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Plasmonic Airy beams with dynamically controlled trajectories.

Peng Zhang1, Sheng Wang, Yongmin Liu

  • 1NSF Nanoscale Science and Engineering Center, 3112 Etcheverry Hall, University of California, Berkeley, California 94720, USA.

Optics Letters
|August 18, 2011
PubMed
Summary
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Researchers created and controlled plasmonic Airy beams (PABs) by coupling light to metal surfaces. The beams

Area of Science:

  • Optics and Photonics
  • Materials Science

Background:

  • Surface plasmon polaritons (SPPs) offer unique light confinement and propagation properties.
  • Controlling the trajectory of light at the nanoscale is crucial for advanced optical applications.

Purpose of the Study:

  • To experimentally generate plasmonic Airy beams (PABs).
  • To demonstrate dynamic trajectory control of these PABs in real time.

Main Methods:

  • Direct coupling of free-space Airy beams to SPPs.
  • Utilizing a grating coupler on a metal surface for beam generation.
  • Employing a computer-addressed spatial light modulator for reconfiguration.

Main Results:

  • Successful generation of PABs.

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  • Demonstration of real-time reconfiguration of PABs' ballistic motion.
  • Validation of both spatial light modulator and mechanical means for trajectory control.
  • Conclusions:

    • PABs can be experimentally generated and dynamically controlled.
    • The demonstrated control methods open possibilities for novel photonic devices and applications.