High-spectral purity solid-state oscillators and amplifiers are fundamental tools to deeply understand the interaction of radiation with matter. They find natural applications in various scientific fields such as condensed matter physics, biomedicine, environmental monitoring, microscopy, telecommunications, and precision measurements. 

The main scientific goal of this activity is the development of near- and midium-infrared optical sources (0.8 to 20 µm) with the highest spectral purity, wide emission wavelength tunability, and in the case of pulsed sources broad emission bandwidth and femtosecond pulse generation (1 fs=10^-15 s). For this purpose, the most sophisticated techniques for the active stabilization of the laser frequency, phase, and intensity are adopted.