title: 99% efficiency measured in the -1st order of a resonant grating.
abstract: A resonant diffraction grating comprising a mirror, a dielectric layer and a high index corrugation at the layer-air interface is shown to exhibit off-Littrow the record diffraction efficiency of 99% in the -1st reflected order at 1064 nm wavelength thanks to the excitation of a leaky mode of the layer. Such high figure is obtained by a grating 5 to 10 times shallower than in current attempts to realize high efficiency all-dielectric gratings.
authors.forename: N
authors.initials: N
authors.lastname: Destouches
authors.forename: A
authors.initials: A
authors.lastname: Tishchenko
authors.forename: J
authors.initials: J
authors.lastname: Pommier
authors.forename: S
authors.initials: S
authors.lastname: Reynaud
authors.forename: O
authors.initials: O
authors.lastname: Parriaux
authors.forename: S
authors.initials: S
authors.lastname: Tonchev
authors.forename: M
authors.initials: M
authors.lastname: Ahmed