Focus free terahertz reflection imaging and tomography with Bessel beams

S. F. Busch; G. E. Town; M. Scheller; M. Koch

doi:10.1007/s10762-014-0129-1

Focus free terahertz reflection imaging and tomography with Bessel beams

S. F. Busch^*, G. E. Town, M. Scheller, M. Koch

^*Corresponding author for this work

School of Engineering

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

A broadband terahertz (THz) reflection imaging system with high spatial resolution over a large depth of field is reported. A THz axicon lens producing a truncated THz Bessel beam with a linear focus exceeding 120 mm in length, and with the diameter of the central lobe less than 2 mm was used for imaging in a reflection geometry employing a pulsed THz time-domain spectrometer. With numerical post-processing, it was possible to reconstruct the three dimensional shape of the scanned object.

Original language	English
Pages (from-to)	318-326
Number of pages	9
Journal	Journal of Infrared, Millimeter, and Terahertz Waves
Volume	36
Issue number	3
DOIs	https://doi.org/10.1007/s10762-014-0129-1
Publication status	Published - Mar 2015

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abstract = "A broadband terahertz (THz) reflection imaging system with high spatial resolution over a large depth of field is reported. A THz axicon lens producing a truncated THz Bessel beam with a linear focus exceeding 120 mm in length, and with the diameter of the central lobe less than 2 mm was used for imaging in a reflection geometry employing a pulsed THz time-domain spectrometer. With numerical post-processing, it was possible to reconstruct the three dimensional shape of the scanned object.",

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AU - Busch, S. F.

AU - Town, G. E.

AU - Scheller, M.

AU - Koch, M.

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N2 - A broadband terahertz (THz) reflection imaging system with high spatial resolution over a large depth of field is reported. A THz axicon lens producing a truncated THz Bessel beam with a linear focus exceeding 120 mm in length, and with the diameter of the central lobe less than 2 mm was used for imaging in a reflection geometry employing a pulsed THz time-domain spectrometer. With numerical post-processing, it was possible to reconstruct the three dimensional shape of the scanned object.

AB - A broadband terahertz (THz) reflection imaging system with high spatial resolution over a large depth of field is reported. A THz axicon lens producing a truncated THz Bessel beam with a linear focus exceeding 120 mm in length, and with the diameter of the central lobe less than 2 mm was used for imaging in a reflection geometry employing a pulsed THz time-domain spectrometer. With numerical post-processing, it was possible to reconstruct the three dimensional shape of the scanned object.

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IS - 3

ER -

Focus free terahertz reflection imaging and tomography with Bessel beams

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