Nonlinear Dynamics of Mid-Infrared Interband Cascade Lasers Subject to Variable-Aperture Optical Feedback
Maorong Zhao,
Guangqiong Xia,
Ke Yang,
Shuman Liu,
Junqi Liu,
Qiupin Wang,
Jianglong Liu,
Zhengmao Wu
Affiliations
Maorong Zhao
School of Physical Science and Technology, Southwest University, Chongqing 400715, China
Guangqiong Xia
School of Physical Science and Technology, Southwest University, Chongqing 400715, China
Ke Yang
Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083, China
Shuman Liu
Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083, China
Junqi Liu
Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083, China
Qiupin Wang
School of Physical Science and Technology, Southwest University, Chongqing 400715, China
Jianglong Liu
School of Physical Science and Technology, Southwest University, Chongqing 400715, China
Zhengmao Wu
School of Physical Science and Technology, Southwest University, Chongqing 400715, China
In this work, we experimentally investigate the nonlinear dynamics of an interband cascade laser (ICL) under variable-aperture optical feedback implemented by a gold mirror combining with a ring-actuated iris diaphragm (RAID). By continuously varying the diameter of RAID (DR), the evolution of the dynamical state of ICL with the aperture of the optical feedback can be inspected. The characteristics of each dynamical state are characterized by time series, power spectra, phase portraits, and Lyapunov exponents. The results show that, with the decrease of DR, the dynamical state of the ICL under variable-aperture optical feedback presents an evolution from complex, simple to stable. Diverse dynamical states including period one state (P1), period two state (P2), multi-period state (MP), quasi-period state (QP), low-frequency fluctuation (LFF), chaotic state (C), and hyperchaos have been observed. Through mapping the evolution of dynamical states with DR for the ICL biased at different currents, different evolved routes of the dynamical states are revealed.
