Transparent Glass Ceramics Doped by Chromium(III) and Chromium(III) and Neodymium(III) as New Materials for Lasers and Luminescent Solar Concentrators

摘要

Transparent glass ceramics doped by chromium (III ) and codoped by chromium (III) and neodymium (III) having the structure of spinel, gahnite, petalite and mullite were prepared. Steady state spectroscopy (absorption and emission) as well as time resolved spectroscopy were studied at room temperature and varying temperatures down to that of liquid helium. Quantum efficiency of chromium (III) at room temperature is high, between 0.9 and 1.0, in mullite glass ceramics. Cross section for laser and laser threshold were calculated. The potential application of these materials for tunable lasers in the red and near infrared is described. Glass, Ceramics, Chromium, Tunable lasers. (mjm)