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Room temperature quantum cascade lasers with 27% wall plug efficiency
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10.1063/1.3586773
/content/aip/journal/apl/98/18/10.1063/1.3586773
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/18/10.1063/1.3586773
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Power-current-voltage and (b) WPE-current characteristics of the double-channel processed device at different temperatures in pulsed mode operation. The device has a ridge width of and a cavity length of 3 mm. The back facet is HR coated and the front facet is uncoated. The pulse width and duty cycle are 500 ns and 5%, respectively.

Image of FIG. 2.
FIG. 2.

Threshold current density and WPE as a function of temperature for the device in Fig. 1 (circles) and that in Ref. 5 (squares). The dashed curves are exponential fit to the threshold current density with . The fitting parameters are , for the device in Ref. 5 and , for the device in Fig. 1. The data for WPE are simply linked by straight lines.

Image of FIG. 3.
FIG. 3.

(a) Power-current-voltage and (b) WPE-current characteristics of the buried-ridge processed device at different temperatures. The device has a ridge width of and a cavity length of 5 mm. The back facet is HR coated and the front facet is AR coated. The dashed curves are for pulsed mode operation and solid curves for cw operation. The inset of (b) shows the lasing spectrum in room temperature cw operation at a driving current of 0.7 A.

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/content/aip/journal/apl/98/18/10.1063/1.3586773
2011-05-02
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Room temperature quantum cascade lasers with 27% wall plug efficiency
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/18/10.1063/1.3586773
10.1063/1.3586773
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