Spectral Properties of Nd³⁺-Doped RO·Na₂O·Al₂O₃·P₂O₅ (R=Mg, Ca, Ba) Glass System

Abstract

The dependence of spectral properties of the Nd3+-doped (45- x)RO· xNa2O·2.5Al2O3·52.5P2O5 (R=Mg, Ca, Ba, 0≤x ≤31, mol%) glasses on RO and on its substitution with Na2O was investigated. Absorption, fluorescence spectra and lifetimes were measured. Both the stimulated emission cross section and the spontaneous emission probability for the 4F3/2→4I11/2 transition of Nd3+ in glass were calculated. The results indicate that the effect of RO depends on its ionic field strength and that the substitution of RO with Na2O loosens the glass structure so as to lower the degree of disorder of the phosphate chain structure. A stimulated emission cross section as large as 4.2×10-20 cm2 and half-lifetime concentration as high as 8×1020 ions/cm3 were obtained.

Er3+and Yb3+concentration effect in the spectroscopic properties and energy transfer in Yb3+/Er3+codoped tellurite glasses

“…The glass former is TeO 2 and several glass network modifiers have been used. Alkalis are well-known modifiers widely used in phosphate glasses where spectroscopic, thermo-mechanical and physical properties have been modified [16][17][18]. Because of the ion size and electronic properties, each ion modifies the glass properties in a different way.…”

Spectroscopic Studies of Er³⁺-Yb³⁺ Codoped Multicomposition Tellurite Oxide Glass

“…TiO 2 was also added to further enhance the glass stability and refractive index which could lead higher radiative transition probabilities [16][17][18]. Furthermore the incorporation of Na 2 O into the glass may improve the rare-earth solubility for higher usage of dopant concentration which is important for the implementation of high efficiency short length fiber amplifiers [19][20][21].…”

SPECTROSCOPIC PROPERTIES OFB2O3–PbO–Nd2O3GLASSES

“…[1][2][3][4][5][6] Oxide glasses have the advantages of compositional diversity to optimize their physical properties. 7 It is well known that good quality borate glasses are produced easily and cheaply.…”