Second harmonic generation circul dichroism in Au coated GaAs-based nanowires

Alessandro Belardini; Joel T. Collins; David C. Hooper; Grigore Leahu; Emilija Petronijevic; Marco Centini; Roberto Li Voti; Teemu Hakkarainen; Eero Koivusalo; Marcelo Rizzo Piton; Soile Soumalainen; Mircea Guina; Ventsislav K. Valev; Concita Sibilia

doi:10.1049/cp.2018.1632

Second harmonic generation circul dichroism in Au coated GaAs-based nanowires

Alessandro Belardini, Joel T. Collins, David C. Hooper, Grigore Leahu, Emilija Petronijevic, Marco Centini, Roberto Li Voti, Teemu Hakkarainen, Eero Koivusalo, Marcelo Rizzo Piton, Soile Soumalainen, Mircea Guina, Ventsislav K. Valev, Concita Sibilia

Research output: Chapter in Book/Report/Conference proceeding › Chapter in a published conference proceeding

1 Citation (SciVal)

Abstract

Nanostructures with broken symmetry can interact with circularly polarized light to mimic chiroptical (chiral-optical) effects, usually observable in chiral media. This phenomenon is known as extrinsic chirality. Second harmonic generation (SHG) is extremely sensitive to symmetry breaking, down to a single atomic monolayer and it has been extensively used as a probe of extrinsic chirality. Here we present SHG measurements of GaAs nanowires partially covered with Au, fabricated by a self-catalysed technique. The Au coated GaAs nanowires give rise to a dramatic circular dichroism in the generated second harmonic signal, compared to nanowires without coating.

Original language	English
Title of host publication	20th Italian National Conference on Photonic Technologies (Fotonica 2018)
Publisher	Institution of Engineering and Technology
Edition	CP748
ISBN (Electronic)	978-1-78561-991-5
ISBN (Print)	9781785617911
DOIs	https://doi.org/10.1049/cp.2018.1632
Publication status	Published - 16 May 2019
Event	20th Italian National Conference on Photonic Technologies, Fotonica 2018 - Lecce, Italy Duration: 23 May 2018 → 25 May 2018

Publication series

Name	IET Conference Publications
Number	CP748
Volume	2018

Conference

Conference	20th Italian National Conference on Photonic Technologies, Fotonica 2018
Country/Territory	Italy
City	Lecce
Period	23/05/18 → 25/05/18

Keywords

Extrinsic chirality
GaAs nanowires
Plasmonic coating
Second harmonic generation

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1049/cp.2018.1632

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Belardini, A., Collins, J. T., Hooper, D. C., Leahu, G., Petronijevic, E., Centini, M., Voti, R. L., Hakkarainen, T., Koivusalo, E., Piton, M. R., Soumalainen, S., Guina, M., Valev, V. K., & Sibilia, C. (2019). Second harmonic generation circul dichroism in Au coated GaAs-based nanowires. In 20th Italian National Conference on Photonic Technologies (Fotonica 2018) (CP748 ed.). (IET Conference Publications; Vol. 2018, No. CP748). Institution of Engineering and Technology. https://doi.org/10.1049/cp.2018.1632

Second harmonic generation circul dichroism in Au coated GaAs-based nanowires. / Belardini, Alessandro; Collins, Joel T.; Hooper, David C.; Leahu, Grigore; Petronijevic, Emilija; Centini, Marco; Voti, Roberto Li; Hakkarainen, Teemu; Koivusalo, Eero; Piton, Marcelo Rizzo; Soumalainen, Soile; Guina, Mircea; Valev, Ventsislav K.; Sibilia, Concita.

20th Italian National Conference on Photonic Technologies (Fotonica 2018). CP748. ed. Institution of Engineering and Technology, 2019. (IET Conference Publications; Vol. 2018, No. CP748).

