Absorption and mid-infrared emission spectroscopy of Dy3+ in Ge-As(or Ga)-S glasses

Luminescence properties of Dy3+ ions in a variety of borate and fluoroborate glasses containing lithium, zinc, and lead

“…The emission spectra corresponding to 4 F 9/2 → 6 H J (J = 7/2, 9/2, 11/2, 13/2, and 15/2) transitions of Dy 3+ ions in the title glasses are very similar and are comparable to those obtained for other reported Dy 3+ :glasses [2][3][4][5][6][7][8][9][10][11][12][13][14], except small changes in intensity and shifts in emission bands. Fig.…”

“…In the present work, the fluorescence decay curves of the 4 F 9/2 level and yellow-to-blue intensity ratios have been determined in a variety of Dy 3+ doped borate and fluoroborate glasses and are compared with those reported for other Dy 3+ :glasses [2][3][4][5][6][7][8][9][10][11][12][13][14] to understand/estimate the property-composition relation and in turn to identify better glass composition.…”

“…Although some spectroscopic studies have been performed on this ion [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16], a detailed analysis of the fluorescence decay curves versus glass composition and concentration has not, to our knowledge, been established/understood yet. In the present work, the fluorescence decay curves of the 4 F 9/2 level and yellow-to-blue intensity ratios have been determined in a variety of Dy 3+ doped borate and fluoroborate glasses and are compared with those reported for other Dy 3+ :glasses [2][3][4][5][6][7][8][9][10][11][12][13][14] to understand/estimate the property-composition relation and in turn to identify better glass composition.…”

Radiative emission probabilities of Dy3+-doped alkali borate and fluoroborate glasses

“…Glasses offer as a medium for the production of optical devices that are both small and efficient. Electronic transitions between several pairs of energy levels of Dy 3+ ion which are capable of emitting mid-infrared fluorescence around 2.9 and 4.4 m due to the 6 H 13/2 → 6 H 15/2 and 6 H 11/2 → 6 H 13/2 transitions, respectively, were reported in literature [2][3][4]. Radiative transition rates for several excited states were evaluated [5][6][7][8][9] from the absorption spectra of Dy 3+ ions in different glasses using the Judd-Ofelt theory [10,11].…”

Controlling fluorescence lifetime of rare-earth element in amorphous inorganic solids via very small compositional adjustments

“…13 The measured lifetime of the 1.3-m emission in some representative sulfide glasses is only ϳ35 s indicating the quantum efficiency is quite low. 14,15 To reduce the MPR low-phonon-energy hosts are often considered. However, in general it is observed that the thermal and mechanical stabilities of a host medium get worse as the phonon energy of the host is lowered.…”