Doppler shift generated by a moving diffraction grating under incidence by polychromatic diffuse light [PDF]
Appl. Opt., vol. 55, no. 15, pp. 3915-3924, 2016, 2016 We consider the spectral response of moving diffraction gratings, in which the incident light extends over a broad angular range and where the diffracted light is observed from a specific angle. We show that the dispersion relation between the frequency perceived by an observer who is looking at a moving grating and the incident frequency can exhibit ...
arxiv +1 more source
Towards polarizing beam splitters for cold neutrons using superparamagnetic diffraction gratings [PDF]
, 2012 For holographic gratings recorded in superparamagnetic nanoparticle-polymer composites the diffraction efficiency should -- next to grating spacing, nanoparticle concentration and grating thickness -- depend on the strength of an external magnetic field and the incident neutron spin state. As a consequence, diffraction gratings should be tunable to act
arxiv +1 more source
Comparison between Grating Imaging and Transient Grating Techniques on Measuring Carrier Diffusion in Semiconductor [PDF]
arXiv, 2018 Optical grating technique, where optical gratings are generated via light inference, has been widely used to measure charge carrier and phonon transport in semiconductors. In this paper, compared are three types of transient optical grating techniques: transient grating diffraction, transient grating heterodyne, and grating imaging, by utilizing them ...
arxiv
High-efficiency V-shaped phase gratings to suppress high order diffractions
AIP Advances, 2019 We propose a V-shaped phase grating to simultaneously improve the diffraction efficiency of the 1st order diffraction mode and suppression of high order modes.
Ziwei Liu +4 more
doaj +1 more source
Azimuthal modulation of electromagnetically induced grating using structured light
Scientific Reports, 2021 We propose a theoretical scheme for creating a two-dimensional Electromagnetically Induced Grating in a three-level $$\Lambda $$ Λ -type atomic system interacting with a weak probe field and two simultaneous position-dependent coupling fields—a two ...
Seyyed Hossein Asadpour +5 more
doaj +1 more source
Nanoscale Research Letters, 2019 In this study, a surface diffraction two-dimensional (2D) grating structure was placed on the topmost layer of distributed Bragg reflectors (DBRs) for biosensing.
Daohan Ge +6 more
doaj +1 more source
Characterization of diffractive bifocal intraocular lenses
Scientific Reports, 2023 Multifocal intraocular lenses incorporate a variety of design considerations, including dimensioning of the base monofocal shape and the diffraction grating.
Damian Mendroch +2 more
doaj +1 more source
Engineered asymmetric diffractions of diagonal-line odd-symmetric phase gratings
New Journal of Physics, 2023 A two-dimensional multi-element phase grating has been designed in terms of the offset refractive index to exhibit the spatially odd symmetry ( antisymmetry ) along one transparent diagonal line with an even number of rectangular elements while leaving ...
Shuo Hua +4 more
doaj +1 more source
Fraunhofer diffraction at the two-dimensional quadratically distorted (QD) Grating [PDF]
arXiv, 2017 A two-dimensional (2D) mathematical model of quadratically distorted (QD) grating is established with the principles of Fraunhofer diffraction and Fourier optics. Discrete sampling and bisection algorithm are applied for finding numerical solution of the diffraction pattern of QD grating.
arxiv
Measuring the orbital angular momentum of electron vortex beams using a forked grating [PDF]
, 2013 The present study experimentally examines how an electron vortex beam with orbital angular momentum (OAM) undergoes diffraction through a forked grating. The nth-order diffracted electron vortex beam after passing through a forked grating with a Burgers vector of 1 shows an OAM transfer of nh.
arxiv +1 more source