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Two-dimensional broadband distributed-feedback quantum cascade laser arrays
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10.1063/1.3574555
/content/aip/journal/apl/98/14/10.1063/1.3574555
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/14/10.1063/1.3574555
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Scanning electron microscopy picture of a two-dimensional 16-element QCL array based on ring cavity surface emitting lasers. The entire array is in size. The inset shows a waveguide-section illustrating the etched second-order gratings to allow for vertical light emission.

Image of FIG. 2.
FIG. 2.

Spectra of 16-surface emitting DFB lasers of the 2D array recorded at 293 K. Individual wavelengths are separated by and cover an entire spectral range of . The inset shows a single-mode spectrum at with a side mode suppression ratio of 30 dB.

Image of FIG. 3.
FIG. 3.

(a) Peak optical power and voltage versus current density characteristics for eight individual lasers, located at the low frequency side (frequencies shown as inset). (b) Threshold current density (squares) and peak optical power (circles) as a function of the wavelength. For comparison the measured electroluminescence from a mesa (dashed line) indicates the gain spectrum of the incorporated QC material. All data were recorded at 293 K.

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/content/aip/journal/apl/98/14/10.1063/1.3574555
2011-04-04
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Two-dimensional broadband distributed-feedback quantum cascade laser arrays
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/14/10.1063/1.3574555
10.1063/1.3574555
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