PhD Position in Frequency Lattices and RF-Controlled Comb Dynamics

Position Overview

Our group is engaged in pioneering research aimed at generating and controlling frequency combs—sophisticated laser sources that produce a multitude of precisely tuned optical lines, functioning as rulers for light. By moving beyond traditional passive mode-locking, we explore the capabilities of liquid-like lasers, employing resonant radio-frequency (RF) modulation to transform the spectrum into a synthetic frequency lattice, facilitating rapid expansion of comb lines and enhancing spectral control.

Project Background

This initiative combines advanced numerical modeling with laboratory demonstrations to delve into the physics of synthetic frequency lattices within fast-gain lasers.

Key Responsibilities

• Develop simulation frameworks for frequency lattices, investigating the synergy between RF modulation, gain recovery, and nonlinear dynamics.
• Examine ballistic versus diffusive transport of light in synthetic lattices, connecting these phenomena to quantum walk physics.
• Investigate how lattice engineering—such as periodicity, disorder, and synthetic gauge fields—affects comb bandwidth, stability, and tunability.
• Test theoretical predictions in mid-infrared quantum cascade lasers, ensuring a continuous feedback loop between modeling and experimental validation.

Candidate Profile

• Educational background in physics, photonics, or electrical engineering, coupled with a keen interest in both theoretical and experimental aspects.
• Proficient in numerical simulations, encompassing time-domain propagation, coupled-mode theory, or nonlinear ODE/PDE solvers.
• Practical experience in laboratory settings involving lasers, optics, or photonic devices.
• Competence in experimental data acquisition and analysis using Python.
• A strong desire to integrate computational modeling with experimental validation, fostering close collaboration with our group.

Work Environment

Experience an exceptional setting that uniquely combines theory, computation, and experimental research at ETH Zürich, alongside seasoned professionals in photonics, nonlinear dynamics, and topological physics from both ETH and the international community.

Diversity and Inclusion

ETH Zurich champions an inclusive culture, promoting equality of opportunity, valuing diversity, and fostering an environment where the rights and dignity of all staff and students are respected.

About ETH Zürich

ETH Zurich stands as one of the world’s leading institutions focused on science and technology, acclaimed for its unparalleled education, groundbreaking research, and effective transfer of new knowledge to society. Our community of over 30,000 individuals from more than 120 nations thrives in an environment that encourages independent thinking and inspires excellence, working collaboratively to address global challenges now and in the future.