Journal
APPLIED PHYSICS LETTERS
Volume 94, Issue 13, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3111437
Keywords
metamaterials; nonlinear optics; optical harmonic generation; optical modulation
Categories
Funding
- NSFC [60531020, 60671003, 60701007, 60801005]
- 863 Project [2009AA01Z227]
- ZJNSF [R1080320, Y1080715]
- MEC [20070335120, 200803351025]
- [NCET-07-0750]
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The nonlinear properties of a metamaterial sample composed of double-layer metallic patterns and voltage controllable diodes are experimentally investigated. Second harmonics and spectrum modulations are clearly observed in a wide band of microwave frequencies, showing that this kind of metamaterial is not only tunable by low dc bias voltage but also behaves strong nonlinear property under a small power incidence. These properties are difficult to be found in normal naturally occurring materials.
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