arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv physics/0607281physics.optics
收藏

光子晶体辅助波导中二次谐波的分析

Analysis of second harmonic generation in photonic-crystal-assisted waveguides

Antonella D'Orazio, Domenico de Ceglia, Marco De Sario, Francesco Prudenzano, Mark J. Bloemer, Michael Scalora

摘要:

我们研究二次谐波产生的平面介质波导具有低折射率,聚合物芯层,由两个多层堆叠的边界。这种几何形状允许在纤芯区域内的基本波长处的光的特别强的限制,对于超过几厘米的距离,净传播损耗几乎为零,只要忽略材料和散射损耗。报道了波导的相位匹配配置,其中泵浦信号是波导的最低阶模式,并且所生成的二次谐波信号对应于波导的第三传播模式。使用chi(2)=100 pm/V的聚合物波导芯,我们预测在2 mm的传播距离之后,使用波导芯内1.35 GW/cm^2的峰值泵浦强度,转换效率约为90%。如果波导芯包含具有不同玻璃化转变温度的聚合物层,则可以独立地极化这些层以使重叠积分最大化,并且可以在大约500微米的距离上实现类似的泵浦损耗。

英文摘要:

We study second harmonic generation in a planar dielectric waveguide having a low-index, polymer core layer, bounded by two multilayer stacks. This geometry allows exceptionally strong confinement of the light at the fundamental wavelength inside the core region with virtually zero net propagation losses for distances that exceed several centimeters, provided material and scattering losses are neglected. A phase-matched configuration of the waveguide is reported in which the pump signal is the lowest-order mode of the waveguide, and the generated second harmonic signal corresponds to the third propagation mode of the waveguide. Using a polymer waveguide core, having chi(2)=100 pm/V, we predict a conversion efficiency of approximately 90% after a propagation distance of 2 mm, using peak pump intensities inside the core of the waveguide of 1.35 GW/cm^2. If the waveguide core contains polymer layers with different glass transition temperatures, the layers can be poled independently to maximize the overlap integral, and similar pump depletions may be achieved over a distance of approximately 500 microns.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