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EnglishImproved optical power performance of bound-to-continuum quantum-cascade lasers operating at 2.83 THz is reported. Peak optical powers of 100 mW at 4 K and power conversion-efficiencies as high as w=5.5±0.4% in continuous wave at 40 K were measured. The w values were assessed via an experimental method based on the analysis of the local lattice temperature as extracted by microprobe photoluminescence versus electrical power. From the measured w values they extracted a slope efficiency value 0.41±0.11 W/A.
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| Titolo: | THz quantum cascade lasers with large wall-plug efficiency |
| Autori: | |
| Data di pubblicazione: | 2007 |
| Rivista: | |
| Abstract: | Improved optical power performance of bound-to-continuum quantum-cascade lasers operating at 2.83 THz is reported. Peak optical powers of 100 mW at 4 K and power conversion-efficiencies as high as w=5.5±0.4% in continuous wave at 40 K were measured. The w values were assessed via an experimental method based on the analysis of the local lattice temperature as extracted by microprobe photoluminescence versus electrical power. From the measured w values they extracted a slope efficiency value 0.41±0.11 W/A. |
| Handle: | http://hdl.handle.net/11586/13787 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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