Abstract
Cholesteric liquid crystals (CLCs) have recently attracted much attention because they can be regarded as a one-dimensional pseudo-photonic crystal. One of the most active researches of CLC is photonic crystal lasers, because the periodicity of a helix can be easily tuned by applying external factors such as temperature or an electric field. In particular, the design of a cavity structure has been studied with the aim of realizing improved efficiency in a CLC laser. Since liquid crystal orientation strongly depends on the boundary structure or shape of a cell, we consider that a cell structure must be a key factor for creating a unique molecular orientation. In this study, we examine the orientation and optical properties of CLC in a holey fiber.
