Abstract
Detailed spectroscopic investigations are made for a new laser material, a Nd3+-ion doped YGaO3 garnet crystal with disordered structure, grown from the physicochemical Y2O3-Ga2O3 system with sesquioxide relation close to 1:1. Following absorption and luminescence spectral analyses, the Stark splitting of the 4F3/2 and 4Ij’ manifolds of Nd3+ activators are measured with high accuracy. Between the Stark levels of two near-infrared laser channels (4F3/2→4I11/2 and 4F3/2→4I13/2) low-threshold continuous wave stimulated emission was excited at 300 K. Some spectroscopic characteristics, such as radiative lifetime of the initial laser 4F3/2 state, intermanifold and inter-Stark luminescence branching ratios, linewidths, spontaneous transition probabilities and peak and effective cross-sections of induced transitions are also determined. These parameters are necessary for a theoretical description of the functional properties of Nd3+:YGaO3 lasers.
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Kaminskii, A.A., Ueda, Ki., Temple, D. et al. Spectroscopy and Continuous Wave Near-Infrared Stimulated Emission of New Yttrium Gallium Garnet {Y3}[Y, Ga](Ga3)O12:Nd3+ (YGaO3:Nd3+). OPT REV 7, 101–111 (2000). https://doi.org/10.1007/s10043-000-0101-2
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DOI: https://doi.org/10.1007/s10043-000-0101-2