A universal and versatile terahertz field manipulation mechanism by manipulating near-infrared phases with a dislocation scheme
Qinggang Lin,
Fu Feng,
Xuanke Zeng,
Yi Cai,
Wenzhao He,
Congying Wang,
Kaipeng Wu,
Xiaowei Lu,
Hongmei Zhong,
Shixiang Xu (),
Jingzhen Li and
Xiaocong Yuan ()
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Qinggang Lin: Shenzhen University
Fu Feng: Shenzhen University
Xuanke Zeng: Shenzhen University
Yi Cai: Shenzhen University
Wenzhao He: Shenzhen University
Congying Wang: Shenzhen University
Kaipeng Wu: Shenzhen University
Xiaowei Lu: Shenzhen University
Hongmei Zhong: Shenzhen University
Shixiang Xu: Shenzhen University
Jingzhen Li: Shenzhen University
Xiaocong Yuan: Shenzhen University
Nature Communications, 2025, vol. 16, issue 1, 1-9
Abstract:
Abstract This paper presents a universal and versatile terahertz (THz) wavefront-phase manipulation by manipulating the two-dimensional phases of the near-infrared pulses. The near-infrared manipulation enables independent controls of two kinds of wavefront-phases with a two-dimensional phase modulator along two orthogonal directions. An implementation strategy of the near-infrared manipulation is further introduced by a dislocation scheme including two plates with conjugated-phase functions to output two collinear pulses with orthogonal polarizations and conjugated modulated phases. The manipulated phases can be converted to THz region by type-II phase-matched difference frequency conversion. A proof-of-principle experiment has confirmed the flexible and multiple near-infrared wavefront-phase manipulation and the conversion to THz region via dynamically generating and controlling THz vortex, Bessel, and vortex-Bessel fields with tunable topological charge and “diffraction-free” propagation distance. This work provides a powerful wavefront-phase manipulation, particularly in spectral regions where direct phase manipulation is technically challenging, e.g. in THz region.
Date: 2025
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DOI: 10.1038/s41467-025-61935-3
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