Orbital angular momentum of the laser beam and the second order intensity moments

Authors
Gao, CQ Wei, GH Weber, H
Citation
Cq. Gao et al., Orbital angular momentum of the laser beam and the second order intensity moments, SCI CHINA A, 43(12), 2000, pp. 1306-1311
Citations number
8
Categorie Soggetti
Multidisciplinary
Journal title
SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY
ISSN journal
10016511 → ACNP
Volume
43
Issue
12
Year of publication
2000
Pages
1306 - 1311
Database
ISI
SICI code
1001-6511(200012)43:12<1306:OAMOTL>2.0.ZU;2-1
Abstract
From the wave equation of a generalized beam the orbital angular momentum i s studied. It is shown that the orbital angular momentum exists not only in the Laguerre-Gaussian beam,but in any beam with an angular-dependent struc ture. By calculating the second order intensity moments of the beam the rel ation between the orbital angular momentum and the second order moments [x theta (y)], [y theta (x)] is given. As an example the orbital angular momen tum of the general astigmatic Gaussian beam is studied.