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Continuous-wave 2.52 Terahertz Gabor inline compressive holographic tomography

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Abstract

Continuous-wave (CW) 2.52 Terahertz (THz) 3D tomographic images were obtained by numerically reconstructing a single Gabor inline digital hologram based on modified compressive sensing reconstruction algorithm. Three metallic copper samples which are separately adhered to three Teflon plate were used as the targets. The actual axial resolution achieved was higher than 6 mm, and the lateral resolution was higher than 0.4 mm. Similarly, a paper clip and a handwritten character sample on a white paper were also imaged. Numerical simulation and experimental results verified the preferable reconstruction characteristics of the proposed modified algorithm. The feasibility of CW THz Gabor inline compressive holographic tomography is confirmed by adding barriers such as Teflon boards and thermal paper to block the samples.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (NSFC) (Grant 61377110) and the Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP) of China (20112302110028).

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  1. National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin, China

    Qi Li & Yun-Da Li

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  1. Qi Li
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  2. Yun-Da Li
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Correspondence to Qi Li.

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Li, Q., Li, YD. Continuous-wave 2.52 Terahertz Gabor inline compressive holographic tomography. Appl. Phys. B 117, 585–596 (2014). https://doi.org/10.1007/s00340-014-5871-5

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  • DOI: https://doi.org/10.1007/s00340-014-5871-5

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