Phase-Resolved Observation of the Gouy Phase Shift of Surface Plasmon Polaritons

Birr, Tobias; Fischer, Tim; Evlyukhin, Andrey B.; Zywietz, Urs; Chichkov, Boris N.; Reinhardt, Carsten

doi:10.1021/acsphotonics.6b00999

Cited by 12 publications

(11 citation statements)

References 30 publications

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“…Note added in proof. When completing our work, we found that the Gouy phase shift of PGBs has been measured and reported using LRM with phase detection [16].…”

Section: Acknowledgmentsmentioning

confidence: 91%

Description and characterization of plasmonic Gaussian beams

Garcia-Ortiz¹,

Pisano²,

Coello³

2017

J. Opt.

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In this work, we present for the first time a detailed description and experimental characterization of plasmonic Gaussian beams (PGBs), as well as the analytical expression to describe their field and intensity distributions. The propagation parameters of the PGBs, such as the divergence angle, Rayleigh range, beam width function, and the beam waist are determined experimentally in accordance to the proposed model. The radius of curvature of the wavefront and the Gouy phase shift of PGBs can also be predicted using this method.

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“…Note added in proof. When completing our work, we found that the Gouy phase shift of PGBs has been measured and reported using LRM with phase detection [16].…”

Section: Acknowledgmentsmentioning

confidence: 91%

Description and characterization of plasmonic Gaussian beams

Garcia-Ortiz¹,

Pisano²,

Coello³

2017

J. Opt.

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“…The azimuthal mode number

is dropped with

0

throughout (i.e., pure radial LG beams with radial number

). For a given optical frequency, the phase of the field relative to that of a plane wave propagating along

[i.e., the Gouy phase ( 20 – 22 )] is given by

, with the Rayleigh range

.…”

Section: Lg Superpositions In the Paraxial Limitmentioning

confidence: 99%

“…However, 4

microscopy requires interferometric stability and delicate mode matching. Another method relies on copropagating beams each with distinct Gouy phases ( 20 – 22 ), which was proposed and realized mostly in the context of dark (i.e., blue-detuned) optical traps, either with two Gaussian beams of different waists or offset foci ( 23 , 24 ) or with LG modes of different orders ( 14 , 25 ). However, for bright (i.e., red-detuned) trap configurations, a comparable strategy has remained elusive.…”

mentioning

confidence: 99%

Reduced volume and reflection for bright optical tweezers with radial Laguerre–Gauss beams

Béguin

Laurat

Luan

et al. 2020

Proc. Natl. Acad. Sci. U.S.A.

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Spatially structured light has opened a wide range of opportunities for enhanced imaging as well as optical manipulation and particle confinement. Here, we show that phase-coherent illumination with superpositions of radial Laguerre–Gauss (LG) beams provides improved localization for bright optical tweezer traps, with narrowed radial and axial intensity distributions. Further, the Gouy phase shifts for sums of tightly focused radial LG fields can be exploited for phase-contrast strategies at the wavelength scale. One example developed here is the suppression of interference fringes from reflection near nanodielectric surfaces, with the promise of improved cold-atom delivery and manipulation.

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“…In other words, these boundaries between two antiparallel noncentrosymmetric domains present strains and perturbations of the refractive index. Additionally, these imperfections are randomly positioned and if they are limited to the nanoscale, they will produce a local-field enhancement as described in [48][49][50]. This enhancement can be up to 10 times or more [51,52] and leads to "hotspots" that have already been observed even in centrosymmetric materials that present local defects [53].…”

Section: Ppln: Removing Incoherent Imaging Artifactsmentioning

confidence: 99%

Elimination of imaging artifacts in second harmonic generation microscopy using interferometry

Pinsard¹,

Schmeltz²,

Kolk³

et al. 2019

Biomed. Opt. Express

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Conventional second harmonic generation (SHG) microscopy might not clearly reveal the structure of complex samples if the interference between all scatterers in the focal volume results in artefactual patterns. We report here the use of interferometric second harmonic generation (I-SHG) microscopy to efficiently remove these artifacts from SHG images. Interfaces between two regions of opposite polarity are considered because they are known to produce imaging artifacts in muscle for instance. As a model system, such interfaces are first studied in periodically-poled lithium niobate (PPLN), where an artefactual incoherent SH signal is obtained because of irregularities at the interfaces, that overshadow the sought-after coherent contribution. Using I-SHG allows to remove the incoherent part completely without any spatial filtering. Second, I-SHG is also proven to resolve the doubleband pattern expected in muscle where standard SHG exhibits in some regions artefactual single-band patterns. In addition to removing the artifacts at the interfaces between antiparallel domains in both structures (PPLN and muscle), I-SHG also increases their visibility by up to a factor of 5. This demonstrates that I-SHG is a powerful technique to image biological samples at enhanced contrast while suppressing artifacts.

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Phase-Resolved Observation of the Gouy Phase Shift of Surface Plasmon Polaritons

Cited by 12 publications

References 30 publications

Description and characterization of plasmonic Gaussian beams

Description and characterization of plasmonic Gaussian beams

Reduced volume and reflection for bright optical tweezers with radial Laguerre–Gauss beams

Elimination of imaging artifacts in second harmonic generation microscopy using interferometry

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