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The film laser concept has attracted much attention from both fundamental and practical points of view. However, to obtain a very thin film encounters the difficulty in realizing ultrahigh doping level of rare earth ions in a very thin film. In this work, a series of transparent Er3+/Yb3+ co-doped Al2O3-SiO2 / P2O5-SiO2 glass thin films with rare earth ions doping level up to 20 mol% were fabricated by sol-gel spin-coating method. The roughness value of film surface was characterized with AFM technique. The luminescent spectra and the corresponding FWHM of Er3+/Yb3+ co-doped films are compared and some other spectroscopic properties are discussed.
Lisi Xia,Chunlei Yu, andLili Hu
"Sol-Gel derived Al2O3-SiO2 / P2O5-SiO2 glass thin films with ultrahigh doping level of Er3+/Yb3+ ions", Proc. SPIE 11427, Second Target Recognition and Artificial Intelligence Summit Forum, 1142729 (31 January 2020); https://doi.org/10.1117/12.2552233
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