All Solid State355nm Ultraviolet Laser Cleaner

Al-solid-state ultraviolet laser has wide applications in medical treatment, and basic research, It has become one of the research focus1. According to the rate equations, the basic theory of the Q-switched pulse has been introduced, and hence the cavity structure is optimize on the basis of cavity theory. Based on the nonlinear optics, the three wave coupling equations of SHG and THG is solved, small-signal solution of the coupled equations are given. At the same time, Gaussian beam SHG efficiency and phase matching angle are calculated. According to the theoretical analysis of the laser gain medium and the nonlinear crystal are chosen. The incident pump power of300W, continuous1064nm laser output51W, electro-optical conversion efficiency of17%, Q1064nm laser output46W. electro-optical conversion efficiency of15.3%, The Q532nm green laser8kHz, Maximum output power17W, LD side pump355nm Q-switched lasers4kHz, Output of462mW UV laser; LD end-pumped355nm Q-switched lasers10kHz, incident pump power of30W, Finally obtained1.32W UV laser output.