| Literature DB >> 19771010 |
Abstract
The codoping of a heavy-metal fluoride glass by two rare-earth ions, erbium and ytterbium, permits the semiconductor laser infrared excitation of two visible neighboring fluorescence lines of erbium by upconversion, the intensity ratio of which is a single variable function of temperature.Entities:
Year: 1990 PMID: 19771010 DOI: 10.1364/ol.15.001100
Source DB: PubMed Journal: Opt Lett ISSN: 0146-9592 Impact factor: 3.776