title: Tunable resonance-domain diffraction gratings based on electrostrictive polymers.
abstract: Critical combination of high diffraction efficiency and large diffraction angles can be delivered by resonance-domain diffractive optics with high aspect ratio and wavelength-scale grating periods. To advance from static to electrically tunable resonance-domain diffraction grating, we resorted to its replication onto 2-5 μm thick P(VDF-TrFE-CFE) electrostrictive ter-polymer membranes. Electromechanical and optical computer simulations provided higher than 90% diffraction efficiency, a large continuous deflection range exceeding 20°, and capabilities for adiabatic spatial modulation of the grating period and slant. A prototype of the tunable resonance-domain diffraction grating was fabricated in a soft-stamp thermal nanoimprinting process, characterized, optically tested, and provided experimental feasibility proof for the tunable sub-micron-period gratings on electrostrictive polymers.
authors.forename: Ramon
authors.initials: R
authors.lastname: Axelrod
authors.forename: Yosi
authors.initials: Y
authors.lastname: Shacham-Diamand
authors.forename: Michael A
authors.initials: MA
authors.lastname: Golub