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Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light
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Optical branched flow in nonlocal nonlinear medium.

Tongxun Zhao1, Yudian Wang1, Ruihan Peng1

  • 1School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.

Nanophotonics (Berlin, Germany)
|April 4, 2025
PubMed
Summary
This summary is machine-generated.

Nonlocality in optical media broadens branched flow structures and shifts branching points further away. This averaging effect screens self-focusing, ultimately restoring the branched flow to its linear condition.

Keywords:
Kerr effectbranched flownonlocal effectthe first branching points

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Area of Science:

  • Nonlinear optics
  • Wave propagation in random media

Background:

  • Light propagation in random media generates optical branched flow.
  • Self-focusing in optical media accelerates branching and sharpens filaments.

Purpose of the Study:

  • Investigate the influence of nonlinear response nonlocality on optical branched flow.
  • Quantify the effect of nonlocality range on branching characteristics.

Main Methods:

  • Developed a semi-analytical formula to model branched flow with nonlocality.
  • Analyzed the shift of the first branching point and changes in flow structure.

Main Results:

  • Increased nonlocality range shifts the first branching point to a greater distance.
  • Nonlocality broadens optical branched flow structures.
  • Nonlocality screens the self-focusing effect on branched flow.

Conclusions:

  • Nonlocality in the nonlinear response averages out self-focusing effects.
  • As nonlocality increases, branched flow approaches its linear condition.
  • The developed formula confirms nonlocality's screening of self-focusing on branching flow.