Carnio B N, Elezzabi A Y
Opt Express. 2018 Oct 1;26(20):26283-26291. doi: 10.1364/OE.26.026283.
Nanoplasmonic waveguides based on lithium niobate (LN) are shown to provide the light-matter interaction required for next-generation developments in nonlinear frequency-conversion nanostructures. Here, we numerically investigate second harmonic generation of a 1550 nm, 100 fs pulse in metal-LN-metal (MLNM) nanoplasmonic and LN hybrid-plasmonic (LNHP) waveguides. In comparison to a photonic LN waveguide, a 2.1 µm-long LNHP waveguide exhibits a conversion efficiency improvement of 11 times, whereas a 20 µm-long MLNM nanoplasmonic waveguide is shown to have a conversion efficiency of 1.1 × 10. The MLNM nanoplasmonic and LNHP waveguides have the potential to operate as sources of optical radiation for on-chip photonic systems.
基于铌酸锂（LN）的纳米等离子体波导被证明可为非线性频率转换纳米结构的下一代发展提供所需的光与物质相互作用。在此，我们对金属 - LN - 金属（MLNM）纳米等离子体波导和LN混合等离子体（LNHP）波导中1550 nm、100 fs脉冲的二次谐波产生进行了数值研究。与光子LN波导相比，一个2.1 µm长的LNHP波导的转换效率提高了11倍，而一个20 µm长的MLNM纳米等离子体波导则显示出1.1×10的转换效率。MLNM纳米等离子体波导和LNHP波导有潜力作为片上光子系统的光辐射源。
