Signature of plasmonic nanoparticles in multi-wavelength low power random lasing

被引:24
作者
Haddawi, S. F. [1 ,2 ,3 ]
Humud, Hammad R. [3 ]
Hamidi, S. M. [1 ]
机构
[1] Shahid Beheshti Univ, Laser & Plasma Res Inst, Magnetoplasmon Lab, Tehran, Iran
[2] Univ Babylon, Dept Laser Phys, Coll Sci Woman, Babylon, Iraq
[3] Univ Baghdad, Dept Phys, Coll Sci, Baghdad, Iraq
关键词
Plasmonic nanoparticles; Random laser; Coherent laser; Core shell; Dye; EMISSION; FILMS;
D O I
10.1016/j.optlastec.2019.105770
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A multi-wavelength plasmonic random lasing is attained by core-shell nanoparticles and the mixture of metallic nanoparticles in the host dye medium. The plasmonic nanoparticles, fabricated using laser ablation in liquid, were mixed in the corresponding dye medium and pumped with green nano-second pulsed laser. Due to this optical pumping process of plasmonic nanoparticles, amplification of the fluorescence and the lasing activity took place due to the localized surface plasmon resonance and scattering of each nanoparticle, core-shell and mixture nanoparticles. Our results show efficient coherent random lasing due to the interface between two different metallic nanoparticles in the middle part of the visible spectral region considering its applicability in the design and fabrication of compact and miniaturized random laser sources.
引用
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页数:14
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