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Optical second harmonic generation from V-shaped chromium nanohole arrays

Optical second harmonic generation from V-shaped chromium nanohole arrays
Optical second harmonic generation from V-shaped chromium nanohole arrays
We observed rotational anisotropy of optical second harmonic generation (SHG) from V-shaped chromium nanohole arrays with 150 nm arm-length, 50 nm width, 360 nm periodicity, 120° apex angle, and an area of 100 µm2, fabricated by electron beam lithography. Phenomenological analysis indicated that the effective nonlinear susceptibility element chi(2)[313] had a characteristic contribution to the observed anisotropic SHG intensity patterns. Here coordinate 1 is in the direction of the tip of V shapes in the substrate plane, and 3 indicates the direction perpendicular to the sample surface. The SHG intensity for the S-polarized output light was very weak, probably due to cancellation effect by the image dipoles created at the metal-air boundary. The possible origin of the observed nonlinearity was discussed according to the susceptibility elements obtained.
0021-4922
T21713
Quang, Ngo Khoa
61bfaded-c0dd-4481-a90f-cd0c16cd810b
Miyauchi, Yoshihiro
0b233961-6dfe-4319-ba92-6221e4d504a2
Mizutani, Goro
65900bcb-3c20-4fb1-9048-3db4c4cffc6a
Charlton, Martin D.
fcf86ab0-8f34-411a-b576-4f684e51e274
Chen, Ruiqi
59f6c60e-4144-403b-81eb-c2b3482b9bf6
Boden, Stuart
83976b65-e90f-42d1-9a01-fe9cfc571bf8
Rutt, Harvey
e09fa327-0c01-467a-9898-4e7f0cd715fc
Quang, Ngo Khoa
61bfaded-c0dd-4481-a90f-cd0c16cd810b
Miyauchi, Yoshihiro
0b233961-6dfe-4319-ba92-6221e4d504a2
Mizutani, Goro
65900bcb-3c20-4fb1-9048-3db4c4cffc6a
Charlton, Martin D.
fcf86ab0-8f34-411a-b576-4f684e51e274
Chen, Ruiqi
59f6c60e-4144-403b-81eb-c2b3482b9bf6
Boden, Stuart
83976b65-e90f-42d1-9a01-fe9cfc571bf8
Rutt, Harvey
e09fa327-0c01-467a-9898-4e7f0cd715fc

Quang, Ngo Khoa, Miyauchi, Yoshihiro, Mizutani, Goro, Charlton, Martin D., Chen, Ruiqi, Boden, Stuart and Rutt, Harvey (2014) Optical second harmonic generation from V-shaped chromium nanohole arrays. [in special issue: JJAP Special Issue] Japanese Journal of Applied Physics, 53 (2S), T21713. (doi:10.7567/JJAP.53.02BC11).

Record type: Article

Abstract

We observed rotational anisotropy of optical second harmonic generation (SHG) from V-shaped chromium nanohole arrays with 150 nm arm-length, 50 nm width, 360 nm periodicity, 120° apex angle, and an area of 100 µm2, fabricated by electron beam lithography. Phenomenological analysis indicated that the effective nonlinear susceptibility element chi(2)[313] had a characteristic contribution to the observed anisotropic SHG intensity patterns. Here coordinate 1 is in the direction of the tip of V shapes in the substrate plane, and 3 indicates the direction perpendicular to the sample surface. The SHG intensity for the S-polarized output light was very weak, probably due to cancellation effect by the image dipoles created at the metal-air boundary. The possible origin of the observed nonlinearity was discussed according to the susceptibility elements obtained.

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e-pub ahead of print date: 29 January 2014
Published date: 2014
Organisations: Optoelectronics Research Centre, Nanoelectronics and Nanotechnology

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Local EPrints ID: 354723
URI: https://eprints.soton.ac.uk/id/eprint/354723
ISSN: 0021-4922
PURE UUID: 0cd385a1-582c-4b21-9dd4-4a6dcab15ecb
ORCID for Stuart Boden: ORCID iD orcid.org/0000-0002-4232-1828

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Date deposited: 18 Jul 2013 10:43
Last modified: 14 Dec 2018 01:34

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Contributors

Author: Ngo Khoa Quang
Author: Yoshihiro Miyauchi
Author: Goro Mizutani
Author: Martin D. Charlton
Author: Ruiqi Chen
Author: Stuart Boden ORCID iD
Author: Harvey Rutt

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