1 January 2011 Photonic bandgap under irradiation of a Gaussian beam
Author Affiliations +
Abstract
The transfer matrix of a dielectric slab under propagation of a Gaussian beam was formulated. The derived matrix was applied for a one-dimensional photonic crystal (1DPC) structure and the transmittance spectrum and photonic bandgap (PBG) properties were investigated. An r-dependent (r is the radial coordinate of the Gaussian beam) PBG was obtained. With the increase of r, a redshift and a decrease in the PBG are observed. Higher PBGs experience more shift. Also properties of the photonic crystal (PC) structure with defect layer were investigated and displacement to red and decrease of the defect mode peak height, with an increase of r, were observed. The extra optical path that the outer rays travel due to the oblique propagation compared to the central ray in a Gaussian beam is responsible for these effects. For long Rayleigh ranges our results for the Gaussian beam were the same as that for plane wave.
© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)
Kazem Jamshidi-Ghaleh, Reza Abdi-Ghaleh, "Photonic bandgap under irradiation of a Gaussian beam," Journal of Nanophotonics 5(1), 051817 (1 January 2011). https://doi.org/10.1117/1.3609279 . Submission:
JOURNAL ARTICLE
11 PAGES


SHARE
RELATED CONTENT

Anderson localized optical fibers
Proceedings of SPIE (February 21 2013)
Self-focusing in high-power optical fibers
Proceedings of SPIE (February 09 2007)
Pulse Propagation And Dispersion In Arbitrary Optical Fibers
Proceedings of SPIE (November 13 1980)
Propagation of a Gaussian beam through a stack of positive...
Proceedings of SPIE (September 10 2010)

Back to Top