研究目的
Investigating the generation of enhanced coherent terahertz radiation from a three-dimensional open holes array structure using multiple electron beam excitation.
研究成果
The 3DOHA structure with multi-beam excitation enhances the coherent Smith-Purcell radiation, offering a promising approach for developing terahertz radiation sources. The study demonstrates significant enhancement in radiation power and efficiency through the proposed structure.
研究不足
The study is based on simulations, and practical implementation may face challenges in electron beam modulation and alignment with the holes array structure.
1：Experimental Design and Method Selection:
The study proposes a three-dimensional open holes array (3DOHA) structure for generating coherent Smith-Purcell radiation. The electron beams pass through the holes, interacting with the surface wave field to enhance radiation.
2：Sample Selection and Data Sources:
Simulations are carried out using CST and CHIPIC based on the finite-difference time-domain (FDTD) method.
3：List of Experimental Equipment and Materials:
The structure parameters include period, number of periods, thickness of hole-layer, width of hole, height of hole, and distance between holes.
4：Experimental Procedures and Operational Workflow:
The electron beams are modulated and bunched as they interact with the surface wave mode in the 3DOHA structure.
5：Data Analysis Methods:
The intensity of the radiated field and the frequency spectrum are analyzed to evaluate the enhancement of coherent Smith-Purcell radiation.
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