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Optically pumped intersubband emission of short-wave infrared radiation with GaN/AlN quantum wells
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10.1063/1.3089840
/content/aip/journal/apl/94/8/10.1063/1.3089840
http://aip.metastore.ingenta.com/content/aip/journal/apl/94/8/10.1063/1.3089840
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Figures

Image of FIG. 1.
FIG. 1.

(a) Cross-sectional TEM image of the QW sample used in this work. (b) Room-temperature ISB absorbance spectrum of the same sample. The negative dip in the spectrum near 1300 nm is an artifact of the system response and is not related to the optical properties of the sample. The inset shows the calculated conduction-band lineup and squared envelope functions of the three lowest bound states (referenced to their respective energy levels) of one QW in the active region.

Image of FIG. 2.
FIG. 2.

Emission spectra measured with a TM-polarized pump wave at 910 nm (dotted lines), and modified-Gaussian fits of the experimental data (solid lines). The spectra in (a) and (b) were measured at two different places in the QW sample.

Image of FIG. 3.
FIG. 3.

Emission spectra obtained under various excitation conditions. (a) Luminescence spectra measured with otherwise identical TM- (circles) and TE- (squares) polarized pump waves. (b) Luminescence spectra measured with the same pump wave and passed through a polarizer with transmission axis oriented along the TM (circles) and TE (squares) directions. (c) Dependence of the emission spectrum on the pump wavelength for . (c) Dependence of the emission spectrum on the pump wavelength for . In (c) and (d) the spectra are shifted relative to one another vertically for the sake of illustration clarity.

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/content/aip/journal/apl/94/8/10.1063/1.3089840
2009-02-27
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optically pumped intersubband emission of short-wave infrared radiation with GaN/AlN quantum wells
http://aip.metastore.ingenta.com/content/aip/journal/apl/94/8/10.1063/1.3089840
10.1063/1.3089840
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