Wave-optics simulation of grating-based X-ray phase-contrast imaging using 4D Mouse Whole Body (MOBY) phantom.
Sign Up to like & getrecommendations! Published in 2020 at "Medical physics"
DOI: 10.1002/mp.14479
Abstract: PURPOSE Demonstrate realistic simulation of grating-based X-ray phase-contrast imaging (GB-XPCI) using wave optics and the 4D Mouse Whole Body (MOBY) phantom defined with non-uniform rational B-splines (NURBS). METHODS We use a full-wave approach, which uses… read more here.
Keywords: phase; contrast; optics; moby phantom ... See more keywords
Ray and wave optics in twisted graphene nanoribbons
Sign Up to like & getrecommendations! Published in 2025 at "Physica Scripta"
DOI: 10.1088/1402-4896/addf19
Abstract: We investigate ray trajectories and wave propagation on a continuous helicoidal surface describing twisted graphene nanoribbons (TGNRs), treating the surface as a distortion-free structure and neglecting lattice discreteness and variations in hopping parameters. This low-dimensional… read more here.
Keywords: optics; twisted graphene; ray wave; graphene nanoribbons ... See more keywords
Wave optics on helicoidal graphene nanoribbons
Sign Up to like & getrecommendations! Published in 2025 at "Physica Scripta"
DOI: 10.1088/1402-4896/adfe2d
Abstract: We present an exact theoretical investigation of the optical properties of helicoidal graphene nanoribbons (GNRs) by deriving the spatial and frequency-dependent refractive index n(ξ,ω˜) within the continuum medium approximation. The Helmholtz equation is formulated on… read more here.
Keywords: optics helicoidal; optics; graphene nanoribbons; wave optics ... See more keywords
Wave effects in the microlensing of pulsars and FRBs by point masses
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa2230
Abstract: Wave effects are often neglected in microlensing studies; however, for coherent point-like sources, such as pulsars and fast radio bursts (FRBs), wave effects will become important in their gravitational lensing. In this paper, we describe… read more here.
Keywords: optics regime; point; optics; wave optics ... See more keywords
Invariance transformations in wave-optics lensing: Implications for gravitational-wave astrophysics and cosmology
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review D"
DOI: 10.1103/physrevd.110.123015
Abstract: Gravitational lensing offers unique opportunities to learn about the astrophysical origin of distant sources, the abundance of intervening objects acting as lenses, and gravity and cosmology in general. However, all this information can only be… read more here.
Keywords: invariance transformations; optics; astrophysics; cosmology ... See more keywords
Born approximation in wave optics of gravitational lensing revisited
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review D"
DOI: 10.1103/physrevd.111.083541
Abstract: The information about lensed gravitational waves is encapsulated by an amplification factor, which is calculated by an integration of an oscillatory function. The Born approximation, which has been studied in terms of wave optics in… read more here.
Keywords: gravitational lensing; optics gravitational; optics; wave optics ... See more keywords
Compensation of heat load deformations using adaptive optics for the ALS upgrade: a wave optics study.
Sign Up to like & getrecommendations! Published in 2020 at "Journal of synchrotron radiation"
DOI: 10.1107/s1600577520009522
Abstract: A realistic wave optics simulation method has been developed to study how wavefront distortions originating from heat load deformations can be corrected using adaptive X-ray optics. Several planned soft X-ray and tender X-ray insertion-device beamlines… read more here.
Keywords: load deformations; heat load; optics; wave optics ... See more keywords
Fresnel spatial filtering of quasihomogeneous sources for wave optics simulations
Sign Up to like & getrecommendations! Published in 2017 at "Optical Engineering"
DOI: 10.1117/1.oe.56.8.083107
Abstract: High-spatial-frequency optical fields or sources are often encountered when simulating directed energy, active imaging, or remote sensing systems and scenarios. These spatially broadband fields are a challenge in wave optics simulations because the sampling required… read more here.
Keywords: spatial filtering; source; optics; wave optics ... See more keywords