Abstract

Heterodyne detection with a local oscillator generated by a diffractive optic provides good phase stability, but suffers from interfering single-beam-bleach signals. This interference is a problem in four-beam transient gratings, but becomes more severe in higher order transient gratings. A simple and low noise method to eliminate this interference is demonstrated in both a four-wave-mixing, first-order–transient-grating experiment and in a six-wave-mixing, second-order–transient-grating experiment.

© 2009 Optical Society of America

Ultrafast heterodyne-detected transient-grating spectroscopy using diffractive optics

Gregory D. Goodno, Gami Dadusc, and R. J. Dwayne Miller
J. Opt. Soc. Am. B 15(6) 1791-1794 (1998)

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