FOCAL SWITCH - A NEW EFFECT IN LOW-FRESNEL-NUMBER SYSTEMS

Authors
MARTINEZCORRAL M CLIMENT V
Citation
M. Martinezcorral et V. Climent, FOCAL SWITCH - A NEW EFFECT IN LOW-FRESNEL-NUMBER SYSTEMS, Applied optics, 35(1), 1996, pp. 24-27
Citations number
10
Categorie Soggetti
Optics
Journal title
Applied optics → ACNP
ISSN journal
00036935
Volume
35
Issue
1
Year of publication
1996
Pages
24 - 27
Database
ISI
SICI code
0003-6935(1996)35:1<24:FS-ANE>2.0.ZU;2-#
Abstract
It is shown for the first time we believe, that when a spherical wave illuminates a certain type of diffracting screen, in addition to the e xpected focal-shift effect, depending on the value of the Fresnel numb er of the focusing system, a focal switch effect can appear, i.e., an increase in the height of the lateral lobe of the axial-intensity dist ribution over that of the central lobe. (C) 1996 Optical Society of Am erica