Numerical simulations of photon scanning tunneling microscopy: role of a probe tip geometry in image formation

Goumri‐Said, Souraya; Salomon, L.; Dufour, Jean-Paul; Fornel, Frédérique de; Zayats, A.V.

doi:10.1016/j.optcom.2004.09.024

Cited by 7 publications

(3 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Numerical simulation [10,21] of scenarios closely following the experimental conditions is a challenging prerequisite. In particular, it appears necessary to model large probe tips [22,23] which may be interacting strongly with the sample. It is also not sufficient to compute only the near fields or the total scattering cross section.…”

Section: Introductionmentioning

confidence: 99%

Apertureless near-field optical microscopy: Differences between heterodyne interferometric and non-interferometric images

2011

View full text Add to dashboard Cite

We analyze simulations of the image generation process in apertureless Scanning Near-Field Optical Microscopy to study the differences between heterodyne interferometric and non-interferometric detection schemes implemented in experiments. Beyond the well-known possibilities of interferometry to enhance signals and extract optical phase information, we find that heterodyne interferometric detection may in fact lead to more robust and easier to interpret experimental results. Further, our results illustrate how simulations that do not include the use of interferometric detection in a given experiment can lead to significant disagreements with the measurements.

show abstract

Section: Introductionmentioning

confidence: 99%

Apertureless near-field optical microscopy: Differences between heterodyne interferometric and non-interferometric images

2011

View full text Add to dashboard Cite

show abstract

“…We have compared experimental results obtained by Schider et al [27], with our simulations performed by the Differential Method [28][29][30][31][32][33][34] improved by S-algorithm [35,36], Li remarks [37] and the Redheffers star product [38] when the number of matrix multiplications can be further reduced remarquably. The versatility of the differential method is demonstrated by considering complex configurations.…”

Section: Introductionmentioning

confidence: 99%

Optical Near Field Study of Ag Nanowires by the Differential Method

Chekroun¹,

Bassou²,

Salomon³

et al. 2012

JMP

View full text Add to dashboard Cite

The optical response of subwavelength silver nanowires arranged periodically on silica has been analyzed numerically by the differential method improved by the S matrix algorithm. Our results improve the capacity of this rigorous method to give a description of various phenomena occurring in near and far field around the periodic grating. This renders pos- sible to determine the positions of plasmon’s resonance according to the choice of materials used and the geometrical properties. We study the behavior of the diffracted light by the nano-structure in both single nanowire case and grating nanowires case. The influence of the exact grating period and the induced modification of the spacer nanowire depend- ence are then discussed. Moreover, we present mappings of the electromagnetic field located at 50 nm above the nanowires

show abstract

“…A comparison between free-space field and image measured using a reduced 2D tip without invoking the concept of TF was performed in Ref. 20, and calculations of 2D TFs were presented in Ref. 21.…”

Section: Introductionmentioning

confidence: 99%

Vectorial modeling of near-field imaging with uncoated fiber probes: transfer function and resolving power

2006

View full text Add to dashboard Cite

Using exact 3D vectorial simulations of radiation coupling into uncoated dielectric fiber probes, we calculate amplitude transfer functions for conical single-mode fiber tips at the light wavelength of 633 nm. The coupling efficiency of glass fiber tips is determined in a wide range of spatial frequencies of the incident radiation for opening angles varying from 30 degrees to 120 degrees . The resolution in near-field imaging with these tips is considered for field distributions limited in both direct and spatial-frequency space. The characteristics of the transfer functions describing the relation between probed optical fields and near-field images are analyzed in detail. The importance of utilizing a perfectly sharp tip is also examined.

show abstract

Numerical simulations of photon scanning tunneling microscopy: role of a probe tip geometry in image formation

Cited by 7 publications

References 25 publications

Apertureless near-field optical microscopy: Differences between heterodyne interferometric and non-interferometric images

Apertureless near-field optical microscopy: Differences between heterodyne interferometric and non-interferometric images

Optical Near Field Study of Ag Nanowires by the Differential Method

Vectorial modeling of near-field imaging with uncoated fiber probes: transfer function and resolving power

Contact Info

Product

Resources

About