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Area of Science:

  • Photonics
  • Materials Science
  • Nanotechnology

Background:

  • Miniaturized lasers are crucial for modern information technology.
  • Developing reconfigurable coherent nanolaser arrays is a key objective for enhanced information capacity and functionality.
  • Existing methods lack a physical mechanism for reconfiguring nanolaser cavities.

Purpose of the Study:

  • To propose and demonstrate moiré nanolaser arrays based on optical flatbands.
  • To achieve coherent nanolasing in reconfigurable single and array nanocavities.
  • To explore applications in communication, LiDAR, optical computing, and imaging.

Main Methods:

  • Utilized twisted photonic graphene lattices to create moiré structures.
  • Exploited optical flatbands for coherent light localization.
  • Engineered reconfigurable nanocavities for nanolaser arrays.

Main Results:

  • Demonstrated synchronized nanolaser arrays with high spatial and spectral coherence.
  • Achieved coherent lasing in various reconfigurable patterns, including Chinese characters.
  • Manipulated emission directions by controlling spatially varying relative phases.

Conclusions:

  • Moiré nanolaser arrays offer a novel platform for reconfigurable coherent light sources.
  • The demonstrated technology provides a foundation for advanced active photonic devices.
  • This research opens new avenues for integrated photonic systems and optical functionalities.