Abstract

We report the direct autocorrelation of ultrashort mid-infrared laser pulses, using an unbiased GaAs/GaAlAs quantum-well device as a nonlinear photovoltaic medium. Using this method, we autocorrelate ultrashort (3-ps) low-energy (~500-nJ) pulses of 10.6-μm light. This approach should permit the autocorrelation of subpicosecond infrared pulses.

© 1995 Optical Society of America

Efficient generation of infrared picosecond pulses from 10 to 20 μm

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