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Room temperature continuous wave operation of quantum cascade lasers with 12.5% wall plug efficiency
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10.1063/1.2957673
/content/aip/journal/apl/93/2/10.1063/1.2957673
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/2/10.1063/1.2957673
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Figures

Image of FIG. 1.
FIG. 1.

(a) Power-current-voltage and (b) WPE-current behavior of an uncoated QCL operating in cw mode at cryogenic temperatures ranging from . The cavity length and ridge width were and , respectively. The device was episide up bonded on a copper heatsink. The optical power was measured from one facet and doubled to give the total. The maximum power reached at with a WPE of 33%.

Image of FIG. 2.
FIG. 2.

(a) Power-current-voltage and (b) WPE-current behavior of a HR coated QCL operating in cw mode at temperatures between and . The cavity length and ridge width were and , respectively. The device was episide down bonded to a diamond submount and the temperature was regulated with a chip thermistor on the submount. The maximum power and WPE were and 11% at , with and 4.7% still observed at .

Image of FIG. 3.
FIG. 3.

(a) Power-current-voltage and (b) WPE-current behavior of a long, wide, uncoated QCL operating in cw mode. The temperature was regulated at . (a) shows the influence of the thermistor position to the device performance. (b) shows a maximum WPE of 12.5% obtained using a chip thermistor on the submount. The spectrum measured slightly above threshold is displayed as the inset of (b).

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/content/aip/journal/apl/93/2/10.1063/1.2957673
2008-07-14
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Room temperature continuous wave operation of quantum cascade lasers with 12.5% wall plug efficiency
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/2/10.1063/1.2957673
10.1063/1.2957673
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