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Scanning 3-D IR Imaging With a GaN Photodiode Using Nondegenerate Two-photon Absorption

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Abstract

We demonstrate scanning 3-D IR imaging using non-degenerate two-photon absorption (2PA) in an uncooled GaN photodetector. The SNR of the technique should improve for longer imaging wavelengths due to increased nondegeneracy, which enhances 2PA.

© 2013 Optical Society of America

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