INFLUENCE OF ALKALI-EARTH IONS ON 1.06 µm NEAR INFRARED EMISSION OF ND3+-DOPED LITHIUM ALUMINOPHOSPHATE GLASS FOR LASING APPLICATION
Influence of Alkali-earth Ions of Nd³⁺-Doped Li-Al-P2O5 Glass
DOI:
https://doi.org/10.55766/sujst10033Keywords:
Alkali Earth Ion, Aluminophosphate glass, Nd3+ doped glass, Near Infrared EmissionAbstract
The influence of the alkali-earth ions (Mg2+, Ca2+, Sr2+) on structural (FTIR) and spectroscopic (optical absorption and near infrared emission) properties of Nd3+-doped lithium aluminophosphate glasses were systematically examined and discussed. Under an excitation wavelength of 580 nm, the emission spectra of Nd3+-doped glasses showed three prominent peaks at 900, 1058, and 1327 nm, it was related to the 4F3/24I9/2, 4I11/2, and 4I13/2 transitions, respectively. It was found that the peak emission intensity occurs at a wavelength of 1058 nm. The were calculated by applying Judd-Ofelt theory to the absorption and emission measurements, which resulted in the radiative transition probability and stimulated emission cross-section being calculated. As a result, when compared to , , and , have a larger compositional dependency on ionic radius and modifier content. In addition, it was found that the stimulated emission cross-section of , respectively. The luminescence intensity is greatly increased, and the underlying mechanism is clearly seen when cationic replacements of Sr2+, Ca2+, and Mg2+ are carried out. The research proved that spectroscopic properties of trivalent Nd3+ depend significantly on the kind of presence of alkali-earth ions in glass host matrices and could be used as a lasing application.
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