Trial to measurement of circular dichroism spectrum in the terahertz region

2015 Fiscal Year Final Research Report

• Project/Area Number: 26620021
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Physical chemistry
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: Tanaka Masahito 国立研究開発法人産業技術総合研究所, 計量標準総合センター, 企画主幹 (30386643)
• Co-Investigator(Kenkyū-buntansha): TAIRA Yoshitaka 国立研究開発法人産業技術総合研究所, 分析計測標準研究部門, 研究員 (60635803) ; KURODA Ryunosuke 国立研究開発法人産業技術総合研究所, 分析計測標準研究部門, 主任研究員 (70350428)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 化学物理 / 加速器 / テラヘルツ／赤外材料・素子 / 計測工学 / 物性実験

Outline of Final Research Achievements

In the terahertz wavelength region, spectroscopic technique by using circular polarization, such as circular dichroism and optical rotation, has not been established yet. In this work, for establishing the circularly polarized spectroscopy in the terahertz region, we have developed the component technologies for the polarization analysis and evaluation of polarized optics, by using the strong coherent terahertz radiation emitted from a linear accelerator. The polarization analysis system composes of a terahertz camera as a detector, phase shifter, and linear polarizer. We succeeded in observing the two-dimensional distributions of light intensity and linear and circular polarizations of radially polarized light. Moreover, we also observed the occurrence and distribution of left and right circularly polarized light by inserting a quarter wave plate.

Free Research Field

化学