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

Ahyoung Kim; K. B. Chung; J. W. Wu

doi:10.1063/1.2423237

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

Ahyoung Kim, K. B. Chung, J. W. Wu

Department of Physics

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

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.

Original language	English
Article number	251120
Journal	Applied Physics Letters
Volume	89
Issue number	25
DOIs	https://doi.org/10.1063/1.2423237
State	Published - 2006

Bibliographical note

Funding Information:
This work was supported by the 2006 Hongik University Research Fund, the Korea Science and Engineering Foundation through the Quantum Photonic Science Research Center at Hanyang University, and the Korea Research Foundation with Grant No. KRF 2006-005-J04001.

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title = "Control of self-collimated Bloch waves by partially flat equifrequency contours in photonic crystals",

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.",

author = "Ahyoung Kim and Chung, {K. B.} and Wu, {J. W.}",

note = "Funding Information: This work was supported by the 2006 Hongik University Research Fund, the Korea Science and Engineering Foundation through the Quantum Photonic Science Research Center at Hanyang University, and the Korea Research Foundation with Grant No. KRF 2006-005-J04001. ",

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doi = "10.1063/1.2423237",

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journal = "Applied Physics Letters",

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AU - Kim, Ahyoung

AU - Chung, K. B.

AU - Wu, J. W.

N1 - Funding Information: This work was supported by the 2006 Hongik University Research Fund, the Korea Science and Engineering Foundation through the Quantum Photonic Science Research Center at Hanyang University, and the Korea Research Foundation with Grant No. KRF 2006-005-J04001.

PY - 2006

Y1 - 2006

N2 - 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.

AB - 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.

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VL - 89

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 25

M1 - 251120

ER -

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

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