Diode-pumped tunable Tm : YLF laser for mid-infrared gas spectroscopy

The spectral characteristics of the longitudinally diode-pumped Tm : YLF laser radiation are experimentally studied. The laser wavelength was tuned within a spectral range of 1860 - 1940 nm with a linewidth not exceeding 1 nm. The effect of water vapour on the spectral characteristics is studied.