The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 16, 1980
Filed:
Mar. 17, 1976
Tetsuro Izumitani, Hino, JP;
Michitaka Tsuru, Akishima, JP;
Hoya Glass Works, Ltd., Tokyo, JP;
Abstract
A phosphate base laser glass comprising 55-70% P.sub.2 O.sub.5, 1-15% Al.sub.2 O.sub.3, 0-25% Li.sub.2 O, 0-25% Na.sub.2 O, 0-8% K.sub.2 O, the total proportion of Li.sub.2 O, Na.sub.2 O, and K.sub.2 O being 10-25%, 0-15% BaO, 0-15% ZnO, 0-15% CaO, 0-15%, SrO, 0-15% MgO, the total proportion of BaO, ZnO, CaO, SrO, and MgO being 5-15%, 0-5% Y.sub.2 O.sub.3, 0-5% La.sub.2 O.sub.3, 0-5% GeO.sub.2, 0-5% CeO.sub.2, 0-3% Nb.sub.2 O.sub.5, 0-3% MnO.sub.2, 0-2% Ta.sub.2 O.sub.5, 0-1% Sb.sub.2 O.sub.3, and 0.01-5% Nd.sub.2 O.sub.3, all % being mole %. The phosphate base laser glass of this invention has a high induced emission cross section, a low non-linear refractive index coefficient, and excellent acid resistance and divitrification resistance. By replacing partially or wholely one or more of LiO.sub.2, Na.sub.2 O, K.sub.2 O, BaO, ZnO, CaO, SrO, MgO or Al.sub.2 O.sub.3 by LiF, NaF, KF, BaF.sub.2 ZnF.sub.2, CaF.sub.2, SrF.sub.2, MgF.sub.2 or AlF.sub.3, respectively, the above properties of the laser glass are further improved.