Ho/Yb codoped silicate glasses for 2m emission performances.
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This paper discuss a series of Ho/Yb codoped silicate glasses prepared by the melting method. 2 m emissions of the samples are observed under the pump of 980 nm LD. The Judd-Ofelt parameters (()) and radiative properties are calculated and analyzed; the spontaneous transition probability can reach 78.71s. From the fluorescence spectra, the peak absorption and emission cross section of Ho are 2.3610 and 5.0510 cm, respectively. In addition, we analyze the energy transfer process of Yb:F(5/2) level to Ho:I level. Considering the luminance properties and good thermal property, we indicate that Ho/Yb codoped silicate glass is a potential laser glass for the efficient 2 m laser.