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arXiv · 2508.10742

Theory of superlensing with complex frequency illuminations

Philippe Lalanne·Tong Wu
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Abstract

Recent experiments have demonstrated that the resolution of superlensing slabs can be significantly enhanced with complex frequency illuminations. In this study, we introduce a novel theoretical framework for analyzing superlensing. The framework offers new and transparent insights. It helps clarify what resolution can be expected with complex frequency, or more generally pulse illuminations, but it also highlights inherent limitations and tempers high expectations raised by the recent electromagnetic experiments. [accepted Optica]

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Philippe Lalanne, Tong Wu. 2025-08-14. Theory of superlensing with complex frequency illuminations. https://arxiv.org/abs/2508.10742

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