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20 May 2022 Non-linear dynamics modeling of quantum cascade lasers with tilted optical feedback
Xing-Guang Wang, Cheng Wang
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Proceedings Volume 12141, Semiconductor Lasers and Laser Dynamics X; 121410A (2022) https://doi.org/10.1117/12.2620971
Event: SPIE Photonics Europe, 2022, Strasbourg, France
Abstract
Semiconductor lasers subject to optical feedback usually produce rich nonlinear dynamics, including periodic oscillations, quasi-periodic oscillations, and chaotic oscillations. However, quantum cascade lasers (QCLs) are highly stable against normal optical feedback, owing to the intersubband transition with ultrashort carrier lifetime and the near zero linewidth broadening factor. This work numerically shows that tilted optical feedback from a misaligned reflection mirror triggers the generation of nonlinear dynamics from QCLs, which is in good agreement with our previous experimental observations. The physical mechanism is attributed to the non-degeneration of the odd-order round-trip feedback path with the even-order ones.
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Xing-Guang Wang and Cheng Wang "Non-linear dynamics modeling of quantum cascade lasers with tilted optical feedback", Proc. SPIE 12141, Semiconductor Lasers and Laser Dynamics X, 121410A (20 May 2022); https://doi.org/10.1117/12.2620971
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KEYWORDS
Quantum cascade lasers
Nonlinear dynamics
Semiconductor lasers
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