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:
Apr. 27, 2021
Filed:
May. 21, 2018
Korea Photonics Technology Institute, Gwangju, KR;
Ju Hyeon Choi, Gwangju, KR;
Jung Whan In, Daejeon, KR;
June Park, Seoul, KR;
Eui Sam Lee, Incheon, KR;
KOREA PHOTONICS TECHNOLOGY INSTITUTE, Gwangju, KR;
Abstract
Disclosed is fluorophosphate glasses for an active device, the fluorophosphate glasses including: a metaphosphate composition including Mg(PO)of about 20 mol % to about 60 mol %; a fluoride composition including BaFof about 20 mol % to about 60 mol % and CaFof about 0 mol % to about 40 mol %; and dopants including rare earth elements, in which there is an effect of increasing a carrier lifetime at a metastable state energy level that is stimulated-emitted due to an efficient energy transfer phenomenon by composition optimization of dopants (e.g. Er and Yb).