Phase detection for continuous terahertz wave

Tielin Lu; Hui Yuan; Jingshui Zhang; Liangliang Zhang; Cunlin Zhang; Yuejin Zhao

doi:10.1117/12.2193280

12 August 2015 Phase detection for continuous terahertz wave

Tielin Lu, Hui Yuan, Jingshui Zhang, Liangliang Zhang, Cunlin Zhang, Yuejin Zhao

Proceedings Volume 9625, 2015 International Conference on Optical Instruments and Technology: Terahertz Technologies and Applications; 962506 (2015) https://doi.org/10.1117/12.2193280
Event: International Conference on Optical Instruments and Technology 2015, 2015, Beijing, China

Abstract

In this paper we proposed a method of phase extraction for continuous terahertz wave. Firstly, we study the mathematical relationship of phase between the electro-optic sampling signal and terahertz wave in the theory, and then build the platform of continuous terahertz wave, using BWO as the source of terahertz radiation and Fs-laser as the detection of pulse. After using differential circuit and the principle of electro-optic sampling, we detect the polarization properties of optical signal and transform it into electric signal. With the filter amplifying circuit for signal processing, we obtain the phase of continuous THz wave at 0.2 THz. This method of phase extraction provides a potential way to the continuous THz wave coherent imaging, which is of great significance to the further study on continuous THz wave coherent imaging.

Citation Download Citation

Tielin Lu, Hui Yuan, Jingshui Zhang, Liangliang Zhang, Cunlin Zhang, and Yuejin Zhao "Phase detection for continuous terahertz wave", Proc. SPIE 9625, 2015 International Conference on Optical Instruments and Technology: Terahertz Technologies and Applications, 962506 (12 August 2015); https://doi.org/10.1117/12.2193280

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