What is it about?
A novel, high-quality-factor and cavity-less resonance phenomenon called Floquet Defect Mode Resonance enables efficient broadband frequency generation by four-wave mixing in a topological silicon photonics platform, resistant to fabrication defects.
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Why is it important?
We report the first demonstration of resonance-enhanced frequency generation by four-wave mixing (FWM) of Floquet bulk modes in a Floquet topological resonator with third-order optical nonlinearity through a novel resonance effect called Floquet Defect Mode Resonance (FDMR). The FDMR is cavity-less, tunable, and can provide very high Q-factors, reaching ~100,000 for our device, which to our knowledge is the highest reported to date for a 2D topological resonator. We achieved more than 12 dB enhancement in the wavelength conversion efficiency with a conversion bandwidth of more than 10 nm. Our work could lead to robust, tunable, and broadband wavelength conversion, parametric amplification, and correlated photon pair generation on a topological photonic platform.
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This page is a summary of: Broadband resonance-enhanced frequency generation by four-wave mixing in a silicon Floquet topological photonic insulator, APL Photonics, May 2022, American Institute of Physics,
DOI: 10.1063/5.0087217.
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