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Physicists use resonance to harness photonic energy in microresonators
23 Feb 2021
Researchers at University of Bath maximize ability of a resonator to store energy by optimizing sharpness of resonance (finesse).
For light, microresonators act as miniature loops. If the peaks of these lightwaves reach the same point after a full loop is made around the resonator, then the energy storage capacity of the resonator hits a maximum when measured against frequency.
The ability of a resonator to store energy is characterised by the sharpness of the resonance, also called finesse. Physicists are caught in a race to maximise the finesses of resonators, so as to store as much energy as possible in a single resonator.