Terahertz wave emission from plasmonic chiral metasurfaces

Takahiro Matsui; Satoshi Tomita; Motoki Asai; Yuzuru Tadokoro; Keisuke Takano; Makoto Nakajima; Masanori Hangyo; Hisao Yanagi

doi:10.1007/s00339-016-9657-y

Terahertz wave emission from plasmonic chiral metasurfaces

Takahiro Matsui, Satoshi Tomita, Motoki Asai, Yuzuru Tadokoro, Keisuke Takano, Makoto Nakajima, Masanori Hangyo, Hisao Yanagi

IEHE - Division of Developmental Research in Education Programs

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Plasmonic chiral metasurfaces with pinwheellike structures are fabricated on silver films using a focused ion-beam milling technique. In time-domain spectroscopy, we observe terahertz (THz) wave emission from metasurfaces irradiated by a near-infrared Ti: sapphire ultrashort pulsed laser. The origin of the THz wave generation is likely to be tunnelling ionization accompanied with photoelectron acceleration by ponderomotive force. Numerical simulation is carried out toward improvement of the chiral metasurfaces for better emission of circularly polarized THz waves.

Original language	English
Article number	157
Journal	Applied Physics A: Materials Science and Processing
Volume	122
Issue number	3
DOIs	https://doi.org/10.1007/s00339-016-9657-y
Publication status	Published - 2016 Mar

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title = "Terahertz wave emission from plasmonic chiral metasurfaces",

abstract = "Plasmonic chiral metasurfaces with pinwheellike structures are fabricated on silver films using a focused ion-beam milling technique. In time-domain spectroscopy, we observe terahertz (THz) wave emission from metasurfaces irradiated by a near-infrared Ti: sapphire ultrashort pulsed laser. The origin of the THz wave generation is likely to be tunnelling ionization accompanied with photoelectron acceleration by ponderomotive force. Numerical simulation is carried out toward improvement of the chiral metasurfaces for better emission of circularly polarized THz waves.",

author = "Takahiro Matsui and Satoshi Tomita and Motoki Asai and Yuzuru Tadokoro and Keisuke Takano and Makoto Nakajima and Masanori Hangyo and Hisao Yanagi",

note = "Funding Information: The authors acknowledge valuable contribution by K. Miyake in the FIB milling and fruitful discussion with K. Iwami and S. Ohno. English proofreading by L. McDowell is also acknowledged. This work was supported by MEXT/JSPS KAKENHI (Grants Nos. 22109003, 22109005 and 26287065). Publisher Copyright: {\textcopyright} Springer-Verlag Berlin Heidelberg 2016.",

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doi = "10.1007/s00339-016-9657-y",

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AU - Matsui, Takahiro

AU - Tomita, Satoshi

AU - Asai, Motoki

AU - Tadokoro, Yuzuru

AU - Takano, Keisuke

AU - Nakajima, Makoto

AU - Hangyo, Masanori

AU - Yanagi, Hisao

N1 - Funding Information: The authors acknowledge valuable contribution by K. Miyake in the FIB milling and fruitful discussion with K. Iwami and S. Ohno. English proofreading by L. McDowell is also acknowledged. This work was supported by MEXT/JSPS KAKENHI (Grants Nos. 22109003, 22109005 and 26287065). Publisher Copyright: © Springer-Verlag Berlin Heidelberg 2016.

PY - 2016/3

Y1 - 2016/3

N2 - Plasmonic chiral metasurfaces with pinwheellike structures are fabricated on silver films using a focused ion-beam milling technique. In time-domain spectroscopy, we observe terahertz (THz) wave emission from metasurfaces irradiated by a near-infrared Ti: sapphire ultrashort pulsed laser. The origin of the THz wave generation is likely to be tunnelling ionization accompanied with photoelectron acceleration by ponderomotive force. Numerical simulation is carried out toward improvement of the chiral metasurfaces for better emission of circularly polarized THz waves.

AB - Plasmonic chiral metasurfaces with pinwheellike structures are fabricated on silver films using a focused ion-beam milling technique. In time-domain spectroscopy, we observe terahertz (THz) wave emission from metasurfaces irradiated by a near-infrared Ti: sapphire ultrashort pulsed laser. The origin of the THz wave generation is likely to be tunnelling ionization accompanied with photoelectron acceleration by ponderomotive force. Numerical simulation is carried out toward improvement of the chiral metasurfaces for better emission of circularly polarized THz waves.

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ER -

Terahertz wave emission from plasmonic chiral metasurfaces

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