Article (Scientific journals)
The origin of second harmonic generation hotspots in chiral optical metamaterials
Valev, V.K.; Zheng, X.; Biris, C.G. et al.
2011In Optical Materials Express, 1, p. 36
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Keywords :
Nonlinear microscopy; Nonlinear optics at surfaces; Chiral media
Abstract :
[en] Novel ways to detect the handedness in chiral optical metamaterials by means of the second harmonic generation (SHG) process have recently been proposed. However, the precise origin of the SHG emission has yet to be unambiguously established. In this paper, we present computational simulations of both the electric currents and the electromagnetic fields in chiral planar metamaterials, at the fundamental frequency (FF), and discuss the implications of our results on the characteristics of experimentally measured SHG. In particular, we show that the results of our numerical simulations are in good agreement with the experimental mapping of SHG sources. Thus, the SHG in these metamaterials can be attributed to a strong local enhancement of the electromagnetic fields at the FF, which depends on the particular structure of the patterned metamaterial.
Disciplines :
Physics
Author, co-author :
Valev, V.K.;  Katholieke Universiteit Leuven - KUL
Zheng, X.;  Katholieke Universiteit Leuven - KUL
Biris, C.G.;  University College London - UCL
Silhanek, Alejandro  ;  Katholieke Universiteit Leuven - KUL
Voskiy, V.;  Katholieke Universiteit Leuven - KUL
De Clercq, B.;  Universiteit Hasselt - UH
Atksipetrov, O.A.;  Lomonosov Moscow State University - MSU
Ameloot, M.;  Universiteit Hasselt - UH
Panoiu, N.C.;  University College London - UCL
Vandenbosch, G.A.E.;  Katholieke Universiteit Leuven - KUL
Moshchalkov, V.V.;  Katholieke Universiteit Leuven - KUL
Language :
English
Title :
The origin of second harmonic generation hotspots in chiral optical metamaterials
Publication date :
April 2011
Journal title :
Optical Materials Express
eISSN :
2159-3930
Publisher :
Optical Society of America, Washington DC, United States - Washington
Volume :
1
Pages :
36
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 08 February 2015

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