Journal article
A nano-patterned photonic crystal laser with a dye-doped liquid crystal



Publication Details
Authors:
Ko, D.; Morris, S.; Lorenz, A.; Castles, F.; Butt, H.; Gardiner, D.; Qasim, M.; Wallikewitz, B.; Hands, P.; Wilkinson, T.; Amaratunga, G.; Coles, H.; Friend, R.
Publisher:
AMER INST PHYSICS
Publication year:
2013
Journal:
Applied Physics Letters
Pages range:
051101
Journal acronym:
Appl. Phys. Lett.
Volume number:
103
Issue number:
5
Number of pages:
5
ISSN:
0003-6951

Abstract
Covering a nano-patterned titanium dioxide photonic crystal (PC) within a well-oriented film of dye-doped liquid crystal (LC), a distributed feedback laser is constructed whereby the emission characteristics can be manipulated in-situ using an electric field. This hybrid organic-inorganic structure permits simultaneous selectivity of both the beam pattern and laser wavelength by electrical addressing of the LC director. In addition, laser emission is obtained both in the plane and normal to the PC. Along with experimental data, a theoretical model is presented that is based upon an approximate calculation of the band structure of this birefringent, tuneable laser device. (C) 2013 AIP Publishing LLC.


Authors/Editors

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