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Experimental demonstration of the slow group velocity of light in two-dimensional coupled photonic crystal microcavity arrays
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10.1063/1.1882755
/content/aip/journal/apl/86/11/10.1063/1.1882755
http://aip.metastore.ingenta.com/content/aip/journal/apl/86/11/10.1063/1.1882755
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Experimental setup used in measurement of the CPCRA band diagram. The explanation of symbols is as follows: : half-wave plate, BS: beam splitter, PBS: polarizing beam splitter, OL: objective lens, IR-cam: infrared camera, and D: detector. Rotations of the structure around the - and -axes are controlled by two rotation stages; (b) SEM images of the fabricated CPCRA with .

Image of FIG. 2.
FIG. 2.

(Color online) (a) Measured band diagram (from the transmission spectrum) of the CPCRA from Fig. 1 for the coupled -dipole mode in the direction. The dark blue stripe is the location of the coupled band. The horizontal axis is the tilt angle around the -axis, which corresponds to different -values; the vertical axis is the wavelength. The inset shows the transmission spectrum at 0° tilt, i.e., at the point. (b) The measured band diagram for coupled -dipole mode. The insets show the magnetic field pattern of the - and -dipole mode at the -point.

Image of FIG. 3.
FIG. 3.

(Color online) Comparison of the experiment with the FDTD simulations including structural astigmation and underlying oxide layer. Solid lines with filled markers are experimental results and dashed lines with empty markers are simulation results. The horizontal axis corresponds to the probed fraction of the indicated crystal direction and the vertical axis is the wavelength: (a) dipole bands in the direction. Triangles and squares denote one set of - and -dipole bands (also shown in Fig. 2), while inverted triangles and circles denote the other set, obtained after rotating the structure by 90° around the -axis; (b) - and -like dipole bands in the direction; (c) quadrupole band in the direction. The middle subfigure shows the magnetic field pattern of the quadrupole mode at the point. The subfigure on the right shows the unit cell and high symmetry directions.

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/content/aip/journal/apl/86/11/10.1063/1.1882755
2005-03-07
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Experimental demonstration of the slow group velocity of light in two-dimensional coupled photonic crystal microcavity arrays
http://aip.metastore.ingenta.com/content/aip/journal/apl/86/11/10.1063/1.1882755
10.1063/1.1882755
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