Quantum efficiencies of near-infrared emission from Ni2+-doped glass-ceramics

Optical and structural properties of Ni2+-doped magnesium gallate polycrystalline samples

“…This quality is not observed in other ions of transition metal. The more common luminescence of the Ni 2+ in octahedral sites is around 1000 nm wavelength [7,30]. In the earlier paper about MgGa 2 O 4 :Ni 2+ [30], the authors showed the Ni 2+ luminescence in octahedral sites only in 1300 nm.…”

Optical properties of Ni-doped MgGa2O4 single crystals grown by floating zone method

“…The spectroscopy of Ni 2þ -doped optical materials has received much attention in recent years [1][2][3][4][5]. The initial and terminal states of the electronic transition are strongly coupled to the lattice phonon modes and the associated emission bandwidth becomes much broader than that of rare-earth ions such as Er 3þ , Nd 3þ and Pr 3þ and so on.…”

Optical absorption and structure of impurity Ni2+ center in tungstate–tellurite glass

“…[21][22][23]). The bands correspond to spin-allowed E1 transitions from the ground state, 3 A 2g ( 3 F), to the excited states, 3 F 2g ( 3 F) ((a) transition in Fig.…”