Continuous-wave terahertz reflective off-axis digital holography

Min Wan; Dayong Wang; Lu Rong; Yunxin Wang; Haochong Huang; Bin Li

doi:10.1117/12.2246672

25 October 2016 Continuous-wave terahertz reflective off-axis digital holography

Min Wan, Dayong Wang, Lu Rong, Yunxin Wang, Haochong Huang, Bin Li

Proceedings Volume 10157, Infrared Technology and Applications, and Robot Sensing and Advanced Control; 101571U (2016) https://doi.org/10.1117/12.2246672
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China

Abstract

Terahertz (THz) continuous-wave digital holography is an advanced interference imaging technique that can reconstruct quantitative distributions of amplitude and phase of the sample in real time with high resolution. In this paper, a reflective off-axis holographic system is presented. A Gaussian fitting method is applied to enhance the hologram contrast and Laplacian of Gaussian filter is used to obtain the reconstructed distance automatically. Furthermore, spectrum filtering method and angular spectrum algorithm are used to obtain the complex amplitude of the one-yuan chinese metal coin. The results confirm the prospective application of terahertz digital holography in the surface morphology for reflective samples.

Citation Download Citation

Min Wan, Dayong Wang, Lu Rong, Yunxin Wang, Haochong Huang, and Bin Li "Continuous-wave terahertz reflective off-axis digital holography", Proc. SPIE 10157, Infrared Technology and Applications, and Robot Sensing and Advanced Control, 101571U (25 October 2016); https://doi.org/10.1117/12.2246672

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