Non-linear photo-excited processes using the photorefractive effect are revisited with emphasis on spatial soliton generation in special laser beam propagation conditions. The soliton beams can create reversible or irreversible single-mode waveguides in the propagating materials. The important features are the 3D orientation and graded index profile matched to the laser fundamental mode. Bright spatial solitons are theoretically demonstrated and experimentally observed for the propagation of c.w. and pulsed femtosecond laser beams in photorefractive materials such as Bi-12 SiO20 (BSO) and lithium niobate crystals. Applications in high coupling efficiency, adaptive optical interconnections and photonic crystal production are possible. (c) 2005 Elsevier B.V. All rights reserved.
Laser generated soliton waveguides in photorefractive crystals / V. I., Vlad; Fazio, Eugenio; Bertolotti, Mario; A., Bosco; A., Petris. - In: APPLIED SURFACE SCIENCE. - ISSN 0169-4332. - STAMPA. - 248:1-4(2005), pp. 484-491. (Intervento presentato al convegno 4th International Conference on Photo-Excited Processes and Applications tenutosi a Lecce, ITALY nel SEP 05-09, 2004) [10.1016/j.apsusc.2005.03.098].
Laser generated soliton waveguides in photorefractive crystals
FAZIO, Eugenio;BERTOLOTTI, Mario;
2005
Abstract
Non-linear photo-excited processes using the photorefractive effect are revisited with emphasis on spatial soliton generation in special laser beam propagation conditions. The soliton beams can create reversible or irreversible single-mode waveguides in the propagating materials. The important features are the 3D orientation and graded index profile matched to the laser fundamental mode. Bright spatial solitons are theoretically demonstrated and experimentally observed for the propagation of c.w. and pulsed femtosecond laser beams in photorefractive materials such as Bi-12 SiO20 (BSO) and lithium niobate crystals. Applications in high coupling efficiency, adaptive optical interconnections and photonic crystal production are possible. (c) 2005 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
