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A one-dimensional photonic-crystal nanocavity incorporating a fluorescent molecular dye

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4 Author(s)
Murshidy, Mohamed M. ; Department of Physics and Astronomy, The University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, United Kingdom ; Adawi, Ali M. ; Fry, Paul W. ; Lidzey, David G.

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We model the optical properties of a SiN based one-dimensional waveguide photonic crystal nanocavity with three tapered air holes as a function of the photonic crystal mirror fill factor using finite difference time domain calculations. We show that the Q-factor of this type of cavity has a strong dependence on the mirror fill factor, with a Q-factor as high as 35 000 predicted. Experimental studies on a range of representative structures whose surface is coated with a layer of a fluorescent dye confirm our modeling and reveal that such structures are characterized by a single optical mode having a Q-factor of 2000.

Published in:

Applied Physics Letters  (Volume:97 ,  Issue: 15 )

Date of Publication:

Oct 2010

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