We present a method for implementing optical heterodyne detection using a diffractive optic for time-resolved transient-grating experiments. This technique does not require active phase locking of pulse pairs to achieve interferometric stability. The phase stability, intrinsic time resolution, and signal amplification are demonstrated experimentally through Raman scattering in carbon disulfide.
© 1998 Optical Society of America
Gregory D. Goodno, Gami Dadusc, and R. J. Dwayne Miller, "Ultrafast heterodyne-detected transient-grating spectroscopy using diffractive optics," J. Opt. Soc. Am. B 15, 1791-1794 (1998)