Phase imaging is used to compare near-field measurements with the corresponding far-field intensity distribution. A liquid-crystal device serves as a phase object that can be programmed as a variable grating. Real-time phase visualization then provides an avenue for direct optimization of complex phase gratings.
© 1996 Optical Society of America
[Optical Society of America ]
L. J. Friedman, D. S. Hobbs, S. Lieberman, D. L. Corkum, H. Q. Nguyen, D. P. Resler, R. C. Sharp, and T. A. Dorschner, "Spatially resolved phase imaging of a programmable liquid-crystal grating," Appl. Opt. 35, 6236-6240 (1996)