Focal shift and focal switch of broadband hollow Gaussian beams passing through an aperture-lens system

In this paper, we deduce the approximate analytical formula for the distribution of axial intensity for broadband hollow Gaussian beams (HGBs) passing through an optical system with an aperture and a lens separated based on the Collins formula. Moreover, the focal shift and focal switch effect of br...

Full description

Saved in:
Bibliographic Details
Published in:The European physical journal. D, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2022-06, Vol.76 (6), Article 108
Main Authors: Zeng, Xiangmei, Wang, Ye, Ma, Ruiqiong, Hui, Zhanqiang
Format: Article
Language:English
Subjects:
Apertures
Applications of Nonlinear Dynamics and Chaos Theory
Atomic
Broadband
Gaussian beams (optics)
Lenses
Molecular
Optical and Plasma Physics
Physical Chemistry
Physics
Physics and Astronomy
Quantum Information Technology
Quantum Physics
Regular Article - Optical Phenomena and Photonics
Spectroscopy/Spectrometry
Spintronics
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, we deduce the approximate analytical formula for the distribution of axial intensity for broadband hollow Gaussian beams (HGBs) passing through an optical system with an aperture and a lens separated based on the Collins formula. Moreover, the focal shift and focal switch effect of broadband HGBs passing through the system is investigated in detail. As demonstrated by the numerical results, whether the focal switch of broadband HGBs occurs is primarily dependent on the size of the aperture, the effective Fresnel number, as well as the relative separation between the aperture and the lens. Furthermore, the bandwidth may have effects on the behavior of the focal switch and reduce the relative focal shift. In this paper, the focal shift of HGBs through a thin lens is recognized as a special case. Graphical abstract
ISSN:1434-6060
1434-6079
DOI:10.1140/epjd/s10053-022-00434-2