We demonstrate a novel time-delayed method that employs the partially coherent properties of pump beams to distinguish molecular-reorientation gratings from thermal gratings. An extension of this method to the case of population grating is pointed out.
© 1988 Optical Society of America
Original Manuscript: July 8, 1987
Manuscript Accepted: October 26, 1987
Published: February 1, 1988
Zuhe Yu, Xin Mi, Qian Jiang, Peixian Ye, and Panming Fu, "Distinguishing molecular-reorientation gratings from thermal gratings by a time-delayed method," Opt. Lett. 13, 117-119 (1988)