Abstract

We utilize the two-photon conductivity of a fused-silica substrate to produce a photoconductive switch for use in an intensity autocorrelator for ultraviolet ultrashort pulses. We perform measurements at 267  nm with pulse durations in the range of 110–330  fs and with energies as weak as 10  nJ. Based on the bandgap of fused silica, this device can potentially operate in the wavelength range of 140–280  nm.

© 1998 Optical Society of America

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