Development of self-calibration technique of terahertz sensor linearity

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K18118
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Measurement engineering
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: Kinoshita Moto 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, 主任研究員 (00415671)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: テラヘルツ波 / 線形性・応答直線性 / 重ね合わせ法・重畳法 / 自己校正 / 計測工学 / センサ

Outline of Final Research Achievements

Terahertz spectrometers, which measure transmittance and reflectance of a sample by referring to the linearity of a terahertz wave sensor, are widely used in recent years. In order to support the applications of terahertz waves, the linearity self-calibration system for terahertz wave sensors was developed in this research. This system verifies the linearity of the response of a terahertz sensor to a simple summation of terahertz wave signals based on the superposition method.
In this research, the self-calibration system was uniquely constructed by combining wire-grid polarizers. Using this system, a commercial terahertz wave power meter was calibrated, and the nonlinearity of approximately less than 1% was obtained. This result is expected to be a foundation that supports the application of terahertz waves.

Free Research Field

計測工学