Demonstration of rewritable hologram by using photo-induced optical nonlinearity in liquid crystals. (21st November 2020)

• Record Type: Journal Article
• Authors: Miyagawa, Minako; Sohn, Woon Yong; Katayama, Kenji
• Is Part Of: Molecular crystals and liquid crystals. Volume 712(2020)
• Page Start: 97
• Page End: 103
• Publication Date: 2020-11-21
• Subjects: Computer generated hologram -- liquid crystal -- optical nonlinearity; Molecular crystals -- Periodicals; Liquid crystals -- Periodicals; Liquid crystals; Molecular crystals; Periodicals; 548
• DOI: 10.1080/15421406.2020.1856509
• Languages: English
• ISSNs: 1542-1406

Abstract

Abstract: The photo-responsive liquid crystals (LCs) close to the isotropic condition shows very large optical nonlinearity lasting for tens/hundreds of milliseconds after a pulse light illumination due to the flow-induced reorientation of liquid crystals. By optimizing the temperature and the pump light intensity, we succeeded to demonstrate various refractive index patterns due to this optical nonlinearity with a pattern illumination under a microscope. We demonstrated a rewritable hologram by using a computer generated hologram pattern on a photo-responsive LC.