The Semiconductor Diode Laser Group at the College of Optics and Photonics (CREOL), University of Central Florida (UCF), invites applications for one or two Postdoctoral Research Associate or Research Scientist positions in nonlinear dynamical systems, numerical modeling, and synchronization of coupled oscillator networks.
The project investigates emergent synchronization and collective dynamics in large networks of delay-coupled nonlinear oscillators, using semiconductor laser arrays as an experimentally controllable platform for studying fundamental problems in nonlinear dynamics and complex systems. Semiconductor laser arrays with optical feedback form networks of delay-coupled nonlinear oscillators governed by Lang–Kobayashi–type delay differential equations and exhibit a wide range of dynamical phenomena including synchronization transitions, cluster states, multistability, and spatiotemporal pattern formation.
The research combines nonlinear dynamical systems theory, analytical modeling, large-scale numerical simulations, and experimental studies to understand how coherent collective states emerge in large arrays of photonic nonlinear oscillators. Because semiconductor laser arrays provide experimentally tunable coupling strength, delay, and system parameters, they offer a powerful platform for exploring synchronization and collective dynamics in complex oscillator networks.
A central component of the project involves analytical and computational modeling and large-scale numerical simulations of coupled oscillator networks, including stability analysis and exploration of high-dimensional parameter spaces. The work may involve simulations of large arrays (tens to hundreds of coupled oscillators) and analysis of their collective dynamics.
Possible research directions include:
- synchronization and phase locking in large oscillator networks
• nonlinear dynamics of delay-coupled systems
• cluster synchronization, partial synchronization, and chimera states
• bifurcation structure and stability analysis of delay differential equations
• large-scale numerical simulations of coupled nonlinear oscillator networks
• spatiotemporal dynamics in multimode and spatially extended semiconductor laser systems
The position is particularly suitable for candidates with backgrounds in applied mathematics, nonlinear dynamical systems, theoretical physics, photonics, or laser physics. Strong experience with numerical simulations of nonlinear dynamical systems, computational modeling, and scientific programming (e.g., Python, MATLAB, Julia, or C/C++) is highly desirable. Experience with numerical analysis of differential or delay differential equations, or with large-scale simulations of oscillator networks, is a strong advantage. Prior experience with semiconductor lasers is not required.
The successful candidate will join the Semiconductor Diode Laser Group at CREOL, which conducts research on nonlinear dynamics, synchronization, and coherent phase-locking in high-power semiconductor laser arrays. The position offers opportunities to work in a collaborative and interdisciplinary research environment and to interact with researchers across CREOL and the Department of Electrical and Computer Engineering at UCF.
Eligibility: One position may be restricted to U.S. citizens or U.S. permanent residents due to the nature of the research funding. A second position may be open to candidates of any nationality. Applicants meeting either eligibility category are encouraged to apply.
Salary: Competitive salary in the range of $70,000–$90,000 per year, depending on experience, plus university benefits. For exceptionally strong candidates, appointment at the Research Scientist level may be considered, with a salary range of $90,000–$110,000 per year.
The position is expected to be funded for 2–3 years, subject to satisfactory progress.
Application: Applicants should submit a curriculum vitae, a brief statement of research interests, and contact information for three references to Professor Yehuda Braiman (yehuda.braiman@ucf.edu). Review of applications will begin immediately and continue until the positions are filled.