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Rapidly accelerating Mathieu and Weber surface plasmon beams.

Ana Libster-Hershko1, Itai Epstein1, Ady Arie1

  • 1Department of Physical Electronics, Faculty of Engineering, Tel-Aviv University, Tel-Aviv 69978, Israel.

Physical Review Letters
|October 4, 2014
PubMed
Summary
This summary is machine-generated.

We generated self-accelerating surface plasmon beams (Mathieu and Weber beams) that maintain their shape during propagation. The nonparaxial Weber beam shows superior shape preservation over longer distances compared to Airy beams.

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Area of Science:

  • Optics and Photonics
  • Surface Plasmon Photonics
  • Nonparaxial Beam Propagation

Background:

  • Surface plasmon beams are crucial for advanced optical applications.
  • Understanding nonparaxial beam behavior is essential for overcoming propagation limitations.
  • Existing paraxial models, like Airy beams, have limitations in maintaining beam shape over distance.

Purpose of the Study:

  • To generate and characterize novel self-accelerating surface plasmon beams.
  • To investigate the nonparaxial propagation dynamics of these beams.
  • To demonstrate dynamic trajectory control and self-healing capabilities.

Main Methods:

  • Solving the two-dimensional nonparaxial Helmholtz equation.
  • Generating Mathieu beams (elliptic trajectory) and Weber beams (parabolic trajectory).
  • Utilizing free-space beam translation for trajectory control and demonstrating self-healing post-obstruction.

Main Results:

  • Successfully generated self-accelerating Mathieu and Weber surface plasmon beams.
  • Weber beams exhibit significantly enhanced shape preservation along parabolic trajectories compared to paraxial Airy beams.
  • Demonstrated dynamic control over beam trajectories and robust self-healing properties.

Conclusions:

  • Nonparaxial solutions offer superior performance for self-accelerating beams in terms of shape preservation and propagation distance.
  • These novel beams hold promise for applications requiring robust light-matter interactions and controlled energy delivery.
  • The demonstrated dynamic control and self-healing expand the potential applications of surface plasmon beams.