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Electrically Switchable, One‐Dimensional Polymeric Resonators from Holographic Photopolymerization: A New Approach for Active Photonic Bandgap Materials
Author(s) -
Jakubiak R.,
Bunning T.J.,
Vaia R.A.,
Natarajan L.V.,
Tondiglia V.P.
Publication year - 2003
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200390056
Subject(s) - materials science , lasing threshold , liquid crystal , optoelectronics , holography , photonic crystal , resonator , grating , refractive index , laser , electric field , band gap , optics , photopolymer , polymer , polymerization , wavelength , physics , quantum mechanics , composite material
Stimulated emission is demonstrated by optically pumping chromophores within the liquid‐crystal domains of 1D bandgap structures that are derived from holographic polymer‐dispersed liquid‐crystal (H‐PDLC) gratings (see Figure). Electrically switchable laser resonance is also possible using the H‐PDLC, since applying an electric field across the grating aligns the directors of the liquid crystal, diminishing the refractive index profile and, consequently, the lasing action.