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InAs/AlSb widely tunable external cavity quantum cascade laser around 3.2 μm
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10.1063/1.4774088
/content/aip/journal/apl/102/1/10.1063/1.4774088
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/1/10.1063/1.4774088
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Voltage-current and light-current characteristics of a standard 12-μm-wide ridge QCL at room temperature. Inset: emission spectrum of the QCL.

Image of FIG. 2.
FIG. 2.

Simplified schematics of the experimental setup, where DG, diffraction grating; BD, Black Diamond™ lenses; M, monochromator; PD, PbSe photodiode; LA, lock-in amplifier; TEC, temperature controller with laser driver. Inset: The InAs/AlSb laser chip design.

Image of FIG. 3.
FIG. 3.

Back-reflection to the tilted ridge waveguide in Littrow configuration (dashed) vs Fabry–Pérot mode reflection (solid). Dotted lines correspond to the extreme tolerable values of the lasing wavelength, mode size, and the effective refractive index of the ridge waveguide. Linear scale is shown in the inset.

Image of FIG. 4.
FIG. 4.

Normalized measured spectra at room temperature during continuous wavelength tuning between 3190 and 3275 nm.

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/content/aip/journal/apl/102/1/10.1063/1.4774088
2013-01-09
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: InAs/AlSb widely tunable external cavity quantum cascade laser around 3.2 μm
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/1/10.1063/1.4774088
10.1063/1.4774088
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