Method of making multi-component glass doped with cadmium chalco

Details Method of making multi-component glass doped with cadmium chalco Method of making multi-component glass doped with cadmium chalco

1990-08-30

1992-03-24

Fisher, Richard V.

Glass manufacturing

Processes

Devitrifying glass or vitrifying crystalline glass

65DIG15, 423509, 501 32, 501 40, C03C 1000

Patent

active

050984608

ABSTRACT:
A multi-component glass doped with microparticles of CdS.sub.x Se.sub.y Te.sub.z, which can be used as a material for sharp cut filter, a material for infrared-transmitting filter or a nonlinear optical material. This glass has solved the problems of conventional glasses doped with microparticles, of (a) being low in microparticles concentration and accordingly having a low spectral characteristic when made into a thin filter and (b) being low in microparticles concentration and accordingly having low third-order nonlinearity, by containing microparticles at a high concentration, i.e. 5-50% by weight. The present invention relates to a process for producing the above multi-component glass doped with CdS.sub.x Se.sub.y Te.sub.z microparticles. This has solved the conventional problems that the chalcogen element(s) to constitute the microparticles is (are) vaporized at the step for obtaining a glass melt, by specifying (a) the material to become a glass matrix and (b) the atmosphere used for obtaining a glass melt.

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patent: 3451794 (1969-06-01), Patterson
patent: 3498930 (1970-03-01), Sanefield
patent: 3627573 (1971-12-01), Schottmiller
patent: 3773530 (1973-11-01), Morgan
patent: 3834883 (1974-09-01), Klein
patent: 3901996 (1975-08-01), Hasegawa et al.
patent: 4308171 (1981-12-01), Dines et al.

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