Experimental Generation of Quasi-Zero-Order Mathieu-Gauss Beams via Diffractive Elements in THz Domain

We first demonstrate the Terahertz quasi-zero-order Mathieu-Gauss beams with a 0.1-THz continuous wave. To generate these beams, two diffractive elements, a cylindrical lens and an axicon bearing specific phases are fabricated via 3D printing technology. The related numerical simulations are conduct...

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Bibliographic Details
Published in:IEEE photonics journal 2021-04, Vol.13 (2), p.1-9
Main Authors: Shi, Haifeng, Wang, Kejia, Yang, Zhengang, Liu, Jinsong
Format: Article
Language:English
Subjects:
Communications systems
Continuous radiation
diffractive elements
Gaussian beams (optics)
Laser beams
Lenses
Linear arrays
Mathieu-Gauss beams
Nonlinear optics
Optical device fabrication
Optical diffraction
Optical imaging
Optical resonators
terahertz
Three dimensional printing
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Summary:We first demonstrate the Terahertz quasi-zero-order Mathieu-Gauss beams with a 0.1-THz continuous wave. To generate these beams, two diffractive elements, a cylindrical lens and an axicon bearing specific phases are fabricated via 3D printing technology. The related numerical simulations are conducted to study intensity distributions and properties on non-diffraction and self-healing of THz quasi-zero-order Mathieu-Gauss beams in free space. Experimental results are in good agreement with numerical ones. Based on the characteristic of terahertz Mathieu-Gauss beams, they can be applied to terahertz linear array imaging system and terahertz communication.
ISSN:1943-0655
1943-0655
1943-0647
DOI:10.1109/JPHOT.2021.3057470