We report femtosecond optical signal processing by using second-order spectral holography. Enhanced second-order diffraction from a thermoplastic plate makes possible new signal-processing operations not possible with first-order holography. Experiments resulting in output waveforms equal to the autoconvolution function of the input waveform are described, and the possibility of implementing a simple associative memory for ultrafast optical signals is discussed.
© 1994 Optical Society of America
Original Manuscript: July 26, 1993
Published: January 15, 1994
A. M. Weiner and D. E. Leaird, "Femtosecond signal processing by second-order spectral holograpy," Opt. Lett. 19, 123-125 (1994)