Optical-field-controlled photoemission from plasmonic nanoparticles
Optical-field-controlled photoemission from plasmonic nanoparticles
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DOI：
10.1038/nphys3978
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发表时间：
2017-04-01
期刊：
影响因子：
19.6
通讯作者：
Kaertner, Franz X.
中科院分区：
文献类型：
--
作者：
Putnam, William P.;Hobbs, Richard G.;Kaertner, Franz X.
在高强度下，光与物质的相互作用由激发光的电场控制。例如，当强激光脉冲与原子气体相互作用时，入射电场的各个周期会干扰气体原子，并控制所产生的阿秒持续时间的电波包1，2。这种场控制的光-物质相互作用形成了阿秒科学的基础，最近已经从气体扩展到固态纳米结构3 -18。在这里，我们将这些场控制的相互作用扩展到支持局部表面等离子体共振的金属纳米粒子。我们展示了强场，载波包络相敏光电发射从定制的金属纳米粒子阵列，我们显示的纳米粒子的几何形状和等离子体共振的相敏响应的影响。此外，从技术的角度来看，我们将强场光-物质相互作用推向芯片级。我们将我们的等离子体纳米粒子和实验几何形状集成在紧凑的微型光电设备中，这些设备在真空和环境条件下运行。
At high intensities, light-matter interactions are controlled by the electric field of the exciting light. For instance, when an intense laser pulse interacts with an atomic gas, individual cycles of the incident electric field ionize gas atoms and steer the resulting attosecond-duration electrical wavepackets1,2. Such field-controlled light-matter interactions form the basis of attosecond science and have recently expanded from gases to solid-state nanostructures3-18. Here, we extend these field-controlled interactions to metallic nanoparticles supporting localized surface plasmon resonances. We demonstrate strong-field, carrier-envelope-phase-sensitive photoemission from arrays of tailored metallic nanoparticles, and we show the influence of the nanoparticle geometry and the plasmon resonance on the phase-sensitive response. Additionally, from a technological standpoint, we push strong-field light-matter interactions to the chip scale. We integrate our plasmonic nanoparticles and experimental geometry in compact, microoptoelectronic devices that operate out of vacuum and under ambient conditions.