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Theoretical modelling of single-mode lasing in microcavity lasers via optical interference injection
Optics Express
|June 19, 2020
Summary
Controlling light emission in semiconductor lasers is crucial. This study demonstrates single longitudinal mode operation in a Fabry-Pérot microcavity using a novel rate equation model and optical injection, achieving over 40 dB side mode suppression.
Area of Science:
- Semiconductor laser physics
- Quantum optics
- Microcavity design
Background:
- Controlling mode oscillation and competition is vital for semiconductor laser light emission.
- Vacuum electromagnetic field ripples influence gain and spontaneous emission in microcavities.
Purpose of the Study:
- To develop an extended rate equation model for semiconductor lasers.
- To investigate the control of light emission through vacuum field manipulation and optical injection.
- To bridge classical and quantum-optics models of laser radiative processes.
Main Methods:
- Development of a rate equation model incorporating spatially modulated gain and spontaneous emission.
- Analysis of the interplay between vacuum field oscillations and external optical injection.
- Utilizing dual-beam laser interference for optical injection in a Fabry-Pérot microcavity.
Main Results:
- Achieved single longitudinal mode operation in a Fabry-Pérot microcavity.
- Demonstrated a side mode suppression ratio exceeding 40 dB.
- Validated the extended rate equation model's effectiveness.
Conclusions:
- The developed model successfully explains and controls mode competition in semiconductor lasers.
- Manipulating vacuum field-gain interplay with optical injection enables precise control over laser emission.
- The study integrates classical and quantum-optics perspectives on microcavity radiative processes.
