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Doped gallium oxide nanowires with waveguiding behavior
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View: Figures


Image of FIG. 1.
FIG. 1.

SEM image of the obtained nanowires.

Image of FIG. 2.
FIG. 2.

(Color online) (a) Optical image of a Cr doped wire and (b) RT micro-PL image of the wire illuminated with the line of the Hg lamp in the lower end. Red Cr luminescence is excited in this end and transmitted along the wire.

Image of FIG. 3.
FIG. 3.

(Color online) Room temperature micro-PL images of Cr doped wires. . (a) Waveguiding behavior and (b) slight waveguiding effect in a wire of smaller dimensions.

Image of FIG. 4.
FIG. 4.

Room temperature PL spectra of Cr doped wires. . (a) Wire with length and cross-sectional dimensions of about . (b) Wire with similar transversal dimension as that shown in (a) and a length of . (c) Wire of length and a transversal dimension of .

Image of FIG. 5.
FIG. 5.

(Color online) (a) Optical image and (b) room temperature micro-PL image of the end of a wire in erbium doped sample. (c) Corresponding room temperature PL spectrum showing that the observed green emission in (b) is due to the intraionic transitions. in (b) and (c) was .

Image of FIG. 6.
FIG. 6.

(Color online) (a) Optical image and transmission of (b) blue (LED with peak at ), (c) green (laser with peak at ), and (d) red (laser with peak at ) light through a wire. Arrows indicate the direction in which light propagates.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Doped gallium oxide nanowires with waveguiding behavior