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Various low group velocity effects in photonic crystal line defect waveguides and their demonstration by laser oscillation
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10.1063/1.2204647
/content/aip/journal/apl/88/20/10.1063/1.2204647
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/20/10.1063/1.2204647
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Dispersion relation of the designed photonic crystal slab with the waveguide calculated by 3D-FDTD. There are three points with zero group velocity, A, B, and C. Inset shows a schematic image of the waveguide. (b) Time-averaged Poynting vector distribution around the waveguide at B at the center of the slab. (c) Time-averaged Poynting vector distribution around the waveguide at B in the plane normal to slab at the center of (b). The waveguide direction is normal to the plane and the gray scale shows perpendicular component of the Poynting vector. Note that time-averaged Poynting vector becomes zero everywhere at or .

Image of FIG. 2.
FIG. 2.

(a) (b) Bird’s-eye view SEM images of a fabricated device.

Image of FIG. 3.
FIG. 3.

Laser emissions observed from the direction normal to the slabs. Dotted rectangles show the photonic crystal regions with waveguides. Bright spot seen in the center of the waveguide is the excitation spot. (a) Emission from the whole waveguide. The operation point is considered to be around C in Fig. 2(a). (b) Emission from the facets of the waveguide. The operation point is considered to be around B in Fig. 2(a).

Image of FIG. 4.
FIG. 4.

Lasing spectra with various excitation powers. (a) and (b) correspond to Figs. 3(a) and 3(b), respectively. Inset shows characteristic of the mode with lowest threshold power.

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/content/aip/journal/apl/88/20/10.1063/1.2204647
2006-05-15
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Various low group velocity effects in photonic crystal line defect waveguides and their demonstration by laser oscillation
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/20/10.1063/1.2204647
10.1063/1.2204647
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