Provided is a small-diameter chalcogenide glass material having excellent weather resistance and mechanical strength and being suitable as an optical element for an infrared sensor. The chalcogenide glass material has an unpolished side surface, a pillar shape with a diameter of 15 mm or less, and a composition of, in terms of % by mole, 40 to 90% S+Se+Te and an inside of the glass material is free of stria with a length of 500 m or more.

The invention relates to Cr.sup.2+:ZnSe core optical fibers and methods of fabricating thereof, including a hybrid physical-chemical vapor deposition reaction. The invention relates also to Cr.sup.2+:ZnSe optical fiber lasers, in particular to a crystalline semiconductor optical fiber laser.

The invention relates to Cr.sup.2+:ZnSe core optical fibers and methods of fabricating thereof, including a hybrid physical-chemical vapor deposition reaction. The invention relates also to Cr.sup.2+:ZnSe optical fiber lasers, in particular to a crystalline semiconductor optical fiber laser.

Disclosed herein are methods for producing glass articles by hot-melt processing techniques. The methods involve the use of arsenic-free chalcogenide glasses. Despite the absence of arsenic, the chalcogenide glasses have low characteristic temperatures and are stable against crystallization. The low characteristic temperatures render the glasses capable of being hot-melt processed using conventional equipment. The glasses disclosed herein are suitable for the fabrication of optical devices, including but not limited to IR-transmitting optical devices.

A solid state electrolyte including an oxy-sulfide glass or glass ceramic, solid state electrolyte layer having a thickness in the range of ten micrometers to two hundred micrometers is provide. The composition of the electrolyte layer is the reaction product of a mixture initially including either a glass former including sulfur or a glass co-former including sulfur, and a glass modifier including Li.sub.2O or Na.sub.2O. The solid-state electrolyte layer is further characterized as having a wholly amorphous microstructure or as having small recrystallized regions separated from each other in an amorphous matrix, the recrystallized regions having a size of up to five micrometers. The solid-state electrolyte layer includes mobile lithium ions or mobile sodium ions associated with sulfur anions chemically anchored in the microstructure.

Provided is a ceramic complex having high luminous characteristics. Proposed is a ceramic complex including a rare earth aluminate fluorescent material, glass, and calcium fluoride, wherein, when the total amount of the rare earth aluminate fluorescent material, the glass, and the calcium fluoride is taken as 100% by volume, the content of the rare earth aluminate fluorescent material is in a range of 15% by volume or more and 60% by volume or less, the content of the glass is in a range of 3% by volume or more and 84% by volume or less, and the content of the calcium fluoride is in a range of 1% by volume or more and 60% by volume of less.

A laser glass doped with high concentration of mid-infrared fluoroindate and a preparation method thereof are provided in the present application, belonging to the technical field of luminescent glass. The laser glass doped with high concentration of mid-infrared fluoroindate includes the raw materials in parts by mole percentage: 27-38 parts of InF.sub.3, 13 parts of ZnF.sub.2, 10 parts of GdF.sub.3, 19 parts of BaF.sub.2, 5 parts of CaF.sub.2, 10 parts of SrF.sub.2, 5-15 parts of Al(PO.sub.3).sub.3 and 1-11 parts of ErF.sub.3.

The present disclosure relates to a chalcogenide glass composition and a lens including a molded article of the same, which are capable of guaranteeing excellent refractive index, Vickers hardness, and price competitiveness without including an element such as arsenic harmful to the human body.

A quantum memory system includes a chalcogenide optical fiber link, a magnetic field generation unit and a pump laser. The chalcogenide optical fiber link includes a photon receiving end opposite a photon output end and is positioned within a magnetic field of the magnetic field generation unit when the magnetic field generation unit generates the magnetic field. The pump laser is optically coupled to the photon receiving end of the chalcogenide optical fiber link. The chalcogenide optical fiber link includes a core doped with a rare-earth element dopant. The rare-earth element dopant is configured to absorb a storage photon traversing the chalcogenide optical fiber link upon receipt of a first pump pulse output by the pump laser. Further, the rare-earth element dopant is configured to release the storage photon upon receipt of a second pump pulse output by the pump laser.

Disclosed herein are seals for liquid-tight bonding of an optical window comprising a BiIn alloy. Also disclosed are optical cells comprising the BiIn alloy seals to provide a liquid-tight seal between a cell housing and a drilled optical window.