FOCUSING AT LOW FRESNEL NUMBERS IN THE PRESENCE OF CYLINDRICAL OR SPHERICAL-ABERRATION

Authors
JIANG DY STAMNES JJ
Citation
Dy. Jiang et Jj. Stamnes, FOCUSING AT LOW FRESNEL NUMBERS IN THE PRESENCE OF CYLINDRICAL OR SPHERICAL-ABERRATION, Pure and applied optics, 6(1), 1997, pp. 85-96
Citations number
10
Categorie Soggetti
Optics
Journal title
Pure and applied optics → ACNP
ISSN journal
09639659
Volume
6
Issue
1
Year of publication
1997
Pages
85 - 96
Database
ISI
SICI code
0963-9659(1997)6:1<85:FALFNI>2.0.ZU;2-#
Abstract
In this paper we discuss focusing of two-dimensional and three-dimensi onal scalar waves at low Fresnel numbers in the presence of cylindrica l or spherical aberration. We show that a larger maximum axial intensi ty than in the aberration-free case can be obtained with a positive cy lindrical or spherical aberration. Also, we give a physical explanatio n of this unexpected result.