Optical, Structure and Dielectric Properties of Er3+ Ions Doped Al- Na-K-Ba Phosphate Glasses

Ismail, M.M.; Farouk, H.; Zur, Lidia; Chiasera, Alessandro; Ferrari, Maurizio; Lukowiak, Anna; Ashery, A.; Salem, M. A.; Battisha, I.K.

doi:10.21608/ejchem.2020.27059.2578

Optical, Structure and Dielectric Properties of Er3+ Ions Doped Al- Na-K-Ba Phosphate Glasses

Document Type : Original Article

Authors

¹ National Research Centre, Solid State Physics Department, Physics Research Division,33 El Behooth St., Dokki, Giza, Egypt, (Affiliation ID: 60014618).

² Al AZHAR University, Physics Department, Faculty of Science, Cairo, Egypt.

³ IFN-CNR CSMFO Lab. and FBK Photonics Unit, Povo, Trento, Italy

⁴ Institute of Low Temperature and Structure Research, PAS, Okolna, 2, 50-422, Wroclaw, Poland

10.21608/ejchem.2020.27059.2578

Abstract

Er³⁺-doped Na-Al-K-Ba phosphate glasses were prepared by conventional melt quenching technique. The structure was studied using XRD and it showed that all the samples were in amorphous form. Physical properties such as density and refractive index have been measured. While the dielectric studies were carried out using (KEYSIGHT-E4991B, NOVOCONTROL) over a wide range of frequency extending from 1 MHz up to 1GHz (106 up to 109 Hz) at room temperature (RT). The absorbance spectra were measured and The Judd–Ofelt analysis has been carried out, hence the radiative properties of⁴I_13/2 → ⁴I_15/2 transition were obtained. High radiative and experimental lifetime for the Er3+ ions has been detected. The experimental lifetime and quantum efficiency found to be decreased with increasing Er3+ content. These results obviously indicate that the present glasses may be promising for optical amplifiers as well as laser applications around 1522 nm.

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