The Effect of Phonon on Dpectroscopic Properties and Energy Transfer Process in Er/Tm Co-doped Bi2O3-Glass
Broadband near-infrared emission has been investigated in Er3+/Tm3+ co-doped two glasses with molar compositions of 65Bi2O3-20B2O3-15Ga2O3 (BBG) and 65Bi2O3-20SiO2-15Ga2O3 (BSG).A broadband emission ranging from 1.35μm to 1.6μm with a full width at half maximum (FWHM) of 163 nm is obtained in 0.2wt% Er2O3 and 1.0wt% Tm2O3 co-doped BSG glass, while the FWHM of the same concentration Er2O3 and Tm2O3 co-doped BBG glass is only 104 nm.Furthermore, the lifetime of Er3+∶ 4I13/2 and energy transfer efficiency from Er3+ to Tm3+ of BSG glass are higher than those of BBG glass.According to the measured mid-infrared transmittance and Raman spectra, the maximum phonon energy of BSG glass is lower than that of BBG glass.The fluorescence decaying behaviors of Er/Tm∶ BSG and Er/Tm∶ BBG glasses have also been discussed.The present work suggests that Er/Tm co-doped BSG glasses can be a potential candidate for broadband integrated amplifier.
Bismuthate glass Broadband emission Phonon energy Fluorescence decay
Fang Yongzheng Zhao Guoying Zhang Na Shen Hui
School of Materials Science and Engineering,Shanghai Institute of Technology,Shanghai 201418,PR China
国内会议
上海
英文
271-277
2014-04-11（万方平台首次上网日期，不代表论文的发表时间）