Scale-free optical propagation in out-of-equilibrium ferroelectric crystals

Eugenio DelRe*, Aharon J. Agranat, Claudio Conti

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


In this paper we describe recent progress in the study of scale-free optical propagation in super-cooled nonergodic ferroelectrics. Our experimental and theoretical findings indicate that a regime can be found in which diffusion-driven photorefractive effects can fully annul the diffraction of focused laser beams. This demonstrates that diffraction can be systematically eliminated from an optical system and not simply compensated, with fundamental implications for optical imaging and microscopy. The effect transfers directly from the paraxial regime into the non-paraxial regime described by the Helmholtz Equation, and suggests a means to achieve the propagation of super-resolved optical images. The result is a nonlinear-based metamaterial, even though the underlying nano-structuring of the ferroelectric is random and the effect is both non-absorptive and wavelength-independent for a wide spectrum.

Original languageAmerican English
Title of host publicationNonlinear Optics and Applications V
StatePublished - 2011
EventNonlinear Optics and Applications V - Prague, Czech Republic
Duration: 19 Apr 201121 Apr 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceNonlinear Optics and Applications V
Country/TerritoryCzech Republic


  • Diffraction
  • Ferroelectricity
  • Imaging
  • Non-ergodicity
  • Non-paraxial effects
  • Relaxors
  • Solitons
  • Subwave-length propagation
  • Super-resolution


Dive into the research topics of 'Scale-free optical propagation in out-of-equilibrium ferroelectric crystals'. Together they form a unique fingerprint.

Cite this