The free-carrier dispersion effect with photo-excited free carriers provides all-optical control of the resonance of photonic crystal microcavities. Using this technique, a spatial light modulator comprising optically addressed cavity arrays has been developed for high-efficiency, high-bandwidth spatiotemporal modulation of light.
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Gurses, V. Enhancing spatiotemporal light modulators. Nat. Photon. 16, 818–820 (2022). https://doi.org/10.1038/s41566-022-01087-8
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DOI: https://doi.org/10.1038/s41566-022-01087-8
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