E. P. Pozhidaev, S. P. Kotova, S. A. Samagin
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow
- Samara Branch of P. N. Lebedev Physical Institute, Russian Academy of Sciences
Abstract: We study the possibility of using a ferrielectric liquid crystal as an electro-optical medium for phase spatial light modulators. Electro-optical characteristics of the ferrielectric liquid crystal are measured, and a 12-sector crystal-based spiral plate is simulated numerically. It is found that at a sub-kHz switching frequency of the phase shift by 2π, the liquid-crystal ferrielectric in question is a lower-voltage electro-optical medium of spatiotemporal light modulators compared to ferroelectric liquid crystals.
Keywords: ferrielectric liquid crystals, ferroelectric liquid crystals, phase modulation of light, quadratic electro-optical effect, axially symmetric optical vortices.
Received: 28.07.2022