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Distributed feedback quantum cascade lasers at on indium phosphide
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10.1063/1.3593499
/content/aip/journal/apl/98/21/10.1063/1.3593499
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/21/10.1063/1.3593499
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Electron micrograph of the top grating (etch depth , duty-cycle 1:1). (b) Facet of a fully processed device with top grating and thick gold filling the trenches.

Image of FIG. 2.
FIG. 2.

Electro-optic characteristic curves of (a) 2 mm and (b) 4 mm long devices for low duty-cycles of 0.25%. A single mode spectrum and the far-field intensity along the slow-axis (data points and Gaussian fit) of 2 mm long DFB-QCL are depicted in the insets.

Image of FIG. 3.
FIG. 3.

Behavior of the average and peak output power of a 2 mm long laser with increasing PRF at constant and .

Image of FIG. 4.
FIG. 4.

Tuning behavior of a DFB-QCL with at and . (a) Temperature tuning at (squares) and tuning induced by an increase in PRF at (triangles). (b) Tuning in dependence of a sub-threshold bias current (squares) and the concomitantly dissipated power (triangles).

Image of FIG. 5.
FIG. 5.

Detector signal of a pulse with etalon (continuous line) and (dotted) in the beam path at and . The dash-dotted line shows the transmission according to the HITRAN database (Ref. 8).

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/content/aip/journal/apl/98/21/10.1063/1.3593499
2011-05-26
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Distributed feedback quantum cascade lasers at 13.8 μm on indium phosphide
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/21/10.1063/1.3593499
10.1063/1.3593499
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