Ultrafast modulation of femtosecond laser pulses in direct-gap semiconductor metasurfaces with magnetic resonances

Ultrafast modulation of femtosecond laser pulses in direct-gap semiconductor metasurfaces with magnetic resonances

We experimentally demonstrate ultrafast all-optical modulation in periodic arrays of subwavelength gallium arsenide nanodisks with localized Mie-type resonances. The efficient laser pulse modulation of up to 90% on the picosecond scale in the vicinity of the magnetic dipole resonance at a low pump f...

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Hauptverfasser: Zubyuk, Varvara V., Shcherbakov, Maxim R., Vabishchevich, Polina P., Liu, Sheng, Vaskin, Aleksandr, Keeler, Gordon A., Pertsch, Thomas, Dolgova, Tatyana V., Staude, Isabelle, Brener, Igal, Fedyanin, Andrey A.
Format: Tagungsbericht
Sprache:eng
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Zusammenfassung:We experimentally demonstrate ultrafast all-optical modulation in periodic arrays of subwavelength gallium arsenide nanodisks with localized Mie-type resonances. The efficient laser pulse modulation of up to 90% on the picosecond scale in the vicinity of the magnetic dipole resonance at a low pump fluence below 400 µJ/cm2 is shown by transient reflectance spectroscopy.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4998073