Abstract
The spectroscopic properties of lithium borate glasses as a function of Nd3+ ions concentration were reported. Optical absorption spectra of these glasses showed a number of absorption bands in ultra violet and visible region. Optical absorption edge was found to shift towards the longer wavelength (red shift) with increase in Nd2O3. Luminescence spectra revealed three major bands at 902, 1063 and 1334 nm which was due to 4F3/2→4I9/2, 11/2 &13/2 transitions of Nd3+ ions. Luminescence intensity was maximum for 1 mol.% Nd2O3 and further increase in Nd2O3 resulted in luminescence quenching. The luminescence quenching behavior at higher concentration of Nd2O3 was attributed to the Nd3+-Nd3+ interaction in the glass matrix. An absorption and emission property of these glasses suggested that these glasses could be useful for 1.06 μm infrared laser applications.
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