Investigation of Green and Red Emission Studies of Ho3+-Doped BCBaSrHo Glasses for Laser Application

The Ho³⁺-ions doped in CaO-SrO-BaO-B₂O₃ glass (BCBaSrHo) has been synthesis to study its emission, absorption, and decay time measurements. JO theory has been used to evaluate various radiative properties of BCBaSrHo. The increase in the density with Ho³⁺-ion concentration implies the tightly packed and compactness of the BCBaSrHo glass structure. The trend observed in JO-parameters are Ω₂ > Ω₄ > Ω₆. Higher value of Ω₂ indicates covalent nature of the bonding between Ho-ligands ions. The photoluminescence (PL) emission spectra of BCBaSrHo glasses have three emission transitions corresponding to transition. The (B_r = 0.63) for ⁵F₅ → ⁵I₈ transition thus BCBaSrHo glass. The ⁵F₄ (⁵S₄) → ⁵I₈ and ⁵F₅ → ⁵I₈ transition has highest value for σ. The CIE-color coordinates are x = 0.42, y = 0.55 for BCBaSrHo(0.5). All these results suggest BCBaSrHo(0.5) glass has potential high-gain and low-threshold application green and red laser.