PHOSPHATE GLASS FOR ABSORBING SHELLS OF DISC ACTIVE ELEMENTS Russian patent published in 2015 - IPC C03C3/19 

FIELD: chemistry.

SUBSTANCE: invention relates to optical materials for high-power pulsed amplifier apparatus. Such materials are phosphate glass with a special composition, used to make absorbing shells for attaching to lateral faces of large-size disc active elements made of concentrated neodymium phosphate glass. The glass composition includes, wt %: P₂O₅ 57.53-63.29, SiO₂ 1.46-1.99, B₂O₃ 0.91-1.10, Na₂O 2.88-3.02, K₂O 4.92-5.10, Al₂O₃ 4.22-6.56, CaO 0.48-0.51, BaO 8.02-18.03, SrO 0.21-8.95, Nd₂O₃ 3.49-3.64, CuO 0.15-0.28 (over 100 wt %).

EFFECT: matching copper-containing phosphate glass for absorbing shells with neodymium phosphate glass on such parameters as the refraction index and coefficient of thermal expansion.

1 tbl, 1 dwg