Tunable diode-pumped single-frequency travelling-wave Nd : YAG laser operating at 1319 nm

A single-frequency travelling-wave Nd:YAG laser with a wide wavelength tuning range achieved due to the use of a temperature-controlled intracavity KTP filter is studied. The output laser characteristics and the frequency tuning range are presented for different operation regimes. A tuning range of 90 GHz with a tuning rate of 12 GHz °C is for the first time achieved for Nd :YAG lasers operating at a wavelength of 1319 nm. The output power in the centre of the gain line was ~ 240 mW. The laser can be used in spectroscopy and metrology.