Theoretical Study On The Characterisitics Of Neon Discharge And The Law Of Interaction With Terathertz

Terahertz(terahertz,THz)waves have huge application potential in fields such as object imaging and detection,environmental monitoring,medicine and health,mobile communications,aerospace,etc.due to their unique properties.In recent years,people have invested a lot of research on terahertz,but the lack of a wider range of applications,fast response speed and high sensitivity of THz wave detectors restrict the development of THz waves.In order to obtain a high-sensitivity room-temperature THz wave detector,the research group used an optical method to detect THz waves in experiments.In this paper,we theoretically study the characteristics of neon discharge and the law of interaction between gas discharge and terahertz waves,and make further research for self-made GDD.Optimization,Select a suitable numerical model,consider the electrical effect of THz wave on plasma,establish boundary conditions,and study the interaction between THz wave and plasma.The COMSOL Multiphysics software was used to establish a two-dimensional neon glow discharge model.By changing the discharge structure,such as changing the electrode spacing,comparing the law of dynamic parameters such as electron density and electron temperature,a suitable discharge interval was obtained.By changing the parameters of the applied voltage and initial electron density during discharge,the discharge law and discharge characteristics of neon glow discharge were obtained.In the glow discharge,the influence of adding THz wave is considered.B y changing the frequency of THz wave,the action rule of gas discharge and THz wave is studied.Through the theoretical research and simulation in the above aspects,it has laid a theoretical foundation for the determination of the electrode size,plasma density,electrode spacing and other parameters of the new THz wave detector.