The state of art of solid state tunable lasers in the visible

Solid state tunable lasers are prepared by incorporation of photostable luminescent dyes into glass matrices prepared by the sol-gel method. Laser oscillation at a wavelength between 400 nm and 700 nm may be obtained. The laser parameters absorption, cross-section, radiative and measured lifetime, quantum yield of fluorescence of the dyes, and threshold energies are reported. The energies obtained are in many mJ/cm² range.