title: Broadband diffraction management and self-collimation of white light in photonic lattices.
abstract: We introduce periodic photonic structures where the strength of diffraction can be managed in a very broad frequency range. We show how to design arrays of curved waveguides where light beams experience wavelength-independent normal, anomalous, or zero diffraction. Our results suggest opportunities for efficient self-collimation, focusing, and reshaping of beams produced by white-light and supercontinuum sources. We also predict a possibility of multicolor Talbot effect, which is not possible in free space or conventional photonic lattices.
authors.affiliation: Nonlinear Physics Centre and Centre for Ultra-high bandwidth Devices for Optical Systems, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200, Australia.
authors.forename: Ivan L
authors.initials: IL
authors.lastname: Garanovich
authors.forename: Andrey A
authors.initials: AA
authors.lastname: Sukhorukov
authors.forename: Yuri S
authors.initials: YS
authors.lastname: Kivshar