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Electrically pumped photonic crystal distributed feedback quantum cascade lasers
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10.1063/1.2798062
/content/aip/journal/apl/91/14/10.1063/1.2798062
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/14/10.1063/1.2798062
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) Sketch of the PCDFB structure and scanning electron microscopy pictures for (b) top view of the etched surface, (c) oblique view of the etched GaInAs holes before the removal of , and (d) cross section of the regrowth.

Image of FIG. 2.
FIG. 2.

(Color online) Calculated coupling coefficients for a rectangular photonic crystal lattice with circular elements, where , , and . The hole size factor is the ratio of the hole diameter to the smaller lattice constant .

Image of FIG. 3.
FIG. 3.

(Color online) Experimentally measured and simulated far field pattern of a PCDFB device with a ridge width of . The inset shows the comparison to a Fabry-Pérot laser with the same ridge width. The lasers were driven at 0.2% duty cycle. A liquid nitrogen cooled MCT detector was used for the power measurement.

Image of FIG. 4.
FIG. 4.

(Color online) Comparison of the spectral characteristics between a PCDFB laser and a Fabry-Pérot laser with the same ridge width. The inset shows the PCDFB spectra for other different driving currents. The measurements were made at 0.2% duty cycle with a liquid nitrogen cooled MCT detector. The spectral resolution was about .

Image of FIG. 5.
FIG. 5.

(Color online) Power-current-voltage characteristic of a PCDFB device at 2% duty cycle. A calibrated thermopile was used for the power measurement.

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/content/aip/journal/apl/91/14/10.1063/1.2798062
2007-10-05
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Electrically pumped photonic crystal distributed feedback quantum cascade lasers
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/14/10.1063/1.2798062
10.1063/1.2798062
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