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Controlling wave fronts with tunable disordered non-Hermitian multilayers.

Denis V Novitsky1, Dmitry Lyakhov2, Dominik Michels2

  • 1B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Nezavisimosti Avenue 68, 220072, Minsk, Belarus. dvnovitsky@gmail.com.

Scientific Reports
|February 27, 2021
PubMed
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This summary is machine-generated.

Researchers developed a new disordered multilayer system for flexible control of light. This non-Hermitian photonic device offers tunable light passage time and wave-front shaping for novel optical applications.

Area of Science:

  • Photonics
  • Metamaterials
  • Non-Hermitian systems

Background:

  • Non-Hermitian photonic systems offer unique properties for novel optical effects and light-matter interactions.
  • There is a growing need for fast and compact methods to control light propagation.

Purpose of the Study:

  • To propose a new architecture unifying disordered metamaterials and non-Hermitian photonics.
  • To demonstrate control over light passage time and wave-front shaping using disordered loss-gain multilayers.

Main Methods:

  • Unifying disordered metamaterials and non-Hermitian photonics.
  • Utilizing disordered loss-gain multilayers.
  • Controlling disorder strength via external pump power.

Main Results:

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  • Demonstrated flexible control of light passage time and wave-front shaping.
  • Showed the ability to switch kink formation on/off by altering disorder levels.
  • Achieved tunable output intensity using nonlinear loss and gain saturation.

Conclusions:

  • The proposed disordered multilayer architecture provides a powerful tool for light control.
  • The system's tunable disorder strength makes it a basis for active photonic devices.
  • This approach enables novel optical applications through flexible light manipulation.