2015
DOI: 10.1021/acs.nanolett.5b02534
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Tuning of Magnetic Optical Response in a Dielectric Nanoparticle by Ultrafast Photoexcitation of Dense Electron–Hole Plasma

Abstract: We propose a novel approach for efficient tuning of optical properties of a high refractive index subwavelength nanoparticle with a magnetic Mie-type resonance by means of femtosecond laser irradiation. This concept is based on ultrafast photoinjection of dense (>10(20) cm(-3)) electron-hole plasma within such nanoparticle, drastically changing its transient dielectric permittivity. This allows manipulation by both electric and magnetic nanoparticle responses, resulting in dramatic changes of its scattering di… Show more

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Cited by 176 publications
(152 citation statements)
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“…Apart from the harmonic generation, efficient tuning of optical properties of high-index nanoparticles near magnetic Mie-type resonances by means of femtosecond laser irradiation has also been demonstrated (62). The effect is based on ultrafast (<100 fs) photoinjection of dense electronhole plasma within such nanoparticles, drastically changing their transient dielectric permittivity.…”
Section: Nonlinear Optics With Resonant Dielectric Nanostructuresmentioning
confidence: 99%
“…Apart from the harmonic generation, efficient tuning of optical properties of high-index nanoparticles near magnetic Mie-type resonances by means of femtosecond laser irradiation has also been demonstrated (62). The effect is based on ultrafast (<100 fs) photoinjection of dense electronhole plasma within such nanoparticles, drastically changing their transient dielectric permittivity.…”
Section: Nonlinear Optics With Resonant Dielectric Nanostructuresmentioning
confidence: 99%
“…One of the first examples of these devices is the optical switch [13]. Other recent works show that nanoscale optical switches based in semiconductor nanoparticles are achieved by using ultrafast photoinjection of electron-hole plasma in a single nanoparticle [14] or by two-photon absorption to switch the magnetic Mie resonance [15]. In this sense, we also proposed an all-optical switch based on the directional scattering of semiconductor nanoparticles [16].…”
Section: Introductionmentioning
confidence: 93%
“…Therefore, implementation of plasmonic principles for developing of all-dielectric nonlinear nanodevices looks tempting. Recently, the enhancement of optical nonlinearities in resonant Si nanostructures has been demonstrated theoretically and experimentally at the scale of single nanoparticles [58][59][60][61][194][195][196][197].…”
Section: F Nonlinear Nanophotonics Applicationsmentioning
confidence: 99%