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Widely tunable quantum cascade lasers with coupled cavities for gas detection
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10.1063/1.3514247
/content/aip/journal/apl/97/18/10.1063/1.3514247
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/18/10.1063/1.3514247
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Optical microscope image of the device with an electron micrograph inset of the region in which the double channel waveguide has been separated into two cavities.

Image of FIG. 2.
FIG. 2.

Lock-in amplified single-mode spectra showing SMSRs of 17 to 30 dB.

Image of FIG. 3.
FIG. 3.

(a) Four single-mode spectra with different recorded at 310 K. (b) Normalized transmission of the long segment (continuous line) and the combined effective reflectivity of the air gap and the short segment (dot-dashed) calculated with a transfer matrix method.

Image of FIG. 4.
FIG. 4.

Spectra of single mode laser emission with and without ammonia in the beam path, their difference and a theoretical absorption spectrum at ambient pressure taken from the HITRAN database.

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/content/aip/journal/apl/97/18/10.1063/1.3514247
2010-11-05
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Widely tunable quantum cascade lasers with coupled cavities for gas detection
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/18/10.1063/1.3514247
10.1063/1.3514247
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