YH
authors.lastname: Liu
authors.forename: Ming-Feng
authors.initials: MF
authors.lastname: Shih