Journal ArticleDOI
Paraxial-domain diffractive elements with 100% efficiency based on polarization gratings
Jani Tervo,Jari Turunen +1 more
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In this article, the concept of polarization freedom is employed to design diffraction gratings that are capable of transforming an electromagnetic plane wave into two or three diffraction orders with an arbitrary efficiency distribution among them, such that the combined efficiency of the signal orders is always equal to 100%.Abstract:
The concept of polarization freedom is employed to design diffraction gratings that are capable of transforming an electromagnetic plane wave into two or three diffraction orders with an arbitrary efficiency distribution among them, such that the combined efficiency of the signal orders is always equal to 100%. As a special case we consider paraxial-domain duplicators and triplicators with 100% efficiency, which is not possible for illumination by scalar waves: Diffractive elements that are capable of performing the required wave transformation must modulate the state of polarization of the incident field.read more
Citations
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Space-variant Pancharatnam-Berry phase optical elements with computer-generated subwavelength gratings.
TL;DR: A theoretical analysis and experimentally demonstrate a Pancharatnam-Berry phase-based diffraction grating for laser radiation at a wavelength of 10.6microm.
Journal ArticleDOI
A review of dielectric optical metasurfaces for wavefront control
TL;DR: In this article, a review of the recent developments in dielectric structures for shaping optical wavefronts is presented with an outlook on future potentials and challenges that need to be overcome.
Journal ArticleDOI
Achromatic diffraction from polarization gratings with high efficiency.
Chulwoo Oh,Michael J. Escuti +1 more
TL;DR: A broadband, thin-film, polarizing beam splitter based on an anisotropic diffraction grating composed of reactive mesogens (polymerizable liquid crystals) that manifests high diffraction efficiency and high extinction ratio in both theory and experiment.
Journal ArticleDOI
Liquid-crystal diffraction gratings using polarization holography alignment techniques
Gregory P. Crawford,James N. Eakin,Marc D. Radcliffe,Andrew Callan-Jones,Robert A. Pelcovits +4 more
TL;DR: In this paper, a method of patterning surfaces for liquid-crystal alignment using a polarization holography exposure on a linear photopolymerizable polymer alignment layer is demonstrated.
Journal ArticleDOI
Silicon nanofin grating as a miniature chirality-distinguishing beam-splitter
TL;DR: A planar dielectric chirality-distinguishing beam-splitter that deflects left- and right-circularly polarized beams into different directions and utilizes an achiral architecture to realize a chiralbeam-splitting functionality.
References
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Journal ArticleDOI
Measuring Stokes parameters by means of a polarization grating.
TL;DR: It is shown that, for a generic polarization state of the incident field, such a grating gives rise to first-order diffracted beams with counterrotating circular polarizations and can be used for measuring the Stokes parameters of a light beam in an achromatic manner.
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Upper bound of the diffraction efficiency of diffractive phase elements
TL;DR: An upper bound of the diffraction efficiency of diffractive elements that only influence the phase of the illumination wave is derived and is independent of the technique to design and fabricate the diffractive element.
Journal ArticleDOI
Analytical derivation of the optimum triplicator
Franco Gori,Massimo Santarsiero,S. Vicalvi,Riccardo Borghi,Gabriella Cincotti,E. Di Fabrizio,Massimo Gentili +6 more
TL;DR: The analytical derivation of the phase profile of a diffractive optical element that produces three equi-intense replicas of an input beam with the maximum efficiency is presented in this article.