Cladding glass ceramic for use in high powered lasers

摘要

A Cu-doped/Fe-doped low expansion glass ceramic composition comprising: - Wt. % - SiO2 50-65 - Al2O3 18-27 - P2O5 0-10 - Li2O 2-6 - Na2O 0-2 - K2O 0-2 - B2O3 0-1 - MgO 0-4 - ZnO 0-5 - CaO 0-4 - BaO 0-5 - TiO2 1-3 - ZrO3 1-3 - As2O3 0-1.5 - Sb2O3 0-1.5 - CuO 0-3 - Fe2O3 0-1 - wherein the total amount of SiO2, Al2O3 and P2O5 is 80-89 wt. %, and said glass ceramic contains as a dopant 0.1-3 wt. % CuO, 0.1-1 wt. % Fe2O3 or a combined CuO+Fe2O3 amount of 0.1-4 wt. %. The glass ceramic composition is suitable for use as a cladding material for solid laser energy storage mediums as well as for use in beam attenuators for measuring laser energy level and beam blocks or beam dumps used for absorbing excess or unused laser energy.