Resonant Raman scattering of nanocavity-confined acoustic phonons
Resonant Raman scattering of nanocavity-confined acoustic phonons
复制标题
纳米腔限制声子的共振拉曼散射
DOI：
--
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
A. Lemaître
中科院分区：
文献类型：
--
作者：
N. Lanzillotti;A. Fainstein;B. Jusserand;A. Lemaître
研究了一种结构，它是光子和声学声子的谐振器，并且可以进一步调谐到激子谐振。我们目前的拉曼散射实验下的双光共振，我们研究了进一步增强的光子-声子相互作用的可能性，共振激发的电子状态限制在声学纳米腔间隔。我们表明，通过这种电子共振的限制声学模式可以被放大。此外，我们报告存在的功能对应的布里渊区边缘和振荡的有限尺寸效应。与光弹性模型模拟的比较，显示出良好的协议与观察到的光谱特征。
A structure that is a resonator for photons and acoustic phonons and can be furthermore tuned to an exciton resonance is investigated. We present Raman-scattering experiments under double optical resonance, and we study the possibility of further enhancing the photon-phonon interaction by resonantly exciting an electronic state confined in the acoustic nanocavity spacer. We show that through this electronic resonance the confined acoustic mode can be amplified. In addition, we report the presence of features corresponding to the Brillouin zone edge and oscillations related to finite-size effects. A comparison with photoelastic model simulations is presented, showing a good agreement with the observed spectral features.