TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

Hot electron dynamics in ultrafast multilayer epsilon-near-zero metamaterials

Tutkimustuotosvertaisarvioitu

Standard

Hot electron dynamics in ultrafast multilayer epsilon-near-zero metamaterials. / Rashed, Alireza R.; Yildiz, Bilge Can; Ayyagari, Surya R.; Caglayan, Humeyra.

julkaisussa: Physical Review B - Condensed Matter and Materials Physics, Vuosikerta 101, Nro 16, 165301, 06.04.2020.

Tutkimustuotosvertaisarvioitu

Harvard

Rashed, AR, Yildiz, BC, Ayyagari, SR & Caglayan, H 2020, 'Hot electron dynamics in ultrafast multilayer epsilon-near-zero metamaterials', Physical Review B - Condensed Matter and Materials Physics, Vuosikerta. 101, Nro 16, 165301. https://doi.org/10.1103/PhysRevB.101.165301

APA

Rashed, A. R., Yildiz, B. C., Ayyagari, S. R., & Caglayan, H. (2020). Hot electron dynamics in ultrafast multilayer epsilon-near-zero metamaterials. Physical Review B - Condensed Matter and Materials Physics, 101(16), [165301]. https://doi.org/10.1103/PhysRevB.101.165301

Vancouver

Rashed AR, Yildiz BC, Ayyagari SR, Caglayan H. Hot electron dynamics in ultrafast multilayer epsilon-near-zero metamaterials. Physical Review B - Condensed Matter and Materials Physics. 2020 huhti 6;101(16). 165301. https://doi.org/10.1103/PhysRevB.101.165301

Author

Rashed, Alireza R. ; Yildiz, Bilge Can ; Ayyagari, Surya R. ; Caglayan, Humeyra. / Hot electron dynamics in ultrafast multilayer epsilon-near-zero metamaterials. Julkaisussa: Physical Review B - Condensed Matter and Materials Physics. 2020 ; Vuosikerta 101, Nro 16.

Bibtex - Lataa

@article{a6f4ddba07d54dffb52757725750e799,
title = "Hot electron dynamics in ultrafast multilayer epsilon-near-zero metamaterials",
abstract = "Realizing remarkable tunability in optical properties without sacrificing speed is critical to obtain all optical ultrafast devices. In this work, we investigate the ultrafast temporal behavior of optically tunable epsilon-near-zero (ENZ) metamaterials, operating in the visible spectral range. To perform this the ultrafast dynamics of the hot electrons is acquired by femtosecond pump-probe spectroscopy and studied based on a two-temperature model (2TM). We show that pumping with femtosecond pulses changes the effective permittivity of the metamaterial by more than 400{\%}. This significant modulation is more pronounced in the ENZ region and we confirm this by the 2TM. The realized ultrafast modulation in effective permittivity, along with the ultrashort relaxation time of 3.3 ps, opens another avenue towards ultrafast photonic applications.",
author = "Rashed, {Alireza R.} and Yildiz, {Bilge Can} and Ayyagari, {Surya R.} and Humeyra Caglayan",
note = "INT=phys,{"}Ayyagari, Surya R.{"}",
year = "2020",
month = "4",
day = "6",
doi = "10.1103/PhysRevB.101.165301",
language = "English",
volume = "101",
journal = "Physical Review B",
issn = "1098-0121",
publisher = "AMER PHYSICAL SOC",
number = "16",

}

RIS (suitable for import to EndNote) - Lataa

TY - JOUR

T1 - Hot electron dynamics in ultrafast multilayer epsilon-near-zero metamaterials

AU - Rashed, Alireza R.

AU - Yildiz, Bilge Can

AU - Ayyagari, Surya R.

AU - Caglayan, Humeyra

N1 - INT=phys,"Ayyagari, Surya R."

PY - 2020/4/6

Y1 - 2020/4/6

N2 - Realizing remarkable tunability in optical properties without sacrificing speed is critical to obtain all optical ultrafast devices. In this work, we investigate the ultrafast temporal behavior of optically tunable epsilon-near-zero (ENZ) metamaterials, operating in the visible spectral range. To perform this the ultrafast dynamics of the hot electrons is acquired by femtosecond pump-probe spectroscopy and studied based on a two-temperature model (2TM). We show that pumping with femtosecond pulses changes the effective permittivity of the metamaterial by more than 400%. This significant modulation is more pronounced in the ENZ region and we confirm this by the 2TM. The realized ultrafast modulation in effective permittivity, along with the ultrashort relaxation time of 3.3 ps, opens another avenue towards ultrafast photonic applications.

AB - Realizing remarkable tunability in optical properties without sacrificing speed is critical to obtain all optical ultrafast devices. In this work, we investigate the ultrafast temporal behavior of optically tunable epsilon-near-zero (ENZ) metamaterials, operating in the visible spectral range. To perform this the ultrafast dynamics of the hot electrons is acquired by femtosecond pump-probe spectroscopy and studied based on a two-temperature model (2TM). We show that pumping with femtosecond pulses changes the effective permittivity of the metamaterial by more than 400%. This significant modulation is more pronounced in the ENZ region and we confirm this by the 2TM. The realized ultrafast modulation in effective permittivity, along with the ultrashort relaxation time of 3.3 ps, opens another avenue towards ultrafast photonic applications.

U2 - 10.1103/PhysRevB.101.165301

DO - 10.1103/PhysRevB.101.165301

M3 - Article

VL - 101

JO - Physical Review B

JF - Physical Review B

SN - 1098-0121

IS - 16

M1 - 165301

ER -