Thermally controlled femtosecond pulse shaping using metasurface based optical filters

Thermally controlled femtosecond pulse shaping using metasurface based optical filters AbstractShaping of the temporal distribution of the ultrashort pulses, compensation of pulse deformations due to phase shift in transmission and amplification are of interest in various optical applications. To address these problems, in this study, we have demonstrated an ultra-thin reconfigurable localized surface plasmon (LSP) band-stop optical filter driven by insulator-metal phase transition of vanadium dioxide. A Joule heating mechanism is proposed to control the thermal phase transition of the material. The resulting permittivity variation of vanadium dioxide tailors spectral response of the transmitted pulse from the stack. Depending on how the pulse’s spectrum is located with respect to the resonance of the band-stop filter, the thin film stack can dynamically compress/expand the output pulse span up to 20% or shift its phase up to 360°. Multi-stacked filters have shown the ability to dynamically compensate input carrier frequency shifts and pulse span variations besides their higher span expansion rates. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nanophotonics de Gruyter

Thermally controlled femtosecond pulse shaping using metasurface based optical filters

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Publisher
de Gruyter
Copyright
©2018 Eesa Rahimi and Kürşat Şendur, published by De Gruyter, Berlin/Boston
ISSN
2192-8614
eISSN
2192-8614
D.O.I.
10.1515/nanoph-2017-0089
Publisher site
See Article on Publisher Site

Abstract

AbstractShaping of the temporal distribution of the ultrashort pulses, compensation of pulse deformations due to phase shift in transmission and amplification are of interest in various optical applications. To address these problems, in this study, we have demonstrated an ultra-thin reconfigurable localized surface plasmon (LSP) band-stop optical filter driven by insulator-metal phase transition of vanadium dioxide. A Joule heating mechanism is proposed to control the thermal phase transition of the material. The resulting permittivity variation of vanadium dioxide tailors spectral response of the transmitted pulse from the stack. Depending on how the pulse’s spectrum is located with respect to the resonance of the band-stop filter, the thin film stack can dynamically compress/expand the output pulse span up to 20% or shift its phase up to 360°. Multi-stacked filters have shown the ability to dynamically compensate input carrier frequency shifts and pulse span variations besides their higher span expansion rates.

Journal

Nanophotonicsde Gruyter

Published: Feb 23, 2018

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