We theoretically investigate collision of optical beams traveling in opposite directions through a centrosymmetric photorefractive crystal biased by a spatially periodic voltage. We analytically predict the fusion of counterpropagating solitons in conditions in which the applied voltage is rapidly modulated along the propagation axis, so that self-bending is suppressed by the "restoring symmetry" mechanism. Moreover, when the applied voltage is slowly modulated, we predict that the modified self-bending allows conditions in which the two beams fuse together, forming a curved light-channel splice. (C) 2009 Optical Society of America
Collision and fusion of counterpropagating micrometer-sized optical beams in periodically biased photorefractive crystals / A., Ciattoni; A., Marini; C., Rizza; DEL RE, Eugenio. - In: OPTICS LETTERS. - ISSN 0146-9592. - STAMPA. - 34:7(2009), pp. 911-913. [10.1364/ol.34.000911]
Collision and fusion of counterpropagating micrometer-sized optical beams in periodically biased photorefractive crystals
DEL RE, EUGENIO
2009
Abstract
We theoretically investigate collision of optical beams traveling in opposite directions through a centrosymmetric photorefractive crystal biased by a spatially periodic voltage. We analytically predict the fusion of counterpropagating solitons in conditions in which the applied voltage is rapidly modulated along the propagation axis, so that self-bending is suppressed by the "restoring symmetry" mechanism. Moreover, when the applied voltage is slowly modulated, we predict that the modified self-bending allows conditions in which the two beams fuse together, forming a curved light-channel splice. (C) 2009 Optical Society of AmericaI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.