FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Terahertz Real-Time Off-Axis Digital Holography with Zoom Function |
Lei Hou1,2, Xiao-Wei Han1,3, Lei Yang1, Wei Shi1,2** |
1Department of Applied Physics, Xi'an University of Technology, Shaanxi 710048 2National Key Laboratory of Science and Technology on Applied Physical Chemistry, Shaanxi 710061 3Institute of Physical and Electrical Engineering, Weinan Normal University, Weinan 714000
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Cite this article: |
Lei Hou, Xiao-Wei Han, Lei Yang et al 2017 Chin. Phys. Lett. 34 054207 |
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Abstract We present a terahertz (THz) real-time digital holographic system with zoom function worked at 0.17 THz. The magnification factor ranges from 1 to 2. In the imaging experiment, the resolution is 2 mm with the magnification factor of 1.2. A metal sheet with F-shaped hollow is used as a sample, and its THz holograms are reconstructed by our developed algorithm based on the angular spectrum theorem, and the qualities of the THz images under different conditions are compared.
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Received: 16 January 2017
Published: 29 April 2017
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Fund: Supported by the National Natural Science Foundation of China under Grant Nos 61575161 and 61427814, the Foundation of Shaanxi Key Science and Technology Innovation Team under Grant No 2014KTC-13, the Special Financial Grant from the China Postdoctoral Science Foundation under Grant No 2013T60883, and the Equipment Pre-research Fund Project of China under Grant No 9140C370504140C37175. |
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