Optical properties of Er3+ doped phosphate glasses

Ismail, Mahmoud Mohammed; Farouk, H.; Salem, M. A.; Ashery, A.; Battisha, I. K.

doi:10.21608/jsrs.2019.58543

Optical properties of Er3+ doped phosphate glasses

Document Type : Original Article

Authors

¹ National Research Centre

² Al AZHAR University, Physics department, faculty of science, Cairo, Egypt.

³ National Research Centre, Solid State Physics Department,Physics Research

⁴ National Research Centre, Solid State Physics Department,Physics Research Division,33 El Behooth St., Dokki, Giza, Egypt, (Affiliation ID: 60014618).

10.21608/jsrs.2019.58543

Abstract

Er³⁺-doped Na-Al-Ba-K phosphate glasses were prepared by
melt quenching technique. The absorbance spectrum was measured and hence the absorption coefficient, absorption cross-secion were calculated. The emission cross-section has been evaluated using Mc-Cumber theory. The gain has been evaluated as a function of population inversion which show that the amplification action would be achieved around 1596 nm for a population inversion of only 20%. The Judd–Ofelt analysis has been carried out and hence the radiative properties of ⁴I_13/2 → ⁴I_15/2 and ⁴S_{3/2 →}⁴I_15/2transitions were obtained. Higher radiative lifetime for the ⁴I_13/2level of Er³⁺ ion has been noticed compared to the other Er³⁺doped glasses. These results clearly indicate that the present glasses are suitable for laser as well as optical amplifiers around 543 nm and 1522nm.

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