Research output: Chapter in Book/Report/Conference proceeding › Chapter in a published conference proceeding

Belardini, A, Collins, JT, Hooper, DC, Leahu, G, Petronijevic, E, Centini, M, Voti, RL, Hakkarainen, T, Koivusalo, E, Piton, MR, Soumalainen, S, Guina, M, Valev, VK & Sibilia, C 2019, Second harmonic generation circul dichroism in Au coated GaAs-based nanowires. in 20th Italian National Conference on Photonic Technologies (Fotonica 2018). CP748 edn, IET Conference Publications, no. CP748, vol. 2018, Institution of Engineering and Technology, 20th Italian National Conference on Photonic Technologies, Fotonica 2018, Lecce, Italy, 23/05/18. https://doi.org/10.1049/cp.2018.1632

Belardini, Alessandro ; Collins, Joel T. ; Hooper, David C. ; Leahu, Grigore ; Petronijevic, Emilija ; Centini, Marco ; Voti, Roberto Li ; Hakkarainen, Teemu ; Koivusalo, Eero ; Piton, Marcelo Rizzo ; Soumalainen, Soile ; Guina, Mircea ; Valev, Ventsislav K. ; Sibilia, Concita. / Second harmonic generation circul dichroism in Au coated GaAs-based nanowires. 20th Italian National Conference on Photonic Technologies (Fotonica 2018). CP748. ed. Institution of Engineering and Technology, 2019. (IET Conference Publications; CP748).

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abstract = "Nanostructures with broken symmetry can interact with circularly polarized light to mimic chiroptical (chiral-optical) effects, usually observable in chiral media. This phenomenon is known as extrinsic chirality. Second harmonic generation (SHG) is extremely sensitive to symmetry breaking, down to a single atomic monolayer and it has been extensively used as a probe of extrinsic chirality. Here we present SHG measurements of GaAs nanowires partially covered with Au, fabricated by a self-catalysed technique. The Au coated GaAs nanowires give rise to a dramatic circular dichroism in the generated second harmonic signal, compared to nanowires without coating.",

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AU - Belardini, Alessandro

AU - Collins, Joel T.

AU - Hooper, David C.

AU - Leahu, Grigore

AU - Petronijevic, Emilija

AU - Centini, Marco

AU - Voti, Roberto Li

AU - Hakkarainen, Teemu

AU - Koivusalo, Eero

AU - Piton, Marcelo Rizzo

AU - Soumalainen, Soile

AU - Guina, Mircea

AU - Valev, Ventsislav K.

AU - Sibilia, Concita

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N2 - Nanostructures with broken symmetry can interact with circularly polarized light to mimic chiroptical (chiral-optical) effects, usually observable in chiral media. This phenomenon is known as extrinsic chirality. Second harmonic generation (SHG) is extremely sensitive to symmetry breaking, down to a single atomic monolayer and it has been extensively used as a probe of extrinsic chirality. Here we present SHG measurements of GaAs nanowires partially covered with Au, fabricated by a self-catalysed technique. The Au coated GaAs nanowires give rise to a dramatic circular dichroism in the generated second harmonic signal, compared to nanowires without coating.

AB - Nanostructures with broken symmetry can interact with circularly polarized light to mimic chiroptical (chiral-optical) effects, usually observable in chiral media. This phenomenon is known as extrinsic chirality. Second harmonic generation (SHG) is extremely sensitive to symmetry breaking, down to a single atomic monolayer and it has been extensively used as a probe of extrinsic chirality. Here we present SHG measurements of GaAs nanowires partially covered with Au, fabricated by a self-catalysed technique. The Au coated GaAs nanowires give rise to a dramatic circular dichroism in the generated second harmonic signal, compared to nanowires without coating.

KW - Extrinsic chirality

KW - GaAs nanowires

KW - Plasmonic coating

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SN - 9781785617911

T3 - IET Conference Publications

BT - 20th Italian National Conference on Photonic Technologies (Fotonica 2018)

PB - Institution of Engineering and Technology

T2 - 20th Italian National Conference on Photonic Technologies, Fotonica 2018

Y2 - 22 May 2018 through 24 May 2018

ER -

Second harmonic generation circul dichroism in Au coated GaAs-based nanowires

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