Alkali metal quaternary chalcogenides and process for the prepar

Details Alkali metal quaternary chalcogenides and process for the prepar Alkali metal quaternary chalcogenides and process for the prepar

1996-02-26

1997-04-08

Tucker, Philip

Compositions

Light transmission modifying compositions

252584, 252587, 423508, 423511, F21V 900, F21V 904, C01B 1900, C01B 1700

Patent

active

056184719

ABSTRACT:
Alkali metal quaternary chalcogenides and process for the preparation. The chalcogenides have the formula A.sub.x B.sub.y C.sub.z D.sub.n containing (CD.sub.4).sup.4- or (C.sub.2 D.sub.6).sup.4- ions where A is selected from the group consisting of an alkali metal and a mixture of alkali metals, B is selected from the group consisting of mercury, zinc and manganese, C is a metal selected from the group consisting of germanium and tin and D is selected from the group consisting of sulfur and selenium, wherein x, y, z and n are molar amounts which provide non-linear optical transmission properties. These chalcogenides are useful as non-linear optical transmission crystals.

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