公开(公告)号：US10988406B2

公开(公告)日：2021-04-27

申请号：US16465424

申请日：2018-05-21

Applicant: KOREA PHOTONICS TECHNOLOGY INSTITUTE

Inventor： Ju Hyeon Choi ,  Jung Whan In ,  June Park ,  Eui Sam Lee

IPC: C03C3/247 ,  C03C13/04

Abstract: Disclosed is fluorophosphate glasses for an active device, the fluorophosphate glasses including: a metaphosphate composition including Mg(PO3)2 of about 20 mol % to about 60 mol %; a fluoride composition including BaF2 of about 20 mol % to about 60 mol % and CaF2 of 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).

公开(公告)号：US10941072B2

公开(公告)日：2021-03-09

申请号：US16465432

申请日：2018-05-19

Applicant: KOREA PHOTONICS TECHNOLOGY INSTITUTE

Inventor： Ju Hyeon Choi ,  Jung Whan In ,  Yeon Hwang ,  Young Bok Kim

IPC: C03C3/247 ,  C03C4/12 ,  C03C13/04

Abstract: The disclosed fluorophosphate glasses for an active device include: a metaphosphate composition including Al(PO3)3; a fluoride composition including BaF2 and SrF2; and a dopant composed of ErF3 and YbF3, and have thermal and mechanical properties to be able to be used as a glass base material for an active device (e.g., optical fiber laser), have a high emission cross-section characteristic, have a reinforced upconversion and downconversion emission characteristic, and have high sensitivity S in a cryogenic environment.