| Plasmon-Assisted Phase-Matched Second- and Third-Harmonic Generation in Single-Negative Heterostructures |
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| 作者姓名： | 喻小强 周林 朱永元 祝世宁 |
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| 作者单位： | [1]National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093 [2]Department of Physics, Nanjing Xiaozhuang College, Nanjing 210017 |
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| 基金项目： | Supported by the National Natural Science Foundations of China under Grant Nos 10534020, 60578034 and 10604029. |
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| 摘 要： | Dispersion relations of surface plasmon polaritons （SPPs） in sandwiched optical systems are studied. The system is actually a kind of SPP waveguides, with two kinds of single negative material （SNG） as core and cladding layers, respectively. Since both TM and TE polarized SPPs can be excited in the structure, the dispersion of SPPs becomes more abundant and leads to colorful nonlinear opticM properties. The authors demonstrate the effective phase-matched second and third-harmonic generation （SHG, THG） assisted by the coupled SPPs. A cascaded second-order nonlinear process can Mso be achieved in the structure when the thickness of the core layer is properly selected, leading to the simultaneous SHG and THG. Further investigations show that much easier phase-matching can be fulfilled in the SNG waveguide array. Our results would be of potential use for surface-enhanced frequency conversion device such as light emitters or lasers.
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| 关 键 词： | 谐波发生 相匹配 等离子体偏振子 负性异质结构 |
| 收稿时间： | 2007-07-09 |
Plasmon-Assisted Phase-Matched Second- and Third-Harmonic Generation in Single-Negative Heterostructures |
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| YU Xiao-Qiang,ZHOU Lin,ZHU Yong-Yuan,ZHU Shi-Ning.Plasmon-Assisted Phase-Matched Second- and Third-Harmonic Generation in Single-Negative Heterostructures[J].Chinese Physics Letters,2008,25(1):274-277. |
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| Authors: | YU Xiao-Qiang ZHOU Lin ZHU Yong-Yuan ZHU Shi-Ning |
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| Institution: | National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093Department of Physics, Nanjing Xiaozhuang College, Nanjing 210017 |
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| Abstract: | Dispersion relations of surface plasmon polaritons (SPPs) in sandwiched optical systems are studied. The system is actually a kind of SPP waveguides, with two kinds of single negative material (SNG) as core and cladding layers,respectively. Since both TM and TE polarized SPPs can be excited in the structure, the dispersion of SPPs becomes more abundant and leads to colorful nonlinear optical properties. The authors demonstrate the effective phase-matched second and third-harmonic generation (SHG, THG) assisted by the coupled SPPs. A cascaded second-order nonlinear process can also be achieved in the structure when the thickness of the core layer is properly selected, leading to the simultaneous SHG and THG. Further investigations show that much easier phase-matching can be fulfilled in the SNG waveguidearray. Our results would be of potential use for surface-enhanced frequency conversion device such as light emitters or lasers. |
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| Keywords: | 74 78 Fk 73 20 Mf 78 67 -n |
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