纳米晶体中的拉曼位移

Investigations of Graphene on SrTiO3 Single-Crystal using Confocal Raman Spectroscopy

Graphene layers placed on SrTiO3 single-crystal substrates were investigated using temperature-dependent confocal Raman spectroscopy. This approach successfully resolved distinct Raman modes of graphene that are often untraceable in conventional measurements due to the strong Raman scattering background of SrTiO3. Information on defects and strain states was obtained for a few graphene/SrTiO3 samples that were synthesized by different techniques. This confocal Raman spectroscopic approach can shed light on the investigation of not only this graphene/SrTiO3 system but also various two-dimension…

拉曼光谱和红外光谱的有限温度效应确定固体分子氢的晶体结构相III

Anhamonic finite temperature effects on the Raman and Infrared spectra to determine the crystal structure phase III of solid molecular hydrogen

我们目前的拉曼光谱和红外光谱的理论计算，以及在零和有限的温度下的电子性质，以阐明固体分子氢的第III相的晶体结构。我们发现，非调和有限温度是特别重要的，定性地影响的主要结论。虽然P6 $_3$ /m在核基态是最有可能的第三相的候选者，在有限的温度下，C2/c结构似乎更合适。

Ultrafast control of material optical properties via the infrared resonant Raman effect

The Raman effect -- inelastic scattering of light by lattice vibrations (phonons) -- produces an optical response closely tied to a material's crystal structure. Here we show that resonant optical excitation of IR and Raman phonons gives rise to a Raman scattering effect that can induce giant shifts to the refractive index and induce new optical constants that are forbidden in the equilibrium crystal structure. We complete the description of light-matter interactions mediated by coupled IR and Raman phonons in crystalline insulators -- currently the focus of numerous experiments aiming to dyna…

有机分子晶体拉曼光谱中缺陷的表现（COMPUTER模型）

Manifestation of Defects in Raman Effect of Light Spectra of Organic Molecular Crystals (COMPUTER Modeling)

本文计算了有机分子晶体在考虑各种结构缺陷时的频谱。它示出了如何存在的空位，取向无序，和表面存在影响光谱。发现每个缺陷在光谱中具有一组特征谱线。

充气空芯光子晶体光纤中的孤子自频率蓝移

Soliton self-frequency blue-shift in gas-filled hollow-core photonic crystal fibers

我们从理论上表明，光电离过程中的空芯光子晶体光纤填充的拉曼惰性惰性气体导致一个恒定的加速孤子在时域中的连续移位到更高的频率，仅限于电离损失。这一现象与实芯玻璃光纤中孤子的拉曼自频红移相反。我们还预测了非常规的长程非局域孤子相互作用的存在，导致光谱和时间孤子集群。此外，如果纤芯中填充拉曼活性分子气体，则在同一光纤中可以发生红移、蓝移和稳定孤子之间的光谱转换。