Formation of ferroelectric photonic crystals with a period of 1.5–10 μmusing transverse acoustic waves

Abstract

It is shown that when interfering transverse acoustic waves act on a ferroelectric through a layer of a liquid electrode, it is possible to form regular domain structures with a period of 1.5–10 μm at frequencies of 400–30 MHz, respectively. Variants with liquid electrodes based on highly dissipative liquids[C4mim][PF6]andLiPF6–PCare considered. The frequency depend-ences of the spatial period of the domain structure and the angles of incidence of transverse waves on the “acoustic line-liquid” interface are obtained for frequencies limited by the New-tonian model of a liquid. Based on the simulation results, recommendations are given on the choice of the type of liquid electrodes, the values of thecarrier frequency of acoustic waves for a given period of the formed structure, as well as the angles of incidence of waves at the “paratellurite-liquid”interface at room temperature.