Creation of luminescent defects in crystals by coherent pairs of femtosecond laser pulses

Probing the Structure and Dynamics of Na+ Ionic Doped LiF Crystals in Fluoride Eutectic Salt by Solid-State NMR

“…The color center lasers are solid-state lasers always based on alkali metal halide crystals, , which has a series of advantages such as high efficiency and high output power, low pump threshold, narrow line width, and tunable wavelength. , A considerable number of ionic doped crystals show excellent optical performance and are treated as the major choice of laser crystals. − For instance, the KCl–NaCl eutectic salt is an infinite solid solution from the phase diagram, which means potassium and sodium ions can dope each other in the lattice after cooling from a high temperature liquid phase to a solid state . The KCl crystal doped with NaCl to form the defect center can be used as color center laser crystals.…”