Power Threshold Analysis of Output Windows in Gaussian Mode
In order to determine the acceptable working pulse width of the window,the absorbed power threshold of the window with different materials is studied when transmitting 170 GHz Gaussian mode.The thick-ness of the windows with different materials is first determined.Based on Gaussian mode distribution and dielec-tric loss power,the steady-state thermal analysis of the output windows with different materials is then carried out under the same heat dissipation boundary condition and geometric structure.The failure criterion is the critical temperature difference of the ceramic material and the thermal shock resistance coefficient.The absorbed power absorption threshold that the window can withstand is determined by the simulation results,and then the average microwave power that can be transmitted is deduced.The average power that the sapphire window can transmit is basically consistent with the hot test results.In response to the demand for improving the duty cycle during hot testing of conditioning sample tubes,when the pulse interval is 10 seconds,the maximum pulse width that differ-ent windows can withstand is theoretically determined,providing theoretical support for conditioning sample tube.To achieve a 170 GHz,1MW continuous wave output power,only diamond material can meet the needs of use.
万方数据
维普
