Terahertz digital holography

Xinke Wang; Ye Cui; Wenfeng Sun; Yan Zhang

doi:10.1117/12.919528

13 March 2012 Terahertz digital holography

Xinke Wang, Ye Cui, Wenfeng Sun, Yan Zhang

Proceedings Volume 8330, Photonics and Optoelectronics Meetings (POEM) 2011: Laser and Terahertz Science and Technology; 833003 (2012) https://doi.org/10.1117/12.919528
Event: Photonics and Optoelectronics Meetings 2011, 2011, Wuhan, China

Abstract

Terahertz wave (THz, also name T-Ray) belongs to far-infrared electromagnetic radiation. Since its unique properties, THz techniques have been paid more and more attentions during the past decades. In this field, THz digital holography is an important research branch, which can accurately extract three-dimensional optical information of objects. Based on features of this technique, it greatly reduces the experimental time and clearly presents the diffraction phenomena of the transmitted THz waves. We elucidated our works about the THz digital holography in recent years. Some key techniques in the THz digital holography are selected as research objects, which are the reflection measurement, quasi-near-field measurement, balanced electro-optic (EO) imaging, and polarization detection. From these four aspects, including the measurement mode, improvement of the spatial resolution, optimization of the signal to noise ratio (SNR), and acquirement of the polarization information, the THz digital holography imaging system has been investigated experimentally and theoretically. These works enhance the performances of the system and promote the practicability of the THz digital holography. Although there are a lot of theoretical and technical difficulties to be overcome in the practical applications, it is firmly believed that the THz digital holography will present strong abilities in factory and research fields in the future.

Citation Download Citation

Xinke Wang, Ye Cui, Wenfeng Sun, and Yan Zhang "Terahertz digital holography", Proc. SPIE 8330, Photonics and Optoelectronics Meetings (POEM) 2011: Laser and Terahertz Science and Technology, 833003 (13 March 2012); https://doi.org/10.1117/12.919528

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