caa a22 4500 469065818 CHVBK 20180323132908.0 cr unu---uuuuu 170328e19920301xx s 000 0 eng 10.1007/BF02728495 doi (NATIONALLICENCE)springer-10.1007/BF02728495 De Nicola S. Istituto di Cibernetica del Consiglio Nazionale delle Ricerche, 80072, Arco Felice, Napoli, Italia aut Variational characterization of the elliptic Gaussian beam [Elektronische Daten] [S. De Nicola] Summary: We study the paraxial wave equation for a monocromatic light wave with two dimensions transverse to the beam propagation. We develop an average description of the field based on the calculation of the beam intensity moments and explicitly demonstrate that the elliptic Gaussian mode in free space can be derived as a solution of the paraxial wave equation from a variational extime of a proper functional of the field amplitude. The propagation characteristics of such modes are analysed. Società Italiana di Fisica, 1992 PACS 42.10.Qj Propagation and transmission in random turbulent media and in other inhomogeneous media nationallicence PACS 52.35.Hr Electromagnetic waves ( e.g. , electron-cyclotron, Whistler, Bernstein, upper hybrid, lower hybrid) nationallicence Il Nuovo Cimento B (1971-1996) Società Italiana di Fisica 107/3(1992-03-01), 345-350 107:3<345 1992 107 40764 https://doi.org/10.1007/BF02728495 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02728495 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- De Nicola S. Istituto di Cibernetica del Consiglio Nazionale delle Ricerche, 80072, Arco Felice, Napoli, Italia aut NATIONALLICENCE 773 0- Il Nuovo Cimento B (1971-1996) Società Italiana di Fisica 107/3(1992-03-01), 345-350 107:3<345 1992 107 40764 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer