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Area of Science:

  • Optics and Photonics
  • Materials Science
  • Quantum Engineering

Background:

  • Phased-array metasurfaces enable arbitrary light wavefront shaping, functioning as lenses and beam deflectors.
  • Luminescent metasurfaces typically use uniform arrays, limiting wavefront control of emitted light.
  • Recent advances show phased-array control of spontaneous emission, but current devices have polarization-dependent emission.

Purpose of the Study:

  • To explain the polarization disparity in luminescent phased-array metasurface emission.
  • To improve the directionality of incoherent emission from quantum-well emitting phased-array metasurfaces.
  • To design complementary metasurfaces for directing emission from diverse quantum processes.

Main Methods:

  • Utilized a reciprocal simulation strategy to analyze emission characteristics.
  • Investigated polarization-dependent behavior in phased-array metasurfaces.
  • Designed novel metasurface structures for enhanced emission control.

Main Results:

  • Successfully explained the underlying reasons for unidirectional emission in p-polarized light.
  • Demonstrated improved directionality of incoherent emission from quantum-well metasurfaces.
  • Proposed complementary metasurface designs for broader applicability.

Conclusions:

  • The study provides a fundamental understanding of polarization effects in luminescent metasurfaces.
  • The developed simulation strategy and metasurface designs offer pathways for advanced light emission control.
  • This work advances the development of tunable luminescent optical elements.