title: Unidirectional transmission in photonic-crystal gratings at beam-type illumination.
authors.affiliation: Nanotechnology Research Center, Department of Physics, Department of Electrical and Electronics Engineering, Bilkent University, 06800 Ankara, Turkey. atilla@ee.bilkent.edu.tr
authors.forename: Atilla Ozgur
authors.initials: AO
authors.lastname: Cakmak
authors.forename: Evrim
authors.initials: E
authors.lastname: Colak
authors.forename: Andriy E
authors.initials: AE
authors.lastname: Serebryannikov
authors.forename: Ekmel
authors.initials: E
authors.lastname: Ozbay