Investigation of luminescence parameters of novel glasses with composition TeO2-ZnO-NaF-MoO2-Er2O3 as laser material
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AbouDeif, Y. M.
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King Khalid Univ, RCAMS, Abha 61413, Saudi Arabia
King Khalid Univ, Fac Sci, Dept Phys, POB 9004, Abha, Saudi ArabiaKing Khalid Univ, RCAMS, Abha 61413, Saudi Arabia
AbouDeif, Y. M.
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Yousef, El Sayed
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King Khalid Univ, RCAMS, Abha 61413, Saudi Arabia
King Khalid Univ, Fac Sci, Dept Phys, POB 9004, Abha, Saudi ArabiaKing Khalid Univ, RCAMS, Abha 61413, Saudi Arabia
Fluoroquatemary glasses within system 70TeO(2)-10ZnO-10NaF-(10-x)MoO2-xEr(2)O(3) doped with different concentration of xEr(2)O(3) ions were prepared by using melt- quenching technique. The amorphous nature of the glasses confirmed by using X-ray diffraction. Physical parameters viz.: density (rho), molar volumes (V-m), refractive index (n), an optical energy gap (Eg) and Urbach energy (Delta E) values of prepared glasses were evaluated. Moreover, the Judd-Ofelt parameters Omega(2), Omega(4), Omega(6), the oscillator strength type transition probabilities, S-meas, S-cab spectroscopic quality factors, X, branching ratio, beta(R) and radiative lifetimes, tau(R), of several excited states of Er3+ have been computed. The gain cross-section of laser transition level from I-4(13/2)-> I-4(15/2) and stimulated emission cross-section estimated with different concentration of Er2O3 ions in all present glasses. Here the spectroscopic properties indicate that these glasses doped with Er3+ are a promising candidate for optical applications.