Dynamic tailoring large-area surface plasmon polariton excitation

IF 2 4区 物理与天体物理 Q3 OPTICS Journal of Optics Pub Date : 2024-09-18 DOI:10.1088/2040-8986/ad77e4
Aldo Peña Ramírez, Tingting Zhai, Rafael Salas-Montiel and Víctor Ruiz Cortés
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Abstract

We propose and demonstrate a method for dynamically changing the patterning of the surface plasmon polariton (SPP) excitation over a large area under spatially inhomogeneous polarized illumination. By illuminating a 1D gold grating with shallow rectangular grooves with a spatially structured polarization beam of near-infrared light (780 nm), we selectively excited SPPs on an extended area. The parameters used to fabricate the grating coupler, matched the wave vector of the incident light with that of the SPP to achieve an efficient coupling. The incident wave illuminating the grating is a spatially inhomogeneous polarized beam. We designed local polarization states to control the local excitation of the SPP in order to pattern large areas. For real-time local control of the polarization state of the extended incident beam, we used a setup with a spatial light modulator and quarter-wave plate.
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动态定制大面积表面等离子体极化子激发
我们提出并演示了一种在空间不均匀偏振照明条件下动态改变大面积表面等离子体极化子(SPP)激发模式的方法。通过用一束空间结构偏振的近红外光(780 纳米)照射带有浅矩形凹槽的一维金光栅,我们在更大的面积上选择性地激发了 SPP。用于制造光栅耦合器的参数使入射光的波矢量与 SPP 的波矢量相匹配,从而实现高效耦合。照射光栅的入射波是一束空间不均匀的偏振光。我们设计了局部偏振态来控制 SPP 的局部激发,以实现大面积图案化。为了对扩展入射光束的偏振态进行实时局部控制,我们使用了带有空间光调制器和四分之一波板的装置。
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来源期刊
CiteScore
4.50
自引率
4.80%
发文量
237
审稿时长
1.9 months
期刊介绍: Journal of Optics publishes new experimental and theoretical research across all areas of pure and applied optics, both modern and classical. Research areas are categorised as: Nanophotonics and plasmonics Metamaterials and structured photonic materials Quantum photonics Biophotonics Light-matter interactions Nonlinear and ultrafast optics Propagation, diffraction and scattering Optical communication Integrated optics Photovoltaics and energy harvesting We discourage incremental advances, purely numerical simulations without any validation, or research without a strong optics advance, e.g. computer algorithms applied to optical and imaging processes, equipment designs or material fabrication.
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