PREPARATION OF Rb2NaYF6:Ce3 + AND Cs2NaYF6:Ce3 + - A PROSPECT FOR TUNABLE LASERS IN THE BLUE-GREEN WAVELENGTH.

Article abstract of DOI:10.1016/0022-5088(85)90332-7

A systematic study of the systems RbF-NaF-YF//3 and NaF-CsF-YF//3 has been made in order to synthesize Ce**3** plus -doped Rb//2NaYF//6 and Cs//2NaYF//6. Based on preliminary results of the absorption fluorescence efficiency, lifetime, and excited-state absorption, we conclude that a series of compounds (in the form of single crystals) of the general form A//2BYF//6:Ce**3** plus is a worthy prospect for a broad-band, wavelength tunable laser from 400 to 480 mu m which makes it attractive for optical communication.