Comparison of Pulse Terahertz and Continuous Wave Terahertz in Vacuum Charging Detection

The principle of detecting the vacuum degree of terahertz wave is discussed. The imaging principle, imaging characteristics, imaging speed, and price of pulsed terahertz and continuous wave terahertz are compared and analyzed. The conclusion shows that the pulse terahertz frequency is higher in the practicality of vacuum detection, but it is expensive, bulky and inconvenient to operate in the field. Continuous wave terahertz imaging has high frequency resolution, low price, short imaging time and practical more sexual.