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Polarization-selective resonant photonic crystal photodetector
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10.1063/1.3036954
/content/aip/journal/apl/93/21/10.1063/1.3036954
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/21/10.1063/1.3036954
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Design of the CCA PhC structure. (a) Optimization of the CCA structure by modifying nearest air holes as shown in the inset, and field intensity distributions of the resonant dipolelike array mode on a logarithmic scale (b) along the horizontal cross section of the slab and (c) along the vertical cross section of the slab when quality factor is maximized at . Here, the thickness of the slab is , and the radius of initial air holes is , respectively, where is the lattice constant of PhC.

Image of FIG. 2.
FIG. 2.

Fabrication of the CCA PhC detector. (a) Schematic view of fabrication (simple structure of doped QWs, -electrode formation, mesa construction, and PhC pattern introduction in sequence) and (b) SEM images of a fabricated sample with different magnifications.

Image of FIG. 3.
FIG. 3.

Photocurrent measurement setup.

Image of FIG. 4.
FIG. 4.

Spectral photocurrent responses and enhancement of photocurrent with and without PhC patterns: [(a) and (c)] for -polarized light and [(b) and (d)] for -polarized light. All photocurrent spectra are plotted after subtracting the background (dark) current.

Image of FIG. 5.
FIG. 5.

(a) Coupled modes at the CCA PhC slab from the normal incident plane wave calculated by the periodic FDTD method. (b) Magnified SEM image near the center of the sample. The air hole size is represented by colors, indicated in the color bar to the left.

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/content/aip/journal/apl/93/21/10.1063/1.3036954
2008-11-25
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Polarization-selective resonant photonic crystal photodetector
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/21/10.1063/1.3036954
10.1063/1.3036954
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