A combined method of multiple-reflection and optical-wave-guide Raman scattering spectroscopies for studying the electric-field-induced reorientation of a ferroelectric liquid crystal cell

A combined method of multiple-reflection and optical-wave-guide Raman spectroscopies was proposed for studying the electric-field-induced reorientation of a surface-stabilized ferroelectric liquid crystal (FLC) cell. The method allowed us to measure selectively Raman scattering (RS) spectra from the FLC in a bulk phase and those from the FLC near an SiOx alignment layer. Time-resolved RS spectra from the two parts were measured by applying step-wise external electric fields, indicating that the FLC near the alignment layer exhibits a retarded response to the field compared to that in the bulk phase. The results proved the usefulness of the proposed method.