Spatiotemporal control of polarized terahertz waves based on vector holography in photoreactive liquid crystals

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H05523
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Electron device/Electronic equipment
• Research Institution: Nagaoka University of Technology
• Principal Investigator: Sasaki Tomoyuki 長岡技術科学大学, 工学研究科, 准教授 (90553090)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: テラヘルツ波 / 液晶 / ベクトルホログラフィ

Outline of Final Research Achievements

We fabricated liquid crystal cells with transparent electrodes and investigated the transmittance spectra in the terahertz (THz) spectral range. The results demonstrated that liquid crystals are useful media for realizing active THz devices. We also investigated optically tunable THz polarization converters using dye-doped liquid crystals. The polarization conversion properties of the dye-doped liquid crystal cells could be controlled using the laser beam irradiation. The fact suggests that the polarization state of THz waves can be modulated spatiotemporally using liquid crystals and vector holography.

Free Research Field

応用光学