What is it about?
High Q-factor resonance holds great promise for bio-chemical sensing and enhanced light-matter interaction. We have shown that terahertz magnetic resonances can be achieved by exploiting the coherent Fano interactions with high Q-factor beyond 10,000. We have demonstrated experiments to confirm terahertz magnetic resonance accompanied by a high-Q of no less than 261. This was previously thought impossible as terahertz magnetic resonances usually result in huge energy radiation loss, which limits the Q-factor to less than 15.
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Why is it important?
This finding shows two significant things: on one side, a new physical mechanism of exploiting magnetic dipole at the Wood-Rayleigh anomaly frequency to suppress radiation loss of electromagnetic energy; on the other side, the experiment demonstrates the superiority performance of terahertz magnetic resonance for the first time, and achieves breakthrough results.
Read the Original
This page is a summary of: Terahertz high-Q magnetic dipole resonance induced by coherent Fano interactions, Applied Physics Letters, November 2022, American Institute of Physics, DOI: 10.1063/5.0112993.
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