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- Title
Comparison of second harmonic generation from cross-polarized double-resonant metasurfaces on single crystals of Au.
- Authors
Habibullah, Yusuf B.; Ishihara, Teruya
- Abstract
As the SHG emission should be coherent to effective polarization of the structure, we should choose HT <math xmlns="http://www.w3.org/1998/Math/MathML"><mi> </mi></math> ht to make the integral maximum. Keywords: double resonance; metasurfaces; nonlocal response; second harmonic generation EN double resonance metasurfaces nonlocal response second harmonic generation 1931 1939 9 05/12/22 20220401 NES 220401 1 Introduction Second harmonic generation (SHG) is one of the 2nd order optical nonlinear effects, where two photons with angular frequency HT <math xmlns="http://www.w3.org/1998/Math/MathML"><mi> </mi></math> ht are combined to generate one with HT <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>2</mn><mi> </mi></math> ht . Electric field induced by fundamental and hypothetical light from the observation oscillates in time with angular frequency HT <math xmlns="http://www.w3.org/1998/Math/MathML"><mi> </mi></math> ht and HT <math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal"> </mi><mo>=</mo><mn>2</mn><mi> </mi></math> ht , respectively. As the effective length for resonance is much longer for I y i -excitation than I x i -excitation, we expect most efficient SHG in HT <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><msubsup><mi> </mi><mi>x</mi><mi>y</mi><mi>y</mi><mo>(</mo><mn>2</mn><mo>)</mo></msubsup></mrow></math> ht configuration under the double resonant condition.
- Subjects
SECOND harmonic generation; SINGLE crystals; POLARITONS; OPTICAL parametric amplifiers
- Publication
Nanophotonics (21928606), 2022, Vol 11, Issue 9, p1931
- ISSN
2192-8606
- Publication type
Article
- DOI
10.1515/nanoph-2021-0677