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Effect of antimony nano-scale surface-structures on a GaSb/AlAsSb distributed Bragg reflector
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10.1063/1.4792320
/content/aip/journal/apl/102/6/10.1063/1.4792320
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/6/10.1063/1.4792320
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Figures

Image of FIG. 1.
FIG. 1.

(a) Reflectance data for both bare GaSb/AlAsSb DBR and DBR withSb surface nano-structure. (b) GaSb/AlAsSb DBR surface, and (c)GaSb/AlAsSb with Sb nano-structure on surface.

Image of FIG. 2.
FIG. 2.

Cross-sectional analysis EDS of layers shows that surface structures are composed of Sb. Analysis of the geometry of surface structure using atomic force microscopy and X-TEM (shown in the inset) indicates long-wire shaped structures with triangular cross-sections.

Image of FIG. 3.
FIG. 3.

(a)Transfer matrix-based simulations are used to fit the modified reflectance of antimony-based DBR by using a calculated antimony–air composite refractive index. (b) Extinction ratio shows a higher transmission for -polarized light, and is spectrally dependent. In addition, the amplitude of the electric field at the Sb nano-structure surface coincides with the enhancement of polarization. A cross-section schematic of the antimony-nano-structure surface is shown in the inset indicating the direction of and polarizations.

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/content/aip/journal/apl/102/6/10.1063/1.4792320
2013-02-13
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effect of antimony nano-scale surface-structures on a GaSb/AlAsSb distributed Bragg reflector
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/6/10.1063/1.4792320
10.1063/1.4792320
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