Fig. 1. (a) Experimental setup: a cell sandwiched between two right angle prisms, probed with a linearly polarized laser beam that propagates inside the nematic slab at an angle of 45° with respect to the cell normal. (b) Transmitted light intensity of the cell filled with the NLC HNG7058 in response to the applied voltage pulse amplitude U₀ = 478 V. (c) Dynamics of the field-induced birefringence change δn(t) of the NLC HNG7058 in response to a voltage pulse amplitude U₀ = 478 V. The experiments are performed at 23°C in a cell of thickness d = 6.1 µm for the two compensator settings A and B.

Fig. 2. Electro-optic responses of the NLC mixtures MJ961200 and M5 before and after polymerization. (a) Dynamics of field-induced birefringence change δn(t) in response to an electric field of amplitude E = 1.44 × 10⁸ V/m. Dependences of (b) the maximum field-induced birefringence change δn_max, (c) the switching-on time τ_on, and (d) the switching-off time τ_off on the applied electric fields. The cell thicknesses of the MJ961200 cell and the M5 cell are 6.1 µm and 4.6 µm, respectively. The working temperature is T = 21.5°C.

Fig. 3. Electro-optic responses of the NLC mixtures MJ961200 and M15 before and after polymerization. (a) Dynamics of field-induced birefringence δn(t) in response to an electric field of amplitude E = 1.44 × 10⁸ V/m. Dependences of (b) the maximum field-induced birefringence change δn_max, (c) the switching-on time τ_on, and (d) the switching-off time τ_off on the applied electric fields. The cell thicknesses of the MJ961200 cell and the M15 cell are 6.1 µm and 4.6 µm, respectively. The working temperature is T = 21.5°C.

Fig. 4. Electro-optic responses of the NLC mixtures HNG7058, HT23, and HT100. (a) Dynamics of field-induced birefringence change δn(t) in response to an electric field of amplitude E = 1.44 × 10⁸ V/m. Dependences of (b) the δn_max, (c) the switching-on time τ_on, and (d) the switching-off time τ_off on the applied electric fields. The cell thicknesses of the HNG7058 cell, HT23 cell, and HT100 cell are 4.6 µm, 2.9 µm, and 2.9 µm, respectively. The working temperature is T = 21.5°C.

Fig. 5. Electro-optic responses of the NLC mixtures HNG7058 and HT84. (a) Dynamics of field-induced birefringence change δn(t) in response to an electric field of amplitude E = 1.44 × 10⁸ V/m. Dependences of (b) the δn_max, (c) the switching-on time τ_on, and (d) the switching-off time τ_off on the applied electric fields. The cell thicknesses of the HNG7058 cell and the HT84 cell are 4.6 µm and 2.6 µm, respectively. The working temperature is T = 21.5°C.