Shi H F, Lin P J, Yang J X, Yuan J L, Pun E Y B, Song Y, Zhao X, Lin H
School of Textile and Material Engineering, Dalian Polytechnic University, Dalian, 116034, P.R. China.
Faculty of Maritime and Transportation, Ningbo University, Ningbo, 315832, P.R. China.
Sci Rep. 2019 Dec 30;9(1):20372. doi: 10.1038/s41598-019-56902-0.
Adaptive fluoride ceramic with glass forming layer (GC-Er) used in laser anti-escaping has been prepared by one-step synthesis, and the thickness of glass layer is identified as ~0.41 mm. Blue, green and red emissions of Er/Yb codoped fluoride ceramic (C-Er) and glass layer (G-Er) have been investigated under ~980 nm laser pumping. With the forming of thin glass layer on ceramic surface, the absorption intensities on diffuse reflection of GC-Er at 974 nm and 1.53 μm increase by 48% and 53% than those of C-Er. Excited by a 979 nm laser, the presence of the glass layer increases the absolute absorption rate in spectral power from 75% in C-Er to 83% in GC-Er, which is consistent with the improvement in the absorbed photon number. In addition, the quantum yield of GC-Er complex is raised by 28.4% compared to the case of ceramic substrate by photon quantification. Intense absorption-conversion ability and efficient macroscopical anti-escaping effect confirm the superiority of ingenious structure in the fluoride ceramics with glass forming layer, which provides a new approach for developing the absorption-conversion materials of anti-NIR laser detection.
采用一步合成法制备了用于激光防逃逸的具有玻璃形成层（GC-Er）的自适应氟化物陶瓷，玻璃层厚度确定为0.41 mm。研究了在980 nm激光泵浦下，铒/镱共掺杂氟化物陶瓷（C-Er）和玻璃层（G-Er）的蓝光、绿光和红光发射。随着陶瓷表面薄玻璃层的形成，GC-Er在974 nm和1.53μm处的漫反射吸收强度比C-Er分别增加了48%和53%。在979 nm激光激发下，玻璃层的存在使光谱功率中的绝对吸收率从C-Er中的75%提高到GC-Er中的83%，这与吸收光子数的增加一致。此外，通过光子量化，与陶瓷基体相比，GC-Er复合物的量子产率提高了28.4%。强烈的吸收-转换能力和高效的宏观防逃逸效果证实了具有玻璃形成层的氟化物陶瓷中巧妙结构的优越性，为开发抗近红外激光探测的吸收-转换材料提供了一种新方法。
