Focusing properties of radially polarized modified Bessel-modulated Gaussian beam by a high numerical aperture objective
| Autor: | M. Boustimi, Lahcen Ez-Zariy, A. Belafhal, E. M. El Halba |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
Beam diameter business.industry 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Numerical aperture 010309 optics Angular aperture Optics 0103 physical sciences Physics::Accelerator Physics Radial polarization M squared Laser beam quality Electrical and Electronic Engineering 0210 nano-technology business Beam divergence Gaussian beam |
| Zdroj: | Optics & Laser Technology. 88:40-53 |
| ISSN: | 0030-3992 |
| DOI: | 10.1016/j.optlastec.2016.08.008 |
| Popis: | In this paper, the focusing properties of radially polarized modified Bessel-modulated Gaussian (RPMQBG) beam with quadratic radial dependence through a high numerical aperture (NA) lens are investigated, theoretically and numerically, using the vector diffraction theory model. The tight focusing properties are studied in great detail. The numerical simulation results show that the intensity distribution of the RPMQBG beam at the focal region of the numerical aperture can be changed considerably by the variation of the optical vortex beam topological charge l and by the high numerical aperture angle (NA). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect