Generation of high power sub millimeter radiation using free electron laser

3rd International Conference on Communication Systems

无线电电子学

Panwar, J.^1 ; Sharma, S.C.^1 ; Malik, P.^1 ; Yadav, M.^1 ; Sharma, R.^1

Department of Applied Physics, Delhi Technological University (DTU), Bawana Road, Delhi

110042, India^1

关键词: High-power radiation;    Ion channel;    Output radiation;    Pondermotive forces;    Relativistic electron beam;    Strong field;    Submillimeters;    Transverse velocity;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/331/1/012014/pdf
DOI  :  10.1088/1757-899X/331/1/012014

来源: IOP

【 摘 要 】

We have developed an analytical formalism to study the emission of high power radiation lying in the sub millimetre range. A relativistic electron beam (REB) is velocity modulated by the pondermotive force exerted by the laser beams. After passing through the drift space, the beam gets density modulated which further interacts with the strong field wiggler and acquires a transverse velocity that couples with the modulated density of the beam in the presence of ion channel which contribute to the non-linear current density which further leads to the emission of the radiation. The output radiation can be modified by changing the wiggler parameters and the energy of the electron beam. The power of the output radiation is found to increase with the modulation. The obtained radiation can be employed for various applications.