Ultraviolet single-frequency ns-pulses with high average output power

Summary form only given. There is a high demand for ultrastable, ultra-violet single-frequency pulses in a large number of applications. Two examples are writing fiber Bragg gratings and LIDAR systems. Both applications need high average output power. However, a very compact approach to obtain single-frequency UV pulses has been realized, but the average output power was low. Other similar laser systems lead to sufficiently high average output power, but suffer from low pulse to pulse stability. We report on a laser system that combines the advantages of both of the previous laser systems, single-frequency operation and high average output power.