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Nonlinear phenomena from a PIC-attached gold tip using a plasmonic-whispering gallery mode hybrid system

机译:使用等离子回音画廊模式混合系统的,带有PIC的金尖端的非线性现象

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We proposed a plasmonic-WGM hybrid system composed of a tapered-fiber-coupled microsphere resonator and a PIC-attached gold tip to focus the incident light into a nanoscale domain (~728.8 nm~2) with high coupling efficiency of ~80.3 % and the Q factor of ~1.9×10~6. In order to experimentally verify the strong interaction between light and matter owing to efficient excitation of localized surface plasmon at the gold-coated tip, we demonstrated to observe two-photon excited fluorescence from PIC dye molecules attached on the gold-coated tip even under a weak CW excitation condition via a tapered-fiber-coupled microsphere resonator.
机译:我们提出了由锥形光纤耦合的微球谐振器和PIC附着的金尖端组成的等离激元-WGM混合系统,以将入射光聚焦到纳米级域(〜728.8 nm〜2)中,具有高达〜80.3%的高耦合效率,并且Q因子约为1.9×10〜6。为了实验验证由于在镀金针尖上的局部表面等离子体激元的有效激发,光与物质之间的强相互作用,我们证明了即使在紫外光下,也观察到了附着在镀金针尖上的PIC染料分子的双光子激发荧光锥形光纤耦合微球谐振器产生的弱连续波激发条件。

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