Dynamical Manipulation of Surface Plasmon Polaritons

Wang, Sen; Zhao, Chunying; Li, Xing

doi:10.3390/app9163297

Cited by 22 publications

(10 citation statements)

References 116 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With wavefront shaping by a spatial light modulator (SLM), we can dynamically manipulate the tip-LSP characteristics, such as amplitude, phase, and polarization (see “Methods” for details). We achieve this tip near-field control based on the underlying mechanism of dynamical surface plasmon polariton (SPP) manipulation, as demonstrated recently for the plasmonic metal films 14 – 17 . Briefly, the SPP characteristics can be modulated depending heavily on the spatial coherence and wave-vector condition of the incident beam (see Supplementary Note 1 for details).…”

Section: Resultsmentioning

confidence: 97%

Adaptive tip-enhanced nano-spectroscopy

et al. 2021

View full text Add to dashboard Cite

Tip-enhanced nano-spectroscopy, such as tip-enhanced photoluminescence (TEPL) and tip-enhanced Raman spectroscopy (TERS), generally suffers from inconsistent signal enhancement and difficulty in polarization-resolved measurement. To address this problem, we present adaptive tip-enhanced nano-spectroscopy optimizing the nano-optical vector-field at the tip apex. Specifically, we demonstrate dynamic wavefront shaping of the excitation field to effectively couple light to the tip and adaptively control for enhanced sensitivity and polarization-controlled TEPL and TERS. Employing a sequence feedback algorithm, we achieve ~4.4 × 104-fold TEPL enhancement of a WSe2 monolayer which is >2× larger than the normal TEPL intensity without wavefront shaping. In addition, with dynamical near-field polarization control in TERS, we demonstrate the investigation of conformational heterogeneity of brilliant cresyl blue molecules and the controllable observation of IR-active modes due to a large gradient field effect. Adaptive tip-enhanced nano-spectroscopy thus provides for a systematic approach towards computational nanoscopy making optical nano-imaging more robust and widely deployable.

show abstract

Section: Resultsmentioning

confidence: 97%

Adaptive tip-enhanced nano-spectroscopy

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Therefore, on the tungsten surface, after irradiation by the femtosecond laser, the vertexes of the curved ripples had the most intensive SPPs. The nanoholes are considered to be generated due to the interference between the femtosecond laser and the focused SPPs [32]. When we gradually rotated the HWP2 shown in Figure 1, the local linear polarization of the femtosecond vector beam rotated as a whole, inducing the shift of the nanostructures on the tungsten surface along the direction perpendicular to the target scanning direction, i.e., along the vertical direction shown in Figure 4a.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Compound Structures of Periodic Holes and Curved Ripples Fabricated by the Interference between the Converging Surface Plasmon Polaritons and Femtosecond Laser

2022

View full text Add to dashboard Cite

Non-cylindrical vectorial femtosecond lasers are employed to irradiate tungsten surfaces. Compound nanopatterns composed of periodic nanoholes and semi-circular curved ripples are produced by scanning the target relative to the laser beam. The tangential direction of the curved ripples is perpendicular to the local polarization direction of the vectorial femtosecond laser beam. Therefore, the formation mechanism of the curved ripples can be attributed to the interference between the incident femtosecond laser and the laser-induced surface plasmon polaritons (SPPs). We found that, in addition to the curved ripples, periodic nanoholes with an average diameter of 406 nm also appeared on the target surface, and they all tended to appear at the vertexes of the semi-circular curved ripples, i.e., the converging point of SPPs. Further experiments demonstrated that the location of the periodic nanoholes was totally determined by the polarization state of the incident femtosecond laser. Therefore, we deduced that the convergent SPPs induced by the non-cylindrical vectorial femtosecond laser interfered with the incident laser at the convergent point, leading to the generation of periodic nanoholes. The investigations in this work exhibited the important role of manipulating the propagation of SPPs in femtosecond laser surface structuring, which not only diversifies the surface patterns that can be produced by laser-induced periodic surface structuring (LIPSS) but also provides deep insights in the excitation and propagation dynamics of SPPs.

show abstract

“…With wavefront shaping by a spatial light modulator (SLM), we can dynamically manipulate the tip-SPP characteristics, such as amplitude, phase, and polarization (see Methods for details). We achieve this tip near-field control based on the underlying mechanism of dynamical SPP manipulation, as demonstrated recently for the plasmonic metal films (29)(30)(31)(32). Briefly, the SPP characteristics can be modulated depending heavily on the spatial coherence and wave-vector condition of the incident beam (see SI for details).…”

Section: Tip-enhanced Near-field Spectroscopy With Dynamical Wavefron...mentioning

confidence: 99%

Adaptive tip-enhanced nano-spectroscopy

Lee,

Park,

Choi

et al. 2020

Preprint

View full text Add to dashboard Cite

Tip-enhanced nano-spectroscopy and -imaging, such as tip-enhanced photoluminescence (TEPL), tip-enhanced Raman spectroscopy (TERS), and others (1-4), have become indispensable from materials science (5-7) to singlemolecule (8-11) studies. However, the techniques suffer from inconsistent performance due to lack of nanoscale control of tip apex structure, which often leads to irreproducible spectral, spatial, and polarization resolved imaging. Instead of refining tip-fabrication to resolve this problem (12-14), we pursue the inverse approach of optimizing the nano-optical vector-field at the tip apex via adaptive optics. Specifically, we demonstrate dynamic wavefront shaping of the excitation field to effectively couple light to the tip and adaptively control for enhanced sensitivity and polarization-controlled TEPL and TERS, with performance exceeding what can be achieved by conventional tip-fabrication

show abstract

Dynamical Manipulation of Surface Plasmon Polaritons

Cited by 22 publications

References 116 publications

Adaptive tip-enhanced nano-spectroscopy

Adaptive tip-enhanced nano-spectroscopy

Compound Structures of Periodic Holes and Curved Ripples Fabricated by the Interference between the Converging Surface Plasmon Polaritons and Femtosecond Laser

Adaptive tip-enhanced nano-spectroscopy

Contact Info

Product

Resources

About