Optical second harmonic generation of V-shaped chromium nanoholes-dependence on the structure parameters of the nanoholes

Optical second harmonic generation of V-shaped chromium nanoholes-dependence on the structure parameters of the nanoholes

We investigated optical second harmonic generation (SHG) from the arrays of V‐shaped chromium nanoholes with the arm width of 50 nm. We systematically investigated the dependence of the SHG intensity on the designed parameters of Cr nanoholes, i.e. the arm length and apex angle. Several combinations...

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Veröffentlicht in:Surface and interface analysis 2014-12, Vol.46 (12-13), p.1240-1244
Hauptverfasser: Quang, Ngo Khoa, Miyauchi, Yoshihiro, Mizutani, Goro, Charlton, Martin D., Chen, Ruiqi, Boden, Stuart, Rutt, Harvey
Format: Artikel
Sprache:eng
Schlagworte:
Apex angle
arm length
Arrays
bulk contribution
Chromium
Cr metal
Expansion
Interface analysis
modification of SHG
nanoholes
Nanostructure
nonlinear susceptibility elements
Nonlinearity
Second harmonic generation
second harmonic generation (SHG)
structural parameters
V-shaped structure
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Zusammenfassung:We investigated optical second harmonic generation (SHG) from the arrays of V‐shaped chromium nanoholes with the arm width of 50 nm. We systematically investigated the dependence of the SHG intensity on the designed parameters of Cr nanoholes, i.e. the arm length and apex angle. Several combinations of structural parameters of apex angles (A) and arm lengths (L) were examined. The SHG intensity in Pin/Pout configuration was enhanced when L was enlarged. We suggest that the nonlinear optical behavior was dictated by the bulk contribution of metallic electrons. Copyright © 2014 John Wiley & Sons, Ltd.
ISSN:0142-2421
1096-9918
DOI:10.1002/sia.5643