The wave-front curvature of an incident laser beam can modify the spatial phase modulation of the beam, and hence the diffraction of the beam, traversing a liquid-crystal film. It is shown both theoretically and experimentally that this explains the anomalous fine structure in the diffraction ring pattern observed with laser intensities above the Freederickscz transition threshold.
© 1984 Optical Society of America
Original Manuscript: July 16, 1984
Manuscript Accepted: September 13, 1984
Published: December 1, 1984
E. Santamato and Y. R. Shen, "Field-curvature effect on the diffraction ring pattern of a laser beam dressed by spatial self-phase modulation in a nematic film," Opt. Lett. 9, 564-566 (1984)