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 | |
| 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 | 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
Cite this
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 › Conference contribution
}
TY - GEN
T1 - Second harmonic generation circul dichroism in Au coated GaAs-based nanowires
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
PY - 2019/5/16
Y1 - 2019/5/16
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
KW - Second harmonic generation
UR - http://www.scopus.com/inward/record.url?scp=85065702128&partnerID=8YFLogxK
U2 - 10.1049/cp.2018.1632
DO - 10.1049/cp.2018.1632
M3 - Conference contribution
SN - 9781785617911
T3 - IET Conference Publications
BT - 20th Italian National Conference on Photonic Technologies (Fotonica 2018)
PB - Institution of Engineering and Technology
ER -