CHENG Pan,YANG Feng-jing,ZHOU Zi-zhong,HUANG Bo,WU Li-bo,ZHOU Ya-xun.Enhancement of 2.0 ?m fluorescence emission in new Ho3+/Tm3+/Yb3+ tri-doped tellurite glasses[J].Optoelectronics Letters,2016,12(5):340-343 Enhancement of 2.0 ?m fluorescence emission in new Ho3+/Tm3+/Yb3+ tri-doped tellurite glasses Author Name Affiliation CHENG Pan  College of Information Science and Engineering, Ningbo University, Ningbo 315211, China  YANG Feng-jing  College of Information Science and Engineering, Ningbo University, Ningbo 315211, China  ZHOU Zi-zhong  College of Information Science and Engineering, Ningbo University, Ningbo 315211, China  HUANG Bo  College of Information Science and Engineering, Ningbo University, Ningbo 315211, China  WU Li-bo  College of Information Science and Engineering, Ningbo University, Ningbo 315211, China  ZHOU Ya-xun  College of Information Science and Engineering, Ningbo University, Ningbo 315211, China  Abstract:       For enhancing the 2.0 ?m band fluorescence of Ho3+, a certain amount of WO3 oxide was introduced into Ho3+/Tm3+/Yb3+ tri-doped tellurite glass prepared using melt-quenching technique. The prepared tri-doped tellurite glass was characterized by the absorption spectra, fluorescence emission and Raman scattering spectra, together with the stimulated absorption, emission cross-sections and gain coefficient. The research results show that the introduction of WO3 oxide can further improve the 2.0 ?m band fluorescence emission through the enhanced phonon-assisted energy transfers between Ho3+/Tm3+/Yb3+ ions under the excitation of 980 nm laser diode (LD). Meanwhile, the maximum gain coefficient of Ho3+ at 2.0 ?m band reaches about 2.36 cm-1. An intense 2.0 ?m fluorescence emission can be realized . Hits: 3984 Download times: 0 View Full Text    Download reader