Abstract

We report a new photoconductive switch having an average output power of 44μW, an instantaneous bandwidth of 300GHz, an output pulse width of 2.2ps, a peak output power of 1.0W, and an optical-to-electrical conversion efficiency of 0.5% when pumped by a palm-sized mode-locked free-space laser at λ=780.6nm with an average power of 8.7mW and an optical pulse width of 230fs. The switch is made from an ErAs:GaAs epitaxial layer inside a resonant optical cavity and coupled to a planar three-turn square spiral antenna.

© 2006 Optical Society of America

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