Mainz 2026 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 50: Matter Wave Interferometry and Metrology II

Q 50.7: Talk

Thursday, March 5, 2026, 12:30–12:45, P 11

Operation of a ring-laser-gyroscope using beam ellipticity — •Marlon Demmerle, Thomas Gereons, Jannik Zenner, and Simon Stellmer — Universität Bonn, Germany

This work introduces a ring-laser-gyroscope exploiting the Sagnac effect to achieve precise rotation sensing, focusing on long-term frequency stability. It uses an ellipticity based locking scheme that leverages higher-order spatial modes without relying on conventional modulation techniques and is directly applicable to all non-linear resonator geometries. By analyzing subtle, mode-dependent changes in the beam shape, the setup attains robust cavity locking while effectively suppressing technical noise. This enables a compact, low-complexity platform for precision rotation measurements and advanced optical metrology.

Keywords: Sagnac; Rotation; Ring-laser; Gyroscope