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Sampled grating, distributed feedback quantum cascade lasers with broad tunability and continuous operation at room temperature
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10.1063/1.4732801
/content/aip/journal/apl/100/26/10.1063/1.4732801
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/26/10.1063/1.4732801
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Schematic of SGDFB device structure. (b) Theoretical reflectivity spectra of front and back sections for different current injection schemes. Spectra are overlapped in order to show shift of coincidence wavelength.

Image of FIG. 2.
FIG. 2.

(a) Continuous wave emission spectra for Laser 1 at room temperature with uniform current density in both sections. Two clusters belonging to two different grating supermodes are shown. (b) Continuous tuning between supermodes 1 and 2 using dual section current control.

Image of FIG. 3.
FIG. 3.

Single-mode emission spectra for Laser 1 across a wide wavelength range at room temperature. Upper figures show both the side mode suppression ratio and continuous wave output power as a function of emission wavelength.

Image of FIG. 4.
FIG. 4.

Room temperature, continuous wave, single-mode emission spectra for three lasers with different grating periods from the same wafer. A gap-free electrical tuning range of 270 nm (120 cm−1) is demonstrated.

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/content/aip/journal/apl/100/26/10.1063/1.4732801
2012-06-29
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Sampled grating, distributed feedback quantum cascade lasers with broad tunability and continuous operation at room temperature
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/26/10.1063/1.4732801
10.1063/1.4732801
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