Apr. 2020

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Chinese Optics> 2020> 13(2): 381-395.

MENG Xian-zhu. Study on grating of Smith-Purcell free-electron laser[J]. Chinese Optics, 2020, 13(2): 381-395. doi: 10.3788/CO.20201302.0381

Citation:

MENG Xian-zhu. Study on grating of Smith-Purcell free-electron laser[J].Chinese Optics, 2020, 13(2): 381-395.doi:10.3788/CO.20201302.0381

MENG Xian-zhu. Study on grating of Smith-Purcell free-electron laser[J]. Chinese Optics, 2020, 13(2): 381-395. doi: 10.3788/CO.20201302.0381

Citation:

MENG Xian-zhu. Study on grating of Smith-Purcell free-electron laser[J].Chinese Optics, 2020, 13(2): 381-395.doi:10.3788/CO.20201302.0381

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Study on grating of Smith-Purcell free-electron laser

doi:10.3788/CO.20201302.0381

MENG Xian-zhu^,

Shandong Provincial Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252059, China

Funds:

National Natural Science Foundation of China (NSFC)11275089

National Natural Science Foundation of China (NSFC)11375081

More Information

Author Bio:
MENG Xian-zhu(1968—), male, born in Pingyi County, Shandong Province.Professor, master supervisor.He graduated from Liaocheng Teacher's University in 1991 and obtained his master's degree from Shandong Normal University in 2002.Now he is a professor of Liaocheng University and is mainly engaged in the research of free electron laser.E-mail:mengxz@lcu.edu.cn
Corresponding author:MENG Xian-zhu, E-mail:mengxz@lcu.edu.cn
Received Date:22 Mar 2019
Rev Recd Date:30 Apr 2019
Publish Date:01 Apr 2020

Abstract

Abstract

In order to study the relationship between the output frequency of Smith-Purcell free-electron laser and the depth, length and width of grating groove, the rectangular grating size of Smith-Purcell free-electron laser is discussed by means of theoretical analysis and particle simulation methods. First, by particle simulation, we found that the output frequency of Smith-Purcell free-electron laser decreases with the increase of grating groove depth, grating groove length and grating groove width. Then, the grating groove of Smith-Purcell free-electron laser is discussed by means of theoretical analysis. It is found that each grating groove can be equivalent to an LC resonant circuit. There are two kinds of radiation in Smith-Purcell free-electron laser, one is Smith-Purcell radiation and the other is LC oscillatory radiation. Finally, the LC oscillatory radiation of grating groove is estimated as well. It is found that the simulated values of output frequency of Smith-Purcell free-electron laser and the estimation values of LC oscillatory radiation of grating groove are both on the order of 10 ²GHz, and the variation is consistent. It is inferred that the output frequency of Smith-Purcell free-electron laser should be determined by grating groove rather than resonator.
- physical electronics,
- free-electron laser,
- grating,
- resonator,
- Smith-Purcell radiation,
- LC resonance circuit

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References (32)

References

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