Fig. 2. Applied voltage-transmittance performance characterization of PDLC devices with increased thicknesses (from 7 μm to 18 μm) under wavelength of 635 nm laser source.

a The voltage-dependent transmittance curves between different thickness of PDLC devices. b Drive voltage and saturation voltage as a function of different thickness of PDLC devices, showing that both of them increased with the thickness raising. c The switch on and off rate of PDLC devices with various thickness. d The circle of switch on and off process of PDLC device with the thickness of 13 μm