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Conferences > CLEO_SI > 2013 > CTu3E > CTu3E.3

Pulsed and CW IR Detection in Wide-gap Semiconductors using Extremely Nondegenerate Two-photon Absorption

Himansu S. Pattanaik, Dmitry A. Fishman, David J. Hagan, and Eric W. Van Stryland

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Abstract

We detect both pulsed and CW IR light using uncooled GaN or GaAs photodiodes using extremely-nondegenerate two-photon-absorption (2PA) which shows large enhancement over degenerate 2PA. Urbach-tail absorption limits the signal-to-noise ratio for CW detection.

© 2013 Optical Society of America

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