Amplitude, phase, and hybrid ternary modulation modes of a twisted-nematic liquid-crystal display at approximately 400 nm.
Applicability of a commercial twisted-nematic liquid-crystal display is examined at approximately 400 nm. Different modulation modes predicted by Jones-matrix calculus are experimentally tested. High contrast amplitude modulation with negligible loss, high contrast and low loss hybrid ternary modulation, and 1.5pi continuous phase delay without intensity modulation and with low loss are presented. Simulation results of a 4f holographic system prove the usefulness of the high contrast for amplitude modulation, and the importance of pi phase difference between high transmission white levels in a hybrid ternary modulation.
Reményi
Judit
J
Budapest University of Technology and Economics, Department of Atomic Physics, Budafoki út 8., 1111 Budapest, Hungary. remenyi@eik.bme.hu
Várhegyi
Péter
P
Domján
László
L
Koppa
Pál
P
Lõrincz
Emõke
E