2026-10-10T22:49:43Z https://www.scidb.cn/oai

10.57760/sciencedb.00zvg 2026-08-20T15:13:31Z

2026-08-20 Synergistic Enhancement of Dual-Band Stimulated Emission Cross-Sections in Nd-Doped Silica Glass via Effective Linewidth Narrowing by Phosphorus-Iodine Co-Doping doi:10.57760/sciencedb.00zvg en Nd3+ doped quartz glass serves as an important gain medium for dual wavelength laser outputs at 0.9 μ m and 1.06 μ m, and has significant applications in fields such as laser radar, underwater communication, and inertial confinement fusion. However, its 0.9 μ m emission (4F3/2 → 4I9/2) is a quasi three-level transition, which is strongly competitive with the 1.06 μ m four level transition (4F3/2 → 4I11/2); At the same time, the non-uniform broadening of the glass matrix leads to the effective linewidth of the two emission lines being too wide, which seriously restricts the improvement of its stimulated emission cross-section. This article proposes a strategy of using P-I co doping to regulate the local coordination environment of Nd3+. By changing the crystal field symmetry and coordination intensity, the effective linewidth of the emission spectrum can be narrowed. The results showed that P-I co doping narrowed the effective linewidths of the emission spectra in the 0.9 μ m and 1.06 μ m bands by about 20 nm. Based on the F ü chtbauer Ladenburg formula, the narrowed effective linewidth promoted a synergistic improvement in the stimulated emission cross-section of Nd3+, with a 3-fold increase in the stimulated emission cross-section at 0.9 μ m and a 40% increase at 1.06 μ m. This work demonstrates that regulating the local coordination environment of Nd3+through P-I co doping to narrow the effective linewidth is a feasible material design approach for synergistically enhancing the dual wavelength stimulated emission cross-section and improving the spectral performance of neodymium doped quartz glass.  Nd-doped silica glass; local coordination environment; effective linewidth; stimulated emission cross-section Gao Yuelan Dong Hehe Han Liping Zhang Han Wang Shikai Yu Chunlei Hu Lili PUBLIC https://creativecommons.org/licenses/by-nc-nd/4.0/ dataset Science Data Bank