Abstract
Colloidal solutions of gold nanoparticles in water were pumped by filamentary 800-nm, 100-fs laser pulses at variable supercritical peak powers and probed by the accompanying ultrashort white-light supercontinuum pulses. Their broadband (UV-near-IR) spectra revealed the localized plasmon resonance blue-shifting, broadening, and intensity reduction vs the incident peak laser power as a result of the increasing concentration of s-band free carriers additionally photoinjected from high-density d-bands.
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CITATION STYLE
Kudryashov, S. I., Samokhvalov, A. A., Shelygina, S. N., & Veiko, V. P. (2019). Tuning of localized plasmon resonance in colloidal gold nano-particles by ultrafast interband photoinjection of free carriers: Superplasmonic states? Applied Physics Letters, 115(16). https://doi.org/10.1063/1.5124950
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