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Effect of intermixing on bulk and interface Raman modes in GaAs:AlAs superlattice waveguide structures
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10.1063/1.2986149
/content/aip/journal/jap/104/7/10.1063/1.2986149
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/7/10.1063/1.2986149

Figures

Image of FIG. 1.
FIG. 1.

Raman spectra are shown from (a) the SL layer and (b) the cladding in the as-grown sample, and from (c) the SL layer in the intermixed sample.

Image of FIG. 2.
FIG. 2.

Raman spectra on the IFVD intermixed SL samples annealed at .

Image of FIG. 3.
FIG. 3.

PL peak position at the center of the SL vs annealing temperature.

Image of FIG. 4.
FIG. 4.

Raman spectral features with clear trends vs. annealing temperature.

Image of FIG. 5.
FIG. 5.

The shifts of (a) the GaAs-like TO peak position and (b) the GaAs-IF mode vs. the TE polarized PL wavelength, and (c) the intensity ratio of the GaAs-like alloy and bulk-like modes.

Image of FIG. 6.
FIG. 6.

Profiles along the bandgap grating at the SL core layer are shown, revealing the (a) GaAs-like TO mode position, (b) GaAs-like TO mode integrated area, (c) GaAs-like IF TO mode integrated area, (d) PL peak position, (e) AlAs-TO FWHM, and (f) the AlAs-like DA/IF mode integrated area.

Tables

Generic image for table
Table I.

The SL core samples.

Generic image for table
Table II.

Observed Raman peaks for the SL core samples.

Generic image for table
Table III.

Raman spectral parameters

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/content/aip/journal/jap/104/7/10.1063/1.2986149
2008-10-01
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effect of intermixing on bulk and interface Raman modes in GaAs:AlAs superlattice waveguide structures
http://aip.metastore.ingenta.com/content/aip/journal/jap/104/7/10.1063/1.2986149
10.1063/1.2986149
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