Two Micrometer Fluorescence Emission And Energy Transfer In Yb3+/Ho3+ Co-Doped Lead Silicate Glass

Enhanced 2.0um and visible up-conversion emissions from Ho3+ via Yb3+ sensitization in lead silicate glasses have been obtained under the excitation of 980-nm laser diode. The possible energy transfer mechanism has been analyzed based on the photoemission spectroscopy and lifetime measurement. The lifetime of Ho3+:5I7 laser upper level has also been measured. Based on the absorption spectra, Judd-Ofelt parameters, spontaneous emission probability, the absorption, emission cross sections, and gain coefficients have been calculated and analyzed. The results indicate that the Yb3+/Ho3+ co-doped lead silicate glass has potential application in mid-infrared wavelengths.