Spectroscopic properties of Nd³⁺-doped barium phosphate glasses for Laser application

P. Ravi¹ , N. Vijaya² , N. Krishna Mohan³

1. BS&H Department, Sri Vasavi Engineering College,Tadepalligudem- 534 101, India.
2. Department of Physics,, Chalapathi Institute of Engineering and Technology Guntur 522016, India.
3. Department of Physics, Akkineni Nageswara Rao college, Gudivada 521301, India.

Correspondence should be addressed to: krishna_nutakki@yahoo.com.

Section:Research Paper, Product Type: Isroset-Journal
Vol.6 , Issue.3 , pp.45-49, Jun-2018

CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i3.4549

Online published on Jun 30, 2018

Copyright © P. Ravi, N. Vijaya, N. Krishna Mohan . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
Barium phosphate glasses doped with varying Nd3+ ions concentration were prepared by melt quenching method and characterized through absorption and luminescence measurements. Judd-Ofelt (JO) intensity parameters were derived from the absorption spectrum of 1.0 mol % Nd2O3 -doped glass. Nd3+ ions exhibit strong near infrared luminescence at 1.06 μm (4F3/2 → 4I11/2) has been obtained for all the glasses upon 808 nm diode laser excitation. Obtained JO parameters and refractive index are used to calculate the radiative properties, such as effective bandwidth (λeff, nm), emission cross-section (σemi, cm2), radiative transition probabilities (AR, s-1) and branching ratio (βR) for the 4F3/2 →4IJ/2 (where J = 9, 11 and 13) transitions of Nd3+ ions. Among three transitions 4F3/2 → 4I11/2 shows higher value of stimulated emission cross-section and branching ratio indicates that the present glasses could be useful for the development of NIR laser at around 1.06 µm.

Key-Words / Index Term :
Glasses, Nd³⁺ ions, Judd–Ofelt analysis, Radiative properties, emission

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