We demonstrate measurements of the factor of a distributed-feedback quantum cascade laser (QCL) by using a newly modified self-mixing interferometric technique exploring the laser itself as the detector. We find a strong dependence of the factor on the injection current, ranging from −0.44 at 120 mA to 2.29 at 180 mA, which can be attributed to the inherent physics of QCLs.
Measurements of the alpha factor of a distributed-feedback quantum cascade laser by an optical feedback self-mixing technique"
GIULIANI, GUIDO;
2006-01-01
Abstract
We demonstrate measurements of the factor of a distributed-feedback quantum cascade laser (QCL) by using a newly modified self-mixing interferometric technique exploring the laser itself as the detector. We find a strong dependence of the factor on the injection current, ranging from −0.44 at 120 mA to 2.29 at 180 mA, which can be attributed to the inherent physics of QCLs.File in questo prodotto:
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