Accessing quadratic nonlinearities of metals through metallodielectric photonic-band-gap structures.
Accessing quadratic nonlinearities of metals through metallodielectric photonic-band-gap structures.
复制标题
DOI：
10.1103/physreve.74.036605
复制
发表时间：
2006-09
期刊：
影响因子：
--
通讯作者：
G. D’Aguanno;N. Mattiucci;M. Bloemer;M. Scalora
中科院分区：
文献类型：
--
作者：
G. D’Aguanno;N. Mattiucci;M. Bloemer;M. Scalora
我们研究了金属介电光子带隙结构中的二次谐波产生，该结构由交替的银层和一种普通的色散的线性介质材料组成。我们发现，在理想条件下，转换效率可以比单层银膜的最大转换效率高出两个数量级以上。我们根据结构上的位相匹配条件的同时可获得性和良好的场穿透金属层来解释这种增强。我们还给出了一个九周期Si3/N4Ag电堆的实际例子，与单层银层相比，后向转换效率提高了50倍。
We study second harmonic generation in a metallodielectric photonic-band-gap structure made of alternating layers of silver and a generic, dispersive, linear, dielectric material. We find that under ideal conditions the conversion efficiency can be more than two orders of magnitude greater than the maximum conversion efficiency achievable in a single layer of silver. We interpret this enhancement in terms of the simultaneous availability of phase matching conditions over the structure and good field penetration into the metal layers. We also give a realistic example of a nine-period, Si3/N4Ag stack, where the backward conversion efficiency is enhanced by a factor of 50 compared to a single layer of silver.