[OPTICAL REVIEW Vol. 4, No. 3 (1997) 395-401]

Phase-Only Modulation with a Twisted Nematic Liquid Crystal Panel for a Reconfigurable Grating

Hiroyuki ICHIKAWA*

Department of Electrical and Electronic Engineering, Faculty of Engineering, Ehime University, 3 Bunkyo, Matsuyama, 790 Japan

(Received April 19, 1996; Accepted February 14, 1997)

A single-path transmission type twisted nematic liquid crystal panel appears to achieve nearly phase-only spatial light modulation when placed between a properly aligned polarizer and analyzer. We obtained more than E phase delay with the equipment whose retardation was less than E.

Key words : spatial light modulator, twisted nematic liquid crystal panel, polarization, grating, reconfigurable