The Output Characteristics of Smith-Purcell Free Electron Laser Based on an All-Feedback Resonator

We investigate the output characteristics of Smith-Purcell free electron laser based on an all-feedback resonator by theoretic analysis and particle-in-cell simulation method. The simulation results show that the output power spectrum density is different with different azimuthal angle range in this device. The output power spectrum density on azimuthal angle curve is a nonlinear curve. This output characteristics is important to design the port of this device.