Synthesis and optical behavior of neodymium ion doped borophosphate glass for laser applications

• Published in: Optik (Stuttgart) 2023-11, Vol.291, p.171230, Article 171230
• Main Authors: Kiwsakunkran, N., Chanthima, N., Kothan, S., Kim, H.J., Kaewkhao, J.
• Format: Article
• Language: English
• Subjects: Glasses; Judd-Ofelt; Luminescence; Neodymium
• ISSN: 0030-4026; 1618-1336
• DOI: 10.1016/j.ijleo.2023.171230

Nd3+ ion doped lithium aluminum gadolinium borophosphate glasses were synthesized by melt quenching technique. The hypersensitive transitions were identified in the absorption spectra for ultraviolet (UV), visible (Vis) and near infrared (NIR) region, which the highest intensity is recorded at the transitions 4I9/2→4D5/2, 4I9/2→4G5/2 and 4I9/2→4F5/2 with wavelengths of 352, 582 and 804 nm, respectively. The spectroscopic properties of emission spectra in Nd3+ doped present glasses were investigated under 808 nm laser excitation and shows the strongest intensity at 1063 nm, which corresponding the transition 4F3/2→4I11/2. Furthermore, JO parameters (Ω2, Ω4 and Ω6) are produced, which are then utilized to examine the radiative characteristics of Nd3+ doped glasses for example radiative transition probability (AR), radiative lifetimes (τrad), branching ratios (β), gain bandwidth (Δλeff×σe), optical gain (σe×τrad) and emission cross-section (σe). The results demonstrated that the LBPNd0.5 glass might be used in laser applications around 1.058 µm region, which represent highest stimulated emission cross-section (53.49 ×10–21 cm2), higher branching ratio (>0.5), highest quantum efficiency (84.58%), lower non-radiative decay rates (720 s−1) compared with other glasses. •Glasses doped with Nd3 + ion prepared and investigated.•NIR emission at 1058 nm shows the strongest intensity.•Judd-Ofelt parameters showed Ω6 > Ω2 > Ω4 trend.•Radiative properties displayed highest values in transition 4F3/2→4I11/2.•Highest quantum efficiency of LBPNd0.5 glass was found to be 84.58% for 0.5 of Nd2O3.