The Simulative Analysis of Electromagnetic Field and Energy Distribution Existing in 3mm Quasioptical Resonator

In this paper,the electromagnetic field and energy distribution of Gaussion beam existing in 3mm quasioptical resonator are simulated by using “Matlab” software package.Its results can be used as references to design resonator and in its measurement.And the paper also reveals that whatever mode the resonator applies its tangential electrical field is always zero at z=0.