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Control of self-collimated Bloch waves by partially flat equifrequency contours in photonic crystals

Title
Control of self-collimated Bloch waves by partially flat equifrequency contours in photonic crystals
Authors
Kim A.Chung K.B.Wu J.W.
Ewha Authors
우정원
SCOPUS Author ID
우정원scopus
Issue Date
2006
Journal Title
Applied Physics Letters
ISSN
0003-6951JCR Link
Citation
vol. 89, no. 25
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Self-collimation effects in photonic crystals are generally investigated by employing flat equifrequency contours. Here we report, based on a partially flat equifrequency contour inducing two different group velocity vectors, the simultaneous excitation of dual self-collimated beams and the selective excitation of either of them by varying the incident angle or the width of an input Gaussian beam. With combination of the finite-difference time-domain simulation and the Fourier analysis as well as the wave vector diagram, we analyze the refractive behaviors of these self-collimated Bloch waves. © 2006 American Institute of Physics.
DOI
10.1063/1.2423237
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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