We demonstrate a technique that allows the optical imprinting of waveguides in the bulk of photorefractive crystals without resorting to nonlinear beam dynamics, self-focusing, or solitons, making use of the beam reshaping properties of the pattern deposited by the intensity distribution of a diffracting Gaussian beam. The procedure is made possible using a polarization-resolved scheme that, in distinction to previously reported methods based on temperature cycles, can be implemented in ferroelectrics both in the polar and in the centrosymmetric phase.
Linear writing of waveguides in bulk photorefractive crystals through a two-step polarization sequence / A., Pierangelo; DEL RE, Eugenio; A., Ciattoni; E., Palange; A. J., Agranat; B., Crosignani. - In: JOURNAL OF OPTICS. A, PURE AND APPLIED OPTICS. - ISSN 1464-4258. - STAMPA. - 10:6(2008), p. 064005. ( 2nd Topical Meeting of the European-Optical-Society on Optical Microsystems Capri, ITALY SEP 30-OCT 01, 2007) [10.1088/1464-4258/10/6/064005].
Linear writing of waveguides in bulk photorefractive crystals through a two-step polarization sequence
DEL RE, EUGENIO;
2008
Abstract
We demonstrate a technique that allows the optical imprinting of waveguides in the bulk of photorefractive crystals without resorting to nonlinear beam dynamics, self-focusing, or solitons, making use of the beam reshaping properties of the pattern deposited by the intensity distribution of a diffracting Gaussian beam. The procedure is made possible using a polarization-resolved scheme that, in distinction to previously reported methods based on temperature cycles, can be implemented in ferroelectrics both in the polar and in the centrosymmetric phase.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
