title: Rejuvenation in scale-free optics and enhanced diffraction cancellation life-time.
abstract: We demonstrate rejuvenation in scale-free optical propagation. The phenomenon is caused by the non-ergodic relaxation of the dipolar glass that mediates the photorefractive nonlinearity in compositionally-disordered lithium-enriched potassium-tantalate-niobate (KTN:Li). We implement rejuvenation to halt aging in the dipolar glass and extend the duration of beam diffraction cancellation.
authors.affiliation: Department of Physics, University of Rome La Sapienza, 00185 Rome, Italy.
authors.forename: J
authors.initials: J
authors.lastname: Parravicini
authors.forename: C
authors.initials: C
authors.lastname: Conti
authors.forename: A J
authors.initials: AJ
authors.lastname: Agranat
authors.forename: E
authors.initials: E
authors.lastname: DelRe
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D005898:Glass; D007909:Lenses; D055095:Optics and Photonics / Q000295:instrumentation*; D012031:Refractometry / Q000295:instrumentation*