arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2403.03332physics.optics
收藏

拉曼散射的物理极限:泵浦与信号协同设计的关键作用

Physical limits on Raman scattering: the critical role of pump and signal co-design

Alessio Amaolo, Pengning Chao, Thomas J. Maldonado, Sean Molesky, Alejandro W. Rodriguez

AI总结:

本文提出推导结构化介质中拉曼散射极限的方法,揭示泵浦与信号协同设计对实现真实增强的关键作用,可推动SERS与拉曼激光应用。

摘要:

我们提出了一种推导结构化介质中拉曼散射极限的方法,并利用该方法约束平面波入射到结构化介质附近的单个拉曼分子或可设计的拉曼介质上时所能产生的最大拉曼信号。针对金属和介电结构的结果表明,考虑泵浦场与信号场之间的非线性相互作用至关重要,并显示此前工作中将泵浦聚焦与信号提取过程分开处理会导致不切实际的增强效果。该公式可广泛应用于进一步增强表面增强拉曼散射(SERS)光谱学和拉曼辅助激光。

英文摘要:

We present a method for deriving limits on Raman scattering in structured media and exploit it to constrain the maximum Raman signal resulting from a planewave incident on either a single Raman molecule in the vicinity of a structured medium or a designable Raman medium. Results pertaining to metallic and dielectric structures illustrate the importance of accounting for the nonlinear interplay between pump and signal fields, showing that treating the pump-focusing and signal-extraction processes separately, as in prior work, leads to unrealistic enhancements. The formulation could readily find applications in further enhancing surface-enhanced Raman scattering (SERS) spectroscopy and Raman-assisted lasing.

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。

↑