Journal
APPLIED PHYSICS LETTERS
Volume 101, Issue 19, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4767128
Keywords
electroluminescence; light coherence; optical fabrication; photodetectors; quantum cascade lasers
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Funding
- Austrian Science Fund, project IRON [F2503-N17]
- PLATON project 35N within the Austrian NANO initiative
- FP7 EU-project ICARUS
- Austrian Science Fund (FWF) [F 2503] Funding Source: researchfish
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We demonstrate a bi-functional quantum cascade device that detects at the same wavelength as it coherently emits. Our fabricated device operates at room-temperature with a pulsed peak power emission of 45 mW and a detector responsivity of 3.6 mA/W. We show how to compensate the intrinsic wavelength mismatch between the laser and the detector, based on a bound-to-continuum design. An overlap between the laser and the detector spectra was observed from 6.4 mu m to 6.8 mu m. The electro-luminescence spectrum almost perfectly matches the detector spectrum, overlapping from 6.2 mu m to 7.1 mu m. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4767128]
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