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This study introduces spatial information lasing, enabling direct control of information entropy via near-field coupling. This breakthrough offers stable, high-dimensional lasing for advanced optical applications.

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Area of Science:

  • Physics
  • Optics
  • Metamaterials

Background:

  • Stimulated radiation is crucial for optical amplification and information transfer.
  • Current lasers modulate information outside cavities, and bound states in the continuum (BICs) are limited to specific momentum spaces.

Purpose of the Study:

  • To propose and demonstrate spatial information lasing for direct control of information entropy.
  • To utilize full-k-space BICs in metamaterials for flexible light field manipulation and confinement.

Main Methods:

  • Developing gain-loss metamaterials supporting full-k-space BICs.
  • Employing near-field Bragg coupling of guided modes to control lasing information entropy.
  • Achieving single-mode operation for stable lasing information.

Main Results:

  • Demonstrated spatial information lasing with controllable information entropy.
  • Verified high-dimensional BICs in a continuous energy band for precise Fourier component control.
  • Showcased direct conveyance of rich spatial information in a compact format.

Conclusions:

  • Spatial information lasing provides a versatile platform for direct spatial information transfer.
  • The findings open new avenues for informational coherent amplification and high-Q frameworks in classical and quantum applications.