Gaussian beam propagation
Gaussian Beam Propagation through a Metamaterial Lens
... Following (COMSOL 2013), we consider a two-dimensional metamaterial lens enclosed in a square air domain which is surrounded by a perfectly matched layer (PML) on each side, as illustrated in Figure 1. A PML is an ...
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SHARP FOCUS AREA OF RADIALLY-POLARIZED GAUSSIAN BEAM PROPAGATION THROUGH AN AXICON V. V. Kotlyar, A. A. Kovalev, and S. S. Stafeev
... Abstract—Based upon developed radial FDTD-method, used for solution of Maxwell equations in cylindrical coordinates and implemented in Matlab-7.0 environment, we simulated focusing of the annular Gaussian ...
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Theoretical Study of Electromagnetic Wave Propagation: Gaussian Bean Method
... of Gaussian beam ...that Gaussian beam has to do with focusing and modifi- cation of shape of propagating electromagnetic wave or laser ...laser beam, it has been found that laser ...
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Focusing of Azimuthally Polarized Hyperbolic Cosine Gaussian Beam
... ized beam, the polarization shows large inhomogeneities in the focal region, while the azimuthally polarized beam has purely transverse field in focal ...tor beam can be decomposed into radially ...
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Convergence of Gaussian Belief Propagation Under General Pairwise Factorization: Connecting Gaussian MRF with Pairwise Linear Gaussian Model
... mechanisms, Gaussian belief propagation (BP) (Weiss and Freeman, 2000) is a low-complexity method for computing the marginal distributions of a high-dimensional joint Gaussian distribution, ...
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Conical diffraction of a Gaussian beam with a two crystal cascade
... diffracted Gaussian beam are shown to compare well with experiment for the cases of two biaxial crystals with the same and different lengths and with the second crystal rotated with respect to the ...
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ELECTRON LASER ACCELERATION: IS THE GAUSSIAN BEAM DESCRIPTION ADEQUATE?
... It has often been remarked in the references cited above that a plane-wave model is only an idealization, of value in at least two main respects: it helps build a clear intuitive picture for the scheme, and it plays a ...
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Walk-Sums and Belief Propagation in Gaussian Graphical Models
... performing Gaussian elimination, is well-posed if and only if J is positive ...on Gaussian models corresponds to Gaussian elimination in the computation tree, which has its own information matrix ...
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Beam shaping to generate uniform Laser Light Sheet and Linear Laser Spots
... Considering of intensity profiles transformation on the base of the diffraction theory 5,8 shows that uniform intensity distribution at the Object is transformed to Airy disk (1) in focus F’ and is then restored to ...
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New method for nonparaxial beam propagation
... Abstract- A new method for solving the wave equation is presented, which is non- paraxial and can be applied to wide-angle beam propagation. It shows very good stability characteristics in the sense that ...
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On the Convergence of Gaussian Belief Propagation with Nodes of Arbitrary Size
... of Gaussian message passing applied to pairwise Markov graphs ...(MGs). Gaussian message passing applied to pairwise MGs is often labeled Gaussian belief propagation (GaBP) and can be used to ...
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On the asymptotic evolution of finite energy Airy wavefunctions
... optical beam propa- gation, they equally apply to the dynamics of any system described by the Schr¨ odinger ...the propagation properties of Airy beams using asymptotic methods have been presented in ...the ...
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EXPERIMENTAL VERIFICATION OF THE TURBULENT EFFECTS ON LASER BEAM PROPAGATION IN SPACE
... Thus, we have effectively setup and tested a robust, inexpensive, highly accurate experiment to detect the effect of thermal turbulence on a propagat- ing laser beam in air using a point diffraction inter- ...
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Tight focus of light using micropolarizer and microlens
... The manipulation of polarization states of laser light and generation of a prescribed intensity distribution in a given plane by means of subwavelength diffraction gratings was first proposed in Ref. [1]. Subwavelength ...
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Effect of laser welding parameters on 6061 aluminium alloy
... (vacuum, air, pressurized chambers, or controlled atmospheres) and in some locations which are normally inaccessible or accessible only from one side. In addition to simple linear welds the latest laser welding ...
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Widely varying giant Goos–Hänchen shifts from airy beams at nonlinear interfaces
... Airy beams [1] have remarkable properties, such as their self-healing capabilities [2], that make them very attrac- tive for applications ranging from linear optical commu- nications [3] to those of the high-intensity ...
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Propagation of Modified Bessel Gaussian Beams in a Misaligned Optical System
... the propagation of MBG beams through misaligned optical systems has not been studied ...the propagation of MBG beams traveling through any misaligned optical ...the propagation of pure Bessel, ...
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Influence of strong magnetic fields on laser pulse propagation in underdense plasma
... Nonlinear propagation of lasers in unmagnetised plasma has been widely ...the propagation of a laser pulse in a plasma concern the transverse evolution [14, 15, 16], typically characterised by self-focusing ...
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Analysis of the Gaussian Beam on a Corrugated Dielectric Interface
... and beam waist modification. In the case of Gaussian beam there are additional modifications in the beam profile (radius of curvature and beam divergence angle) as well as the complex ...
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Ultrasonic Beam Propagation in Cast Stainless Steel
... A consequence is that the ultrasonic wave speeds vary with direction, which in turn leads to such phenomena as beam skewing and excess beam divergence.. The materials, anisotropic or not[r] ...
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