T
Tamer F. Refaat
Researcher at Langley Research Center
Publications - 107
Citations - 1209
Tamer F. Refaat is an academic researcher from Langley Research Center. The author has contributed to research in topics: Lidar & Responsivity. The author has an hindex of 18, co-authored 107 publications receiving 1073 citations. Previous affiliations of Tamer F. Refaat include Old Dominion University.
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Journal ArticleDOI
Twenty years of Tm:Ho:YLF and LuLiF laser development for global wind and carbon dioxide active remote sensing
Upendra N. Singh,Brian M. Walsh,Jirong Yu,Mulugeta Petros,Michael J. Kavaya,Tamer F. Refaat,Norman P. Barnes +6 more
TL;DR: The history of 2-μm laser development from early research to current state-of-the-art instrumentation and projected future space missions can be found in this paper, where a brief historical perspective of Tm:Ho work by early researchers is also given.
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Evaluation of an airborne triple-pulsed 2 μm IPDA lidar for simultaneous and independent atmospheric water vapor and carbon dioxide measurements
Tamer F. Refaat,Upendra N. Singh,Jirong Yu,Mulugeta Petros,Syed Ismail,Michael J. Kavaya,Kenneth J. Davis +6 more
TL;DR: Results indicate that the IPDA lidar system is capable of measuring water vapor and carbon dioxide differential optical depth with 0.5% and 0.2% accuracy from an altitude of 8 km to the surface and with 10 s averaging.
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Double-pulse 2-μm integrated path differential absorption lidar airborne validation for atmospheric carbon dioxide measurement.
TL;DR: A ground-based double-pulse integrated path differential absorption (IPDA) instrument for carbon dioxide (CO2) concentration measurements at 1572 nm has been developed and showed a differential absorption optical depth (DAOD) offset of 0.0046 existing in the instrument.
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Modeling of the temperature-dependent spectral response of In 1–χ Ga χ Sb infrared photodetectors
TL;DR: In this paper, a model of the spectral responsivity of In(1-x) Ga(x) Sb p-n junction infrared photodetectors has been developed.
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Calculations of the temperature and alloy composition effects on the optical properties of AlxGa1−xAsySb1−y and GaxIn1−xAsySb1−y in the spectral range 0.5–6 eV
TL;DR: In this article, a detailed analysis on the temperature and alloy composition dependence of the optical properties of III-V alloys AlxGa1−xAsySb1−y and GaxIn 1−xAysSb 1−y in the energy range 0.5-6 eV is presented.