公开(公告)号：US20200002217A1

公开(公告)日：2020-01-02

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).