Reconfigurable moiré nanolaser arrays with phase synchronization

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.