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Coherent synthesis of complex amplitude patterns using a photonic crystal surface-emitting laser
Optics Express
|November 11, 2025
Summary
Researchers developed a new continuously pattern-variable emitter for wearable devices. This nanotechnology breakthrough allows for complex beam-pattern synthesis and continuous modulation of light emission, overcoming previous limitations.
Area of Science:
- Semiconductor nanotechnology
- Optoelectronics
- Photonics
Background:
- Nanotechnology advancements enable functional semiconductor devices for wearables.
- Previous on-chip emitters produced stable or quasi-dynamic 2D far-field patterns.
- Continuous modulation of emitted beam patterns remained a challenge.
Purpose of the Study:
- To propose and demonstrate a continuously pattern-variable emitter.
- To achieve complex-amplitude beam-pattern synthesis.
- To enable continuous modulation of emitted light patterns for advanced applications.
Main Methods:
- Embedding multiple pattern-projecting lasers within a single optical resonator.
- Interfering laser beams in the far field to synthesize desired patterns.
- Conducting a proof-of-concept experiment to validate the design.
Main Results:
- Successful demonstration of a continuously pattern-variable emitter.
- Achieved continuous beam pattern changes between top-hat and Gaussian shapes.
- Realized continuous control over the beam diameter.
Conclusions:
- The proposed emitter overcomes limitations of previous static or quasi-dynamic systems.
- Continuous modulation of beam patterns and diameter is feasible.
- This technology holds potential for advanced integrated photonic and wearable devices.
