Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7130956 | Optics & Laser Technology | 2013 | 4 Pages |
Abstract
We report, for the first time, a broadband upconversion emission (800-1000Â nm) in Bi-doped germano-silicate glass optical fibers with excitation in the range of 1515-1585Â nm, which can explain the low laser efficiency at wavelengths longer than 1500Â nm. The mechanism responsible for the emission is two-step upconversion process. The origin of this upconversion luminescence is discussed and new energy transition schemes are proposed.
Keywords
Related Topics
Physical Sciences and Engineering
Engineering
Electrical and Electronic Engineering
Authors
Weiwei Fan, Lin Htein, Bok Hyeon Kim, Pramod R. Watekar, Won-Taek Han,