Preparation of the reflection type THz LC device and evaluation of the operating characteristics

Abstract

THz wave is electromagnetic wave which is ranging from 0.1 to 10 THz. Recently, THz wave is expected for application of broadband communication, nondestructive inspection, security check, and so on. THz phase-control device becomes important for the next THz wave application. Liquid crystal is known as a high　birefringence material in THz frequency range and it can have a potential application to THz phase control device. In the study, we fabricate the reflection type liquid crystal device for THz phase-control to reduce the cell thickness. Fundamental operation properties of the device are evaluated by using optically pumped gas laser.