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Intensity and polarization self-pulsations in vertical-cavity surface-emitting lasers.
Optics Letters
|November 17, 2007
Summary
We modeled polarization in vertical-cavity surface-emitting lasers with an absorbing region. Four distinct behaviors were identified, matching recent experimental findings.
Area of Science:
- Optics and Photonics
- Semiconductor Lasers
Background:
- Vertical-cavity surface-emitting lasers (VCSELs) are crucial optoelectronic devices.
- Understanding their polarization dynamics is essential for advanced applications.
Purpose of the Study:
- To develop a dynamic model for VCSEL polarization behavior.
- To investigate the impact of an absorbing region on laser polarization.
Main Methods:
- Implementation of a dynamic model.
- Analysis of polarization-resolved optical and power spectra.
- Characterization of distinct operational regimes.
Main Results:
- Identified four regions of qualitatively different polarization behavior.
- Observed stable linearly polarized operation.
- Documented various pulsation dynamics, including intensity and polarization components.
- Found polarization self-pulsation with constant total intensity.
Conclusions:
- The dynamic model accurately predicts VCSEL polarization behavior.
- The findings align with and explain recent experimental observations.
- The study provides insights into controlling VCSEL polarization states.
