نتایج جستجو برای: bessel operator

تعداد نتایج: 98482  

2017
Yangsheng Yuan Ting Lei Zhaohui Li Yangjin Li Shecheng Gao Zhenwei Xie Xiaocong Yuan

Optical beam wander is one of the most important issues for free-space optical (FSO) communication. We theoretically derive a beam wander model for Bessel beams propagating in turbulent atmosphere. The calculated beam wander of high order Bessel beams with different turbulence strengths are consistent with experimental measurements. Both theoretical and experimental results reveal that high ord...

Journal: :Annals of Physics 2021

We analyze the Schrödinger operator in two-dimensions with an attractive potential given by a Bessel–Macdonald function. This is derived non-relativistic approximation of planar quantum electrodynamics (QED3) models as framework for evaluation two-quasiparticle scattering potentials. The analysis motivated keeping mind fact that parity-preserving QED3 can provide possible explanation behavior s...

2014
Giovanni Milione Angela Dudley Thien An Nguyen Kamonasish Chakraborty Ebrahim Karimi Andrew Forbes Robert R. Alfano

We experimentally measured the “self-healing” of the spatially inhomogeneous states of polarization of radial and azimuthal polarized vector Bessel beams. Radial and azimuthal polarized vector Bessel beams were generated via a digital version of Durnin’s method, using a spatial light modulator in concert with a liquid crystal q-plate. As a proof of principle, their intensities and spatially inh...

Journal: :Optics letters 2017
Jelena Notaros Christopher V Poulton Matthew J Byrd Manan Raval Michael R Watts

Integrated optical phased arrays for generating quasi-Bessel beams are proposed and experimentally demonstrated in a CMOS-compatible platform. Owing to their elongated central beams, Bessel beams have applications in a range of fields, including multiparticle trapping and laser lithography. In this Letter, continuous Bessel theory is manipulated to formulate the phase and amplitude conditions n...

2002
Anuj Srivastava Xiuwen Liu Ulf Grenander

In this paper, we study a family of analytical probability models for images within the spectral representation framework. First the input image is decomposed using a bank of filters, and probability models are imposed on the filter outputs (or spectral components). A two-parameter analytical form, called a Bessel K form, derived based on a generator model, is used to model the marginal probabi...

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