2µm emission property in Tm-Ho co-doped fluorophosphate glasses
2μm emission spectra of Tm-Ho co-doped fluorophosphate glasses are measured and investigated. When doping 4mol% TmF<inf>3</inf> and 1mol%HoF<inf>3</inf>, the most intense 2.0μm emssion is achieved. Combining the energy transfer processes, the reason is discussed.