Abstract:Nanosecond pulsed visible laser is widely used in remote sensing,coherent radar system,precision machining,laser cleaning,and liquid dye laser pumping and so on.All solid state laser is favored for its compact structure,small volume,low cost,long life and so on.In recent years,nanosecond visible all solid state lasers have been developing rapidly.In this paper,the state of the art of nanosecond pulsed visible solid state lasers generated by second order nonlinear frequency conversion of near infrared light output from Nd 3+,Yb 3+ and other rare earth ion doped crystals pumped by conventional laser diodes is briefly described.The technical characteristics of several nanosecond pulse visible all solid state Raman lasers with abundant outgoing wavelength bands are introduced from the perspective of nonlinear frequency conversion,focusing on Raman frequency shifting,Raman frequency mixing,and diamond Raman,with an overview of their performance characteristics and technical bottlenecks,and concluding with a summary and outlook.