title: Design and experimental investigation of highly efficient resonance-domain diffraction gratings in the visible spectral region.
abstract: Surface-relief resonance-domain diffraction gratings with deep and dense grooves provide considerable changes in light propagation direction, wavefront curvature, and nearly 100% Bragg diffraction efficiency usually attributed only to volume optical holograms. In this paper, we present design, computer simulation, fabrication, and experimental results of binary resonance-domain diffraction gratings in the visible spectral region. Performance of imperfectly fabricated diffraction groove profiles was optimized by controlling the DC and the depth of the grooves. Indeed, more than 97% absolute Bragg diffraction efficiency was measured at the 635 nm wavelength with binary gratings having periods of 520 nm and groove depths of about 1000 nm, fabricated by direct electron-beam lithography and reactive ion etching.
authors.affiliation: Department of Electrical Engineering, Tel Aviv University, Tel Aviv 69978, Israel. omribarlev@gmail.com
authors.forename: Omri
authors.initials: O
authors.lastname: Barlev
authors.forename: Michael A
authors.initials: MA
authors.lastname: Golub
authors.forename: Asher A
authors.initials: AA
authors.lastname: Friesem
authors.forename: Menachem
authors.initials: M
authors.lastname: Nathan
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008962:Models, Theoretical; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation