Light Amplification with Low-Gain Material: Harvesting Harmonic Resonance Modes of Surface Plasmon Polaritons on a Magnetic Meta-Surface
Abstract
We theoretically show that it is feasible to utilize harmonic resonance modes of surface plasmon polaritons on a magnetic meta-surface for light amplification with low-gain material. The required threshold and optimal gain strength for active layer can be substantially reduced to about one-tenth as compared with those utilizing fundamental resonance modes. The findings provide a simple and practical metamaterial approach for light amplification with most of the existing active media.
Keywords
Surface plasmon polaritons Meta-surface Low-gain Light amplification High QNotes
Acknowledgments
This work was supported by NSFC (Grant No. 11174221, 10974144, 11204218, 61205041), CNKBRSF (Grant No. 2011CB922001), 863 Major Program (Grant No. 2012AA03A706), HK RGC grant 600308, the Fundamental Research Funds for the Central Universities, SHEDF (Grant No. 06SG24) and China Postdoctoral Science Foundation(Grant No. 2011M500810, 2012T50433). XY Jiang and W Li acknowledge NSFC (Grant No. 11004212, 10704080, 60877067 and 60938004) STCSM (Grant No. 08dj1400303) and SNSFC (Grant No. 11ZR1443800).
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