UV radiation source based on a copper vapour laser with acousto-optically controlled spectral and temporal parameters

A modified version of the optical scheme for second harmonic generation in a copper vapour laser is proposed, in which mirror focusing optics mounted at an angle of 45° to the incident light beam is used instead of lens focusing optics. A mean radiation power 1.4 W at a wavelength of 255.3 nm is achieved with a conversion efficiency of 28%. A high-speed system for controlling the spectral and temporal parameters of the UV radiation is developed and studied for the first time. The use of such a system in technological setups will considerably extend the range of their application.