Journal
SUPERLATTICES AND MICROSTRUCTURES
Volume 40, Issue 2, Pages 119-124Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.spmi.2006.06.001
Keywords
terahertz; absorption coefficient; quantum-well photodetectors; optical phonons
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We calculate the spectral response of a terahertz (THz) quantum-well photodetector designed for 7 THz detection peak frequency. We incorporate the effect of GaAs optical phonons which give rise to a strong absorption in the region of 34-36 meV and result in an increase in reflection due to the large refractive index (n) change around this region. Comparing the calculated spectral shape with experiments, we show the improvement over the standard expressions. (c) 2006 Elsevier Ltd. All rights reserved.
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