Synthesis of efficient ZnO-based random lasing medium using laser-induced air breakdown processing
Synthesis of efficient ZnO-based random lasing medium using laser-induced air breakdown processing
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DOI：
10.1063/1.2809606
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发表时间：
2007-11-12
影响因子：
4
通讯作者：
Meunier, M.
中科院分区：
文献类型：
--
作者：
Kabashin, A. V.;Trudeau, A.;Meunier, M.
报道了一种简单的局部图形化激光辅助方法，将块状金属Zn转变为高效的ZnO基随机激光介质。该方法使用CO2激光诱导空气击穿的等离子体来处理Zn靶的表面，从而将其转化为多孔的纳米结构ZnO层，该层在紫外线（380 nm）下表现出强激子光致发光带。我们表明，合成的ZnO基材料可以作为一种有效的随机激光介质，同时强烈散射和放大泵浦光，导致激子带内的几个激光发射窄（< 0.5 nm）线的无镜产生。(c)2007年，美国物理学会。
A simple local patterning laser-assisted method to transform bulk metallic Zn into a highly efficient ZnO-based random lasing medium is reported. The method uses the plasma of CO2 laser-induced air breakdown to treat the surface of a Zn target and thus transform it into a porous, nanostructured ZnO layer, which exhibits a strong exciton photoluminescence band in the UV (380 nm). We show that the synthesized ZnO-based material can work as an efficient random lasing medium, simultaneously strongly scattering and amplifying pumping light, leading to a mirrorless generation of few laser emission narrow (< 0.5 nm) lines within the exciton band. (c) 2007 American Institute of Physics.