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Stochastic coupled mode theory for partially coherent laser arrays.
Dominic F Siriani1, Kent D Choquette, P Scott Carney
1Department of Electrical and Computer Engineering, University of Illinois, Urbana, Illinois 61801, USA. siriani@illinois.edu
Summary
We studied partially coherent laser arrays using a stochastic coupled mode theory. Coherence properties depend on the number and intensity of coupled modes, aiding semiconductor laser array research.
Area of Science:
- Optics and Photonics
- Semiconductor Physics
Background:
- Partially coherent laser arrays are crucial for high-power applications.
- Understanding their coherence properties is essential for device performance.
Purpose of the Study:
- To investigate the coherence properties of partially coherent, transversely coupled laser arrays.
- To develop a theoretical framework for predicting coherence functions.
Main Methods:
- Utilized a stochastic coupled mode formalism.
- Analyzed coherence functions in both spectral and time domains.
Main Results:
- Coherence properties are strongly dependent on the number of coupled modes.
- Coherence is also influenced by the intensity of coupled modes.
- Predictions were made for spectral and time-domain coherence.
Conclusions:
- The stochastic coupled mode theory provides insights into laser array coherence.
- This theory is applicable to semiconductor laser arrays, including vertical-cavity surface-emitting lasers.
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