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Titolo:
SELF-FOCUSING AND SOLITON-LIKE STRUCTURES IN MATERIALS WITH COMPETINGQUADRATIC AND CUBIC NONLINEARITIES
Autore:
BERGE L; BANG O; RASMUSSEN JJ; MEZENTSEV VK;
Indirizzi:
CEA,CTR ETUD LIMEIL VALENTON F-94195 VILLENEUVE ST GEO FRANCE AUSTRALIAN NATL UNIV,CTR OPT SCI,AUSTRALIAN PHOTON COOPERAT RES CTR CANBERRA ACT 0200 AUSTRALIA RISO NATL LAB,DEPT OPT & FLUID DYNAM DK-4000 ROSKILDE DENMARK RUSSIAN ACAD SCI,INST AUTOMAT & ELECTROMETRY NOVOSIBIRSK 630090 RUSSIA
Titolo Testata:
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
fascicolo: 3, volume: 55, anno: 1997,
parte:, B
pagine: 3555 - 3570
SICI:
1063-651X(1997)55:3<3555:SASSIM>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
SCHRODINGER-EQUATION; VARIATIONAL APPROACH; SOLITARY WAVES; 2ND-ORDER; COLLAPSE; BEAMS; MEDIA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
35
Recensione:
Indirizzi per estratti:
Citazione:
L. Berge et al., "SELF-FOCUSING AND SOLITON-LIKE STRUCTURES IN MATERIALS WITH COMPETINGQUADRATIC AND CUBIC NONLINEARITIES", Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 55(3), 1997, pp. 3555-3570

Abstract

We study the mutual influence of quadratic and cubic nonlinearities on the propagation of the coupled fundamental and second harmonic wavesin asymmetric optical media. For attractive potentials with positive coupling parameters, it is shown that, in systems with two and three transverse dimensions, mutually trapped waves can self-focus until collapse whenever their respective powers exceed some thresholds. On the contrary, coupled waves diffracting in a one-dimensional plane never collapse and may evolve towards stable solitonlike structures. For higher transverse dimension numbers, we investigate the question of formingtwo-component solitons and determine criteria for their stability.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 11:36:02