Hoya Optics, Inc.

Hoya Corporation

Yeong Lin

Hisayoshi Toratani

Helmuth E Meissner

A phosphate based laser glass composition for high average power systems including by mol percent 60-66% P.sub.2 O.sub.5, 6-9% Al.sub.2 O.sub.3, 8-12% Li.sub.2 O, 0-15% MgO, 0-15% ZnO, 0-5% B.sub.2 O.sub.3 and 0.1-4%, Nd.sub.2 O.sub.3, with MgO+ZnO totaling 14-16%.

Glass of improved thermal shock resistance for high average power solid

A green optical filter phosphate-based glass having a high near infrared, absorption at about 650 nm to 950 nm and a transmission peak transmission at 550 nm to 560 nm and with the steepest slope of the absorption curve occurring between about 570 nm to 650 nm. The glass composition comprising, in mol %: 50 to 60% P.sub.2 O.sub.5, O to 5% SiO.sub.2, 20 to 33% Li.sub.2 O, 0 to 25% Na.sub.2 O, 1 to 25% K.sub.2 O, 0 to 5% for each of CaO, Bao, SrO and MgO, 7 to 10% Al.sub.2 O.sub.3, 3 to 6% CuO, 0.5 to 1.6% Cr.sub.2 O.sub.3, 0.5 to 2.0% Ho.sub.2 O.sub.3, 0.5 to 2.0 Dy.sub.2 O.sub.3 and 0 to 2.0% Er.sub.2 O.sub.3.

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Sunnyvale, CA, United States of America

Yeong Lin