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Title: Controllable light diffraction in woodpile photonic crystals filled with liquid crystal

An approach to switching between different patterns of light beams transmitted through the woodpile photonic crystals filled with liquid crystals is proposed. The phase transition between the nematic and isotropic liquid crystal states leads to an observable variation of the spatial pattern transmitted through the photonic structure. The transmission profiles in the nematic phase also show polarization sensibility due to refractive index dependence on the field polarization. The experimental results are consistent with a numerical calculation by Finite Difference Time Domain method.
Authors:
; ;  [1] ; ; ; ;  [2] ;  [2] ;  [3]
  1. European Laboratory for Non-Linear Spectroscopy (LENS), University of Florence, via Nello Carrara 1, 50019 Sesto Fiorentino (Italy)
  2. Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya, Colom 11, 08222 Terrassa (Spain)
  3. (ICREA), passeig Lluis Companys 23, 08010 Barcelona (Spain)
Publication Date:
OSTI Identifier:
22399082
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 2; Other Information: (c) 2015 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; DIFFRACTION; FINITE DIFFERENCE METHOD; LIGHT TRANSMISSION; LIQUID CRYSTALS; PHASE TRANSFORMATIONS; PHOTONS; POLARIZATION; REFRACTIVE INDEX; VARIATIONS; VISIBLE RADIATION