Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Light-induced dielectric structures and enhanced self-focusing in critical photorefractive ferroelectrics

Not Accessible

Your library or personal account may give you access

Abstract

We consider the nonlinear dynamics occurring when an optical beam couples to dielectric material polarization in an unbiased photorefractive crystal undergoing a ferroelectric phase transition. The polarization profile produced by the light-induced electric field is evaluated by means of the Landau–Ginzburg approach and is found to manifest new thermodynamical states with their own specific nonlinear optical effects. We show that a temperature TC, lower than the critical one, exists such that (a) if T>TC the optical beam experiences an increasing self-focusing for decreasing temperatures and (b) if T<TC the optical beam allows the existence of thermodynamically metastable states associated with an optical ultra-self-focusing effect.

© 2009 Optical Society of America

Full Article  |  PDF Article
More Like This
Self-focusing and self-trapping in unbiased centrosymmetric photorefractive media

B. Crosignani, E. DelRe, P. Di Porto, and A. Degasperis
Opt. Lett. 23(12) 912-914 (1998)

Parametric hybrid scattering from light-induced ferroelectric and photorefractive structures

A. Selinger, U. Voelker, V. Dieckmann, M. Imlau, and M. Goulkov
Opt. Express 15(8) 4684-4693 (2007)

Nonstationary self-focusing in photorefractive media

A. A. Zozulya and D. Z. Anderson
Opt. Lett. 20(8) 837-839 (1995)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (2)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (7)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved