Open AccessFocal switch of Hermite-Gaussian beams
Author(s) -
Peng Run-wu,
Lyu Bai-Da
Publication year - 2003
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.52.2795
Subject(s) - optics , gaussian , aperture (computer memory) , focal length , thin lens , lens (geology) , beam (structure) , gaussian beam , physics , hermite polynomials , numerical aperture , cardinal point , quantum mechanics , acoustics , wavelength
A simple optical system consisting of an aperture and a thin lens is considered.It is shown that when a Hermite-Gaussian (H-G) beam is incident on such a type of system and the parameters of the optical system and the beam satisfy a certain condition,a new effect called the focal switch can take place.Detailed numerical results and physical explanation are given to illustrate the characteristics of the focal switch of H-G beams.A comparison with the previous work is made and the potential application of the focal switch is pointed out.