复频率激励下光散射的无界性
Beyond Bounds on Light Scattering with Complex Frequency Excitations
摘要：
光散射是光学中最成熟的波动现象之一，是光与物质相互作用的核心，对纳米光子应用至关重要。被动性、因果性和能量守恒意味着对小粒子散射的控制程度有严格的界限，这对许多光学器件的性能有影响。在这里，我们证明了这些界限可以通过考虑在复杂的频率激发，产生极端的散射响应定制的纳米粒子达到准稳态制度。这些机制可用于设计纳米结构的光散射，超出非侵入性传感，成像和纳米级光操纵的传统限制。
英文摘要：
Light scattering is one of the most established wave phenomena in optics, lying at the heart of light-matter interactions and of crucial importance for nanophotonic applications. Passivity, causality and energy conservation imply strict bounds on the degree of control over scattering from small particles, with implications on the performance of many optical devices. Here, we demonstrate that these bounds can be surpassed by considering excitations at complex frequencies, yielding extreme scattering responses as tailored nanoparticles reach a quasi-steady-state regime. These mechanisms can be used to engineer light scattering of nanostructures beyond conventional limits for noninvasive sensing, imaging, and nanoscale light manipulation.
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。
