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Trapping of Micro Particles in Nanoplasmonic Optical Lattice
Published on: September 5, 2017
Dynamic trapping of light in modulated waveguide lattices.
1Dipartimento di Fisica, Politecnico di Milano, Milano, Italy. longhi@fisi.polimi.it
Optics Letters
|March 16, 2011
Summary
A new method uses modulated waveguide lattices to trap light beams, extending the dynamic Kapitza trapping effect to optics. This technique allows for light confinement at both normal and Bragg incidence angles.
Area of Science:
- Optics and Photonics
- Waveguide Physics
- Nonlinear Optics
Background:
- The dynamic (Kapitza) trapping effect describes particle confinement in oscillating potentials.
- Graded-index waveguide lattices can confine light at normal or Bragg incidence.
Purpose of the Study:
- To propose a discrete analogue of the dynamic trapping effect for light waves.
- To investigate light trapping in modulated graded-index waveguide lattices.
Main Methods:
- Theoretical proposal of a discrete analogue of Kapitza trapping for optical beams.
- Analysis of light propagation in periodically modulated graded-index waveguide lattices.
Main Results:
- Light confinement is achieved in nonmodulated waveguide lattices at normal or Bragg incidence.
- Periodic modulation of the waveguide potential enables light trapping at both normal and Bragg incidence angles.
Conclusions:
- The proposed method extends the dynamic trapping effect to optical systems.
- Modulated waveguide lattices offer enhanced control over light confinement.
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