title: Ho³⁺/Yb³⁺ codoped silicate glasses for 2  μm emission performances.
abstract: This paper discuss a series of Ho³⁺/Yb³⁺ codoped silicate glasses prepared by the melting method. 2 μm emissions of the samples are observed under the pump of 980 nm LD. The Judd-Ofelt parameters (Ω(λ)) and radiative properties are calculated and analyzed; the spontaneous transition probability can reach 78.71  s⁻¹. From the fluorescence spectra, the peak absorption and emission cross section of Ho³⁺ are 2.36×10⁻²¹ and 5.05×10⁻²¹ cm², respectively. In addition, we analyze the energy transfer process of Yb³⁺:  ²F(5/2) level to Ho³⁺:  ⁵I₆ level. Considering the luminance properties and good thermal property, we indicate that Ho³⁺/Yb³⁺ codoped silicate glass is a potential laser glass for the efficient 2 μm laser.
authors.forename: Ruijie
authors.initials: R
authors.lastname: Cao
authors.forename: Muzhi
authors.initials: M
authors.lastname: Cai
authors.forename: Yu
authors.initials: Y
authors.lastname: Lu
authors.forename: Ying
authors.initials: Y
authors.lastname: Tian
authors.forename: Feifei
authors.initials: F
authors.lastname: Huang
authors.forename: Shiqing
authors.initials: S
authors.lastname: Xu
authors.forename: Junjie
authors.initials: J
authors.lastname: Zhang