PhD Position in Novel Frequency Combs and Coupled Cavity Physics

Explore New Frontiers in Frequency Comb Physics

Join our dynamic research group as we delve into groundbreaking areas of frequency comb physics. Our innovative approach focuses on developing laser sources that generate numerous evenly spaced spectral lines, serving as ultra-precise rulers for measuring light. Moving beyond traditional combs that necessitate large, intricate setups, we aim to realize compact versions directly on chip, utilizing liquid-like light and lattice schemes in synthetic frequency dimensions for enhanced stability and control. These compact combs have extensive applications in optical communications, precision spectroscopy, and LIDAR.

Project Overview

This initiative centers on the fundamental physics of coherence in coupled frequency comb lasers. One significant challenge is merging multiple comb sources into a single coherent system while addressing issues related to fabrication-induced detuning of the repetition rate and carrier-envelope offset.

Key Responsibilities

• Investigate the physics of mutual coherence between two fast-gain ring lasers, establishing an innovative platform for coupled comb ladders.
• Employ topological coupling concepts to connect detuned frequency ladders, facilitating phase locking across devices.
• Examine the interplay of nonlinear dynamics, symmetry, and disorder within coupled comb arrays.

Your initial milestone will be to demonstrate phase-coherent coupling between two controllable mid-infrared comb lasers, paving the way for arrays of mutually coherent combs.

Desired Profile

• Strong foundation in physics, particularly in optics, condensed matter, or quantum electronics.
• Genuine interest in nonlinear and topological photonics, laser dynamics, or frequency metrology.
• Previous experience with lasers or nanofabrication is advantageous, but not essential.

Work Environment

You will thrive in a research setting that bridges fundamental physics with advanced photonics, utilizing state-of-the-art cleanroom and laser laboratories at ETH Zürich.

Inclusivity and Diversity

ETH Zurich champions an inclusive culture. We advocate for equality of opportunity, appreciate diversity, and foster a working and learning environment that respects the rights and dignity of all staff and students. Discover more about our commitment to fairness and open environments that allow everyone to thrive on our Equal Opportunities and Diversity website.

Join Us

If you are curious and eager to contribute to our research endeavors, we look forward to hearing from you.

For further insights about our Physics department, visit our website. 

About ETH Zürich

ETH Zurich stands as a premier institution globally, excelling in science and technology. Renowned for exceptional education and avant-garde fundamental research, we are committed to translating groundbreaking knowledge into practical applications. With a vibrant community of over 30,000 individuals from over 120 nations, our university fosters independent thinking and cultivates an environment where excellence thrives. Situated in central Europe, yet connected globally, we collaborate to address today’s and tomorrow’s challenges.