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Title: Optically imprinted reconfigurable photonic elements in a VO{sub 2} nanocomposite

We investigate the optical and thermal hysteresis of single-domain vanadium dioxide nanocrystals fabricated by ion beam synthesis in a fused silica matrix. The nanocrystals exhibit a giant hysteresis, which permits to optically generate a long-time stable supercooled metallic phase persistent down to practically room temperature. Spatial patterns of supercooled and insulating nanocrystals feature a large dielectric contrast, in particular, for telecom wavelengths. We utilize this contrast to optically imprint reconfigurable photonic elements comprising diffraction gratings as well as on- and off-axis zone plates. The structures allow for highly repetitive (>10{sup 4}) cycling through the phase transition without structural damage.
Authors:
;  [1] ; ;  [2] ;  [3] ;  [4]
  1. Experimentelle Physik 2, TU Dortmund University, Otto-Hahn-Straße 4, 44227 Dortmund (Germany)
  2. Lehrstuhl für Experimentalphysik 1 and Augsburg Centre for Innovative Technologies (ACIT), Universität Augsburg, Universitätstr. 1, 86159 Augsburg (Germany)
  3. (NIM), Schellingstr. 4, 80799 München (Germany)
  4. Lehrstuhl für Experimentalphysik IV, Universität Augsburg, Universitätstr. 1, 86159 Augsburg (Germany)
Publication Date:
OSTI Identifier:
22310863
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BEAMS; DAMAGE; DIELECTRIC MATERIALS; DIFFRACTION GRATINGS; HYSTERESIS; NANOCOMPOSITES; NANOMATERIALS; NANOSTRUCTURES; PHASE TRANSFORMATIONS; SILICA; SYNTHESIS; TEMPERATURE RANGE 0273-0400 K; VANADIUM OXIDES; WAVELENGTHS