Abstract

We report the generation and coherent detection of freely propagating ultrashort baseband electromagnetic pulses. Using optical rectification in 110 GaAs for wideband emission and electro-optic sampling in a poled polymer for wideband detection, we demonstrate spectral sensitivity that extends from the far infrared λ100 µm to 33 THzλ=9 µm. Over a band of nearly 20 THz, a relatively flat frequency response is observed. We discuss issues that limit the response bandwidth.

© 2002 Optical Society of America

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