Wuhan National Laboratory for Optoelectronics & School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China.
Opt Lett. 2013 Jun 15;38(12):2089-91. doi: 10.1364/OL.38.002089.
We theoretically investigate the quadratic nonlinear property of a silicon-organic hybrid plasmonic waveguide with a thin polymer layer deposited on top of a silicon slab and covered by a metal cap. Due to the hybridization property of the waveguide modes, efficient phase-matched second harmonic generation (SHG) from mid-infrared (IR) (3.1 μm) to near-IR (1.55 μm) wavelengths are achieved with a small fabrication-error sensitivity (225 nm ≤ tolerated waveguide width ≤ 378 nm) and a large bandwidth (Δλ=100 nm). The SHG yield is as large as 8.8% for a pumping power of 100 mW.
我们从理论上研究了在硅片上沉积一层薄聚合物层并覆盖金属帽的硅-有机混合等离子体波导的二次非线性特性。由于波导模式的杂交特性，在较小的制造误差灵敏度（225nm≤允许波导宽度≤378nm）和较大的带宽（Δλ=100nm）下，从中红外（3.1μm）到近红外（1.55μm）波长实现了高效的相位匹配二次谐波产生（SHG）。对于 100mW 的泵浦功率，SHG 的产率高达 8.8%。
