We present a method of measuring the absolute phase in heterodyne-detected transient grating experiments. The method permits direct and sensitive characterization of the amplitude and phase of the grating parameters. We also present a convenient implementation of this technique and demonstrate its efficacy in a cuprate superconductor.
© 2004 Optical Society of America
Nuh Gedik and Joseph Orenstein, "Absolute phase measurement in heterodyne detection of transient gratings," Opt. Lett. 29, 2109-2111 (2004)