Calculations of the transitions intensities in the optical spectra of Dy³⁺:LiYF₄

详细信息    查看全文

• 作者：Brik ; M.G. ; Ishii ; T. ; Tkachuk ; A.M. ; Ivanova ; S.E. ; Razumova ; I.K.
• 关键词：Optical materials ; Optical spectroscopy ; Judd&ndash ; Ofelt theory ; Radiative transitions ; Non-radiative transitions
• 刊名：Journal of Alloys and Compounds
• 出版年：2004
• 出版时间：July 14, 2004
• 年：2004
• 卷：374
• 期：1-2
• 页码：63-68
• 全文大小：158 K

文摘

Optical spectra of Dy³⁺:LiYF₄ (Dy³⁺:YLF) single crystal were analyzed using Judd–Ofelt theory and discrete variational multielectron method (DVME). Oscillator strengths (OS) of transitions up to 39000cm⁻¹ in the absorption spectrum, branching ratios and nonradiative transition rates were calculated; assignment of the absorption transitions was given. A good agreement between calculated and experimental values of branching ratios for transitions from quartet ⁴F⁽³⁾_9/2 to the low-lying sextet levels is demonstrated. Ab initio calculations of OS were performed.