The advancement of 3D-printing opens up a new way of constructing affordable custom terahertz (THz) components due to suitable printing resolution and THz transparency of polymer materials. We present a way of calculating, designing, and fabricating a THz waveplate that phase-modulates an incident THz beam (λ0 = 2.14 mm) in order to create a predefined intensity profile of the optical wavefront on a distant image plane. Our calculations were performed for two distinct target intensities with the use of a modified Gerchberg-Saxton algorithm. The resulting phase-modulating profiles were used to model the polylactide elements, which were printed out with a commercially available 3D-printer. The results were tested in a THz experimental setup equipped with a scanning option, and they showed good agreement with theoretical predictions.
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28 May 2018
Research Article|
May 31 2018
3D-printed phase waveplates for THz beam shaping
J. Gospodaric;
J. Gospodaric
1
Institute of Solid State Physics, Vienna University of Technology (TU Wien)
, 1040 Vienna, Austria
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A. Kuzmenko;
A. Kuzmenko
1
Institute of Solid State Physics, Vienna University of Technology (TU Wien)
, 1040 Vienna, Austria
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Anna Pimenov;
Anna Pimenov
1
Institute of Solid State Physics, Vienna University of Technology (TU Wien)
, 1040 Vienna, Austria
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C. Huber;
C. Huber
2
Christian Doppler Laboratory for Advanced Magnetic Sensing and Materials, Faculty of Physics, University of Vienna
, 1090 Vienna, Austria
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D. Suess;
D. Suess
2
Christian Doppler Laboratory for Advanced Magnetic Sensing and Materials, Faculty of Physics, University of Vienna
, 1090 Vienna, Austria
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S. Rotter
;
S. Rotter
3
Institute for Theoretical Physics, Vienna University of Technology (TU Wien)
, 1040 Vienna, Austria
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A. Pimenov
A. Pimenov
1
Institute of Solid State Physics, Vienna University of Technology (TU Wien)
, 1040 Vienna, Austria
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Appl. Phys. Lett. 112, 221104 (2018)
Article history
Received:
February 28 2018
Accepted:
May 20 2018
Citation
J. Gospodaric, A. Kuzmenko, Anna Pimenov, C. Huber, D. Suess, S. Rotter, A. Pimenov; 3D-printed phase waveplates for THz beam shaping. Appl. Phys. Lett. 28 May 2018; 112 (22): 221104. https://doi.org/10.1063/1.5027179
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