The transfer of TEM00 and TEM01 beams through a hard-aperture

Authors
Ait-Ameur, K Sanchez, F Brunel, M
Citation
K. Ait-ameur et al., The transfer of TEM00 and TEM01 beams through a hard-aperture, J MOD OPT, 47(7), 2000, pp. 1203-1211
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
JOURNAL OF MODERN OPTICS
ISSN journal
09500340 → ACNP
Volume
47
Issue
7
Year of publication
2000
Pages
1203 - 1211
Database
ISI
SICI code
0950-0340(20000615)47:7<1203:TTOTAT>2.0.ZU;2-Z
Abstract
We determine the far-field divergence angle theta(00) (theta(01)) resulting from the diffraction of a TEM00 (TEM01) beam incident on a circular apertu re. It is demonstrated that, with a suitable choice of the aperture radius, the ratio theta(01)/theta(00) is enhanced to about 2, while its value is 1 .64 without the aperturing effect. It is shown that this effect allows high discrimination between TEM00 and TEM01 modes either in the case of a spati al filter or in the case of an apertured resonator.