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Energy exchange between modes in a multimode two-color quantum dot laser with optical feedback
Optics Letters
|July 16, 2016
Summary
We studied two-color quantum dot lasers with optical feedback. Energy exchanges between modes were observed, impacting laser control.
Area of Science:
- Quantum optics
- Semiconductor lasers
Background:
- Quantum dot lasers offer tunable emission wavelengths.
- Optical feedback can significantly alter laser dynamics.
Purpose of the Study:
- Investigate multimode dynamics in two-color quantum dot lasers.
- Analyze the effects of time-delayed optical feedback.
- Understand energy exchanges and modal competition.
Main Methods:
- Experimental investigation of laser dynamics.
- Theoretical modeling using an extended quantum dot laser model.
- Analysis of longitudinal mode behavior under feedback.
Main Results:
- Observed energy exchanges between longitudinal modes of the excited state.
- Demonstrated independent modal competition in ground and excited states.
- Accurate reproduction of these features with the extended model.
Conclusions:
- Time-delayed optical feedback influences multimode dynamics in two-color quantum dot lasers.
- Understanding these dynamics is crucial for feedback-based control applications.
