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Optical properties and spectroscopic study of different modifier based Pr(3+):LiFB glasses as optical amplifiers
A Balakrishna1, S Babu2, Vinod Kumar3
1Department of Physics, Sri Venkateswara University, Tirupati 517 502, India; Department of Physics, University of the Free State, Bloemfontein ZA9300, South Africa.
Summary
This study characterizes novel Pr(3+) doped lithium fluoro borate (LiFB) glasses. Praseodymium-doped LiFB glasses show potential for optical amplification, particularly at 488 nm.
Area of Science:
- Materials Science
- Solid State Physics
- Photonics
Background:
- Rare-earth doped glasses are crucial for optical applications.
- Lithium fluoro borate (LiFB) glasses offer unique host properties.
- Praseodymium (Pr3+) ions exhibit interesting luminescence characteristics.
Purpose of the Study:
- To synthesize and optically characterize Pr3+ doped LiFB glasses with varying compositions.
- To investigate the structural and optical properties of these novel glass matrices.
- To evaluate their potential for laser applications and optical amplification.
Main Methods:
- Glass synthesis with six different chemical compositions.
- Characterization using XRD, SEM, FTIR, optical absorption, and photoluminescence.
- Application of Judd-Ofelt theory to determine spectroscopic and radiative properties.
Main Results:
- Optical absorption and luminescence spectra of Pr3+ ions were analyzed.
- Spectroscopic parameters (Racah, spin-orbit, Judd-Ofelt) were calculated.
- High branching ratios and stimulated emission cross-sections for the (3)P0→(3)H4 transition were observed in Pr3+:LiFB(Mg-Ca) glass.
Conclusions:
- Pr3+-doped LiFB glasses exhibit promising optical properties for laser excitation.
- The Pr3+:LiFB(Mg-Ca) and Pr3+:LiFB(Cd-Pb) glasses show potential for optical amplification at 488 nm.
- These materials are suitable for developing new photonic devices.
