Related Experiment Video
Updated: Feb 6, 2026

Mechanical Mapping of Spheroids Using Brillouin Spectroscopy
Published on: December 12, 2025
Brillouin assisted slow-light enhancement via Fabry-Perot cavity effects
César Jáuregui1, Periklis Petropoulos, David J Richardson
1Optoelectronics Research Centre, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom. cjm@orc.soton.ac.uk
Abstract:
We show that the presence of a cavity modifies the behaviour of Brillouin-assisted slow light and can be used to significantly enhance the achievable pulse delays. Moreover, the cavity introduces an additional wavelength dependence into the delay versus gain relationship which can be used to provide an extra degree of control within a slow light system. The degree of delay enhancement depends critically both on the cavity finesse and the Brillouin pump power. Our experiments show that delay enhancements greater than 100% can be obtained accompanied by only relatively modest increases in pulse distortion.
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