Sub‑100 Femtosecond All‑Optical Modulation Beyond Electron–Phonon Limits (IMAGE)

Shanghai Jiao Tong University Journal Center

Sub‑100 Femtosecond All‑Optical Modulation Beyond Electron–Phonon Limits

Caption

  • Engineered Ag–Si interfacial plasmonic modes enable deconvolution-verified sub-100 fs all-optical modulation, overcoming the temporal bottleneck imposed by electron–phonon relaxation in conventional plasmonic structures.
  • A unified electromagnetic–thermal physical model reveals an interface-governed nonthermal carrier extraction pathway faster than electron–electron and electron–phonon scattering, quantitatively explaining the observed sub-100 fs dynamics.

Credit

Renxian Gao, Jiayu Li, Xiaoxiang Dong, Yonglin He, Wenbin Chen, Peiwen Ren, Xiaoyu Zhao, Ming-De Li*, Zhilin Yang*.

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License

CC BY-NC-ND

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