Scattering of a high-order vector Bessel Gaussian beam by a spherical marine aerosol
| Autor: | Chenge Shi, Mingjian Cheng, Renxian Li, Lixin Guo |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
Radiation 010504 meteorology & atmospheric sciences Scattering Gaussian Polarization (waves) 01 natural sciences Atomic and Molecular Physics and Optics Computational physics Aerosol Angular spectrum method Azimuth symbols.namesake symbols Physics::Atmospheric and Oceanic Physics Spectroscopy Bessel function 0105 earth and related environmental sciences Gaussian beam |
| Zdroj: | Journal of Quantitative Spectroscopy and Radiative Transfer. 265:107552 |
| ISSN: | 0022-4073 |
| Popis: | Based on the generalized Lorenz-Mie theory (GLMT) and the angular spectrum decomposition method (ASDM), we derive the beam shape coefficients (BSCs) of high-order vector Bessel Gaussian beams (H-VBGB), and investigate the interaction mechanism of H-VBGB illuminating a spherical marine aerosol. Linear (x, y), circular (left, right), azimuthal and radial polarizations are considered. The effects of various parameters characterizing the incident beam and the aerosol on the normalized differential scattering cross section (DSCS) are investigated. Numerical results show that the normalized DSCS is very sensitive to fluctuations in the parameters, and that the distinctions of incident beams may highly influence results. The relative humidity of aerosol performs similar effects on results for all polarizations, so it is not feasible to recognize the relative humidity of aerosol environment by using the differences of normalized DSCS for various polarization states. We provide a reference for the practical use of the scattering features of non-diffractive beams illuminating spherical calibrators. |
| Databáze: | OpenAIRE |
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