A circulating-liquid laser system

A circulating-liquid laser system utilizing Nd in selenium oxychloride is described. An advantage of such a laser is the etticient cooling of the medium. Special components, such as the laser head, circulating pump, and cells compatible with the chemical properties of the medium had to be developed. The system has been operated at I pulse per second with an output of 0.2 joule per pulse with no essential limitations on running time or higher performance capabilities.