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Astigmatic Beam Tracing for Gtd/Utd Methods in 3-d cOmplex ...
https://www.researchgate.net/publication/237900766_Astigmatic_Beam_Tracing_for_GtdUtd_Methods_in_3-d_cOmplex_Environments#:~:text=Astigmatic%20Beam%20Tracing%20is%20a%20new%20method%20developed,handle%20multiple%20wedge%20diffraction%20%28Di%20Giampaolo%20et%20al.%29.
Astigmatic Beam Tracing for Gtd/Utd Methods in 3-d …
https://www.researchgate.net/publication/237900766_Astigmatic_Beam_Tracing_for_GtdUtd_Methods_in_3-d_cOmplex_Environments
Astigmatic Beam Tracing (ABT), a deterministic method based on ray tracing, can be applied to urban propagation modelling. ABT can handle multiple reflections and diffractions.
Preconditioned astigmatic beam tracing for urban ...
https://www.researchgate.net/publication/3428557_Preconditioned_astigmatic_beam_tracing_for_urban_propagation
Astigmatic Beam Tracing (ABT), a deterministic method based on ray tracing, can be applied to urban propagation modelling. ABT can handle multiple reflections and diffractions.
Generally astigmatic Gaussian beam representation …
https://resource.lumentum.com/s3fs-public/technical-library-items/skew-ray-gaussian-beam-optimization.pdf
I will first review the skew ray representations of circular and simply astigmatic Gaussian beams, then I will extend the representation to generally astigmatic systems. ... allows easy visualization of Gaussian beams on layout diagrams of ray-tracing software; an example is shown in Figure 1. Note that to convert l and m into the direction ...
A fast Gaussian beam tracing method for reflection and ...
https://www.sciencedirect.com/science/article/pii/S0030401803022120
Abstract. A fast Gaussian beam tracing method for general vectorial astigmatic Gaussian beams based on phase matching has been formulated. Given the parameters of a vectorial Gaussian beam in its principal coordinate system the parameters of the reflected and refracted beams from a general curved surface (with general constitutive parameters) are found.
Collimation of Astigmatic Diode Laser Beam by Objective Lens
https://www.lighttrans.com/fileadmin/shared/UseCases/Application_UC_Collimation%20of%20Astigmatic%20Diode%20Laser.pdf
tracing and field tracing techniques, and it is compared with a reference case without astigmatism. 2 www.LightTrans.com. Modeling Task. ... Collimation of Astigmatic Diode Laser Beam by Objective Lens. version. 2.0. toolbox(es) Starter Toolbox. VL version used for simulations. 2. 020.2 (Build 1.116) category. Application Use Case.
Astigmatic traction force microscopy (aTFM) - PMC
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8042066/
Astigmatic imaging is a technique widely employed in single-molecule localisation microscopy to quantify the 3D position of an emitter relative to the focal plane 24. By introducing a cylindrical lens directly in front of the camera in the optical path of the emitted light, the microscope’s PSF is reshaped depending on its position relative to the focal plane (Fig. 1a ).
Gaussian light beams with general astigmatism
https://pubmed.ncbi.nlm.nih.gov/20072496/
This paper considers the propagation and diffraction of coherent light beams through nonorthogonal optical systems such as sequences of astigmatic lenses oriented at oblique angles to each other. The fundamental (gaussian) mode has elliptical light spots in each beam cross section and ellipsoidal (or hyperboloidal) wavefronts near the axis.
Modeling physical optics phenomena by complex ray …
https://www.spiedigitallibrary.org/journals/Optical-Engineering/volume-54/issue-03/035105/Modeling-physical-optics-phenomena-by-complex-ray-tracing/10.1117/1.OE.54.3.035105.full?SSO=1
By complex ray tracing we mean Arnaud’s ray-equivalent method for propagating generally astigmatic (twisted) Gaussian beams along a skew path through a nonsymmetric optical system. For the general astigmatic case, a base (or chief) ray, four secondary divergence rays, and four secondary parallel waist rays must be traced.
Astigmatism (optical systems) - Wikipedia
https://en.wikipedia.org/wiki/Astigmatism_(optical_systems)
An optical system with astigmatism is one where rays that propagate in two perpendicular planes have different foci. If an optical system with astigmatism is used to form an image of a cross, the vertical and horizontal lines will be in sharp focus at two different distances. The term comes from the Greek α- meaning "without" and στίγμα, "a mark, spot, puncture".
Beam tracing - Wikipedia
https://en.wikipedia.org/wiki/Beam_tracing
Beam tracing is an algorithm to simulate wave propagation . It was developed in the context of computer graphics to render 3D scenes, but it has been also used in other similar areas such as acoustics and electromagnetism simulations. Beam tracing is a derivative of the ray tracing algorithm that replaces rays, which have no thickness, with beams.
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