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Plasmonics

Femtosecond polarization switching

High-speed control of polarization may lead to ultrafast modulators and help explore polarization-dependent ultrafast dynamics in matter. Now, femtosecond polarization switching is realized through intraband optical excitation in an ultrathin semiconductor layer.

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Figure 1: Dynamic control of the polarization state of light using intraband optical excitation.

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Correspondence to Dongfang Li.

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Li, D. Femtosecond polarization switching. Nature Photon 11, 336–337 (2017). https://doi.org/10.1038/nphoton.2017.77

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