【摘要】 测定了晶体的吸收谱 ,计算了 Tm3+,Tb3+离子在 YVO4晶体中的吸收截面 .由积分吸收截面的公式拟合出唯象强度参数Ωt,并应用 Judd- Ofelt理论计算振子强度 f J,J′,辐射跃迁几率 AJ,J′,无辐射跃迁几率ωJ,J′,和荧光辐射寿命τJ,并应用 Dexter理论计算了 Tm3+的3F4→ Tb3+的 7F0 态转移几率 .讨论了双掺 Tm3+,Tb3+钒酸钇 (YVO4)晶体的优点更多还原

【Abstract】 The Absorption spectra is measured. The fluorescence characteristic parameters of Tm\+\{3+\} in Tm\+\{3+\} and Tb\+\{3+\} ions co\|doped YVO4 Crystal for radiative transition probabilities \%A\-\{J,J′\}\%, non\|radiative transition probabilities \%ω\-\{J,J′\}\%, oscillator strengths \%f\-\{J,J′\}\%, fluorescence lifetimes, \%τ\-J\% and absorption cross sections \%σ\-α\% et. al. are calculated by use of Judd\|Ofelt theory, the intensity parameters of Tm3+ and Tb\+\{3+\} are also calculated. The laser transition via Tm\+\{3+\}→Tb\+\{3+\} energy transfers are analyzed by use of Dexter theory, and the advantage of Tm\+\{3+\} and Tb\+\{3+\} ions co\|doped YVO\-4 Crystals are discussed.更多还原