Quasi-phase-matching of the dual-band nonlinear left-handed metamaterial

Journal Article · Mon Nov 17 04:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4902417· OSTI ID:22392004

Liu, Yahong; Song, Kun; Gu, Shuai; Liu, Zhaojun; Guo, Lei; Zhao, Xiaopeng ^[1]; Zhou, Xin ^[2]

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1. Smart Materials Laboratory, Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710129 (China)
2. The National Research Institute of Radio Spectrum Management, Xi'an 710061 (China)

We demonstrate a type of nonlinear meta-atom creating a dual-band nonlinear left-handed metamaterial (DNLHM). The DNLHM operates at two distinct left-handed frequency bands where there is an interval of one octave between the two center frequencies. Under the illumination of a high-power signal at the first left-handed frequency band corresponding to fundamental frequency (FF), second-harmonic generation (SHG) is observed at the second left-handed band. This means that our DNLHM supports backward-propagating waves both at FF and second-harmonic (SH) frequency. We also experimentally demonstrate quasi-phase-matching configurations for the backward SHG. This fancy parametric process can significantly transmits the SH generated by an incident FF wave.

• OSTI ID: 22392004
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 20 Vol. 105; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
HARMONIC GENERATION
ILLUMINANCE
METAMATERIALS
NONLINEAR PROBLEMS
SIGNALS