Enhanced visible green and 1.5 μm radiative emission of Er3+ ions in Li2O-PbO-Al2O3-B2O3 glasses for photonic applications
来源期刊：JOURNAL OF RARE EARTHS2021年第5期
论文作者：Mukesh K.Sahu Sumandeep Kaur Aman Prasad Vinay Kumar A.S.Rao
文章页码：520 - 525
摘 要：A series of Er3+ ions doped lithium lead alumino borate（LiPbAlB） glasses were synthesized via melt quench method and their structural,physical and optical properties were studied.Judd-Ofelt theory in correlation with the emission and absorption profiles was performed for the measurement of various radiative parameters for different transitions of Er3+ doped glasses.The as-prepared glasses show deep green（550 nm） as well as NIR（1532 nm） emission at 380 and 980 nm excitation wavelengths,respectively.The intensity of emission spectra increases with Er3+ ions concentration up to 1.5 mol% and beyond quenching is observed.The Dexter theory applied to the emission profiles reveals the interaction between Er3+ions as dipole-dipole in nature.CIE color coordinates are found to fall in the green region of the visible spectrum.It is observed that 1.5 mol% of Er3+ ions concentration is optimum to exhibit the maximum quantum efficiency,branching ratios,gain bandwidth,emission cross-section,gain crosssection and aptly suitable for visible and NIR photonic applications.
Mukesh K.Sahu2，Sumandeep Kaur2，Aman Prasad2，Vinay Kumar4，A.S.Rao2
2. Department of Applied Physics,Delhi Technological University4. Department of Electronics and Communication Engineering,Graphic Era (Deemed to be University)
摘 要：A series of Er3+ ions doped lithium lead alumino borate（LiPbAlB） glasses were synthesized via melt quench method and their structural,physical and optical properties were studied.Judd-Ofelt theory in correlation with the emission and absorption profiles was performed for the measurement of various radiative parameters for different transitions of Er3+ doped glasses.The as-prepared glasses show deep green（550 nm） as well as NIR（1532 nm） emission at 380 and 980 nm excitation wavelengths,respectively.The intensity of emission spectra increases with Er3+ ions concentration up to 1.5 mol% and beyond quenching is observed.The Dexter theory applied to the emission profiles reveals the interaction between Er3+ions as dipole-dipole in nature.CIE color coordinates are found to fall in the green region of the visible spectrum.It is observed that 1.5 mol% of Er3+ ions concentration is optimum to exhibit the maximum quantum efficiency,branching ratios,gain bandwidth,emission cross-section,gain crosssection and aptly suitable for visible and NIR photonic applications.
关键词：
