Spectroscopy and Energy Transfer in Yb~(3+) and Tm~(3+) Co-doped Gd_3Ga_5O_(12) Crystal

• 作 者: 陈贵堂 周涵 吕万聪 王燕 游振宇 李坚富 朱昭捷 涂朝阳
• 机 构: Key Laboratory of Materials Chemistry and Physics,Fujian Institute of Research on the Structure of M
• 出 处: 结构化学
• 发表日期: 2010年03期
• 关键词: branching radiative oscillator Czochralski decay Crystal and Tm tunable excited

Yb3+/Tm3+ co-doped Gd3Ga5O12 single crystal with a dimension of Φ30mm×20mm was grown successfully by Czochralski method.The absorption spectrum was recorded at room temperature and used to calculate the absorption cross-section.Based on the Judd-Ofelt(J-O) theory,we obtained the three intensity parameters and spectral parameters of this crystal,such as the line strengths,oscillator strengths,radiative probabilities and radiative lifetimes as well as the fluorescent branching ratios.Room temperature fluorescence spectra and luminescence decay curves were recorded.The energy transfer between Yb3+-Tm3+ was observed and the mechanism was discussed.The stimulated emission cross-section of the 3F4→3H6 transition was calculated by the Füchtbauer-Ladenburg(F-L) equation.The potential laser gains for this transition were also investigated.This crystal is promising as a tunable infrared laser crystal at 2.0 μm.

Yb3 + / Tm3 + co-doped Gd3Ga5O12 single crystal with a dimension of Φ30 mm × 20 mm was grown successfully by Czochralski method. The absorption spectrum was recorded at room temperature and used to calculate the absorption cross-section. Based on the Judd-Ofelt (JO) theory, we obtained the three intensity parameters and spectral parameters of this crystal, such as the line strengths, oscillator strengths, radiative probabilities and radiative lifetimes as well as the fluorescent branching ratios. Room temperature fluorescence spectra and luminescence decay curves were recorded. energy transfer between Yb3 + -Tm3 + was observed and the mechanism was discussed. The stimulated emission cross-section of the 3F4 → 3H6 transition was calculated by the Füchtbauer-Ladenburg (FL) equation. The potential laser gains for this transition were also investigated.This crystal is promising as a tunable infrared laser crystal at 2.0 μm.