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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Optical phase-change in plasmonic nanoparticles by a two-wave mixing
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Optical phase-change in plasmonic nanoparticles by a two-wave mixing

机译：通过双波混合进行等离子体纳米粒子的光学相变

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摘要

Described herein is the optical phase-change and photothermal phenomena induced by a two-wave mixing configuration in a nonlinear optical material. For experimental analysis of these findings, the third-order nonlinear optical response exhibited by bimetallic Au-Pt nanoparticles embedded in a TiO2 matrix was studied. A vectorial two-wave mixing technique was conducted to explore the automatic generation of polarized self-diffraction by the participation of the optical Kerr effect in the samples. Fractional derivative calculations allowed us to identify the physical mechanism responsible for photothermal influence on the third-order nonlinear optical effects in the nanosystems. A 532 nm wavelength emitted by the second harmonic of a nanosecond Nd: YAG laser system was employed as an optical source in our measurements. Based on the importance of the vectorial nature of light for dictating the amplitude of the beams and splitting properties, within this work is highlighted the attractive energy transfer functions and phase modulation that can be envisioned by photothermally-controlled interactions.
机译：这里描述的是由非线性光学材料中的双波混合配置引起的光学相变和光热现象。对于这些发现的实验分析，研究了由嵌入在TiO 2基质中的双金属AU-Pt纳米颗粒表现出的三阶非线性光学响应。进行了矢量两波混合技术，以通过参与样品的光学克尔效应的参与探索偏振自衍射的自动产生。促使我们识别负责对纳米系统中的三阶非线性光学效应的光热影响的物理机制。由纳秒ND的第二次谐波发出的532nm波长：YAG激光系统的测量中的光源是光源。基于光的脉冲幅度的矢量性质的重要性，在该工作中，突出显示了可以通过光热控制的相互作用来设想的吸引力传递函数和相位调制。

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