The diffraction limit,rooted in the wave nature of light and formalized by the Heisenberg uncertainty principle,imposes a fundamental constraint on optical resolution and device miniaturization.The recent discovery of...The diffraction limit,rooted in the wave nature of light and formalized by the Heisenberg uncertainty principle,imposes a fundamental constraint on optical resolution and device miniaturization.The recent discovery of the singular dispersion equation in dielectric media provides a rigorous,lossless framework for overcoming this barrier.Here,we demonstrate that achieving such confinement necessarily involves a new class of optical eigenmodes—narwhalshaped wavefunctions—which emerge from the singular dispersion equation and uniquely combine global Gaussian decay with local power-law enhancement.These wavefunctions enable full-space field localization beyond conventional limits.Guided by this principle,we design and experimentally realize a three-dimensional sub-diffraction-limited cavity that supports narwhal-shaped wavefunctions,achieving an ultrasmall mode volume of 5×10^(-7)λ^(3).We term this class of systems singulonic,and define the emerging field of singulonics as a new nanophotonic paradigm—establishing a platform for confining and manipulating light at deep-subwavelength scales without dissipation,enabled by the singular dispersion equation.Building on this extreme confinement,we introduce singular field microscopy:a near-field imaging technique that employs singulonic eigenmodes as intrinsically localized,background-free light sources.This enables optical imaging at a spatial resolution ofλ/1000,making atomic-scale optical microscopy possible.Our findings open new frontiers for unprecedented control over light–matter interactions at the smallest possible scales.展开更多
Overcoming the diffraction limit in optics is challenging and demands a profound understanding of light behavior under extreme confinement.The newly developed framework,termed singulonics,demonstrates the formation of...Overcoming the diffraction limit in optics is challenging and demands a profound understanding of light behavior under extreme confinement.The newly developed framework,termed singulonics,demonstrates the formation of sub-diffraction limit narwhal-shaped optical modes under specific conditions.Experimental implementation of this field confinement within a tiny sub-wavelength volume enables the acquisition of near-field super resolution images.展开更多
基金supported by National Natural Science Foundation of China(grant nos.12225402,12450005,91950115,11774014,62321004,92250302).
文摘The diffraction limit,rooted in the wave nature of light and formalized by the Heisenberg uncertainty principle,imposes a fundamental constraint on optical resolution and device miniaturization.The recent discovery of the singular dispersion equation in dielectric media provides a rigorous,lossless framework for overcoming this barrier.Here,we demonstrate that achieving such confinement necessarily involves a new class of optical eigenmodes—narwhalshaped wavefunctions—which emerge from the singular dispersion equation and uniquely combine global Gaussian decay with local power-law enhancement.These wavefunctions enable full-space field localization beyond conventional limits.Guided by this principle,we design and experimentally realize a three-dimensional sub-diffraction-limited cavity that supports narwhal-shaped wavefunctions,achieving an ultrasmall mode volume of 5×10^(-7)λ^(3).We term this class of systems singulonic,and define the emerging field of singulonics as a new nanophotonic paradigm—establishing a platform for confining and manipulating light at deep-subwavelength scales without dissipation,enabled by the singular dispersion equation.Building on this extreme confinement,we introduce singular field microscopy:a near-field imaging technique that employs singulonic eigenmodes as intrinsically localized,background-free light sources.This enables optical imaging at a spatial resolution ofλ/1000,making atomic-scale optical microscopy possible.Our findings open new frontiers for unprecedented control over light–matter interactions at the smallest possible scales.
文摘Overcoming the diffraction limit in optics is challenging and demands a profound understanding of light behavior under extreme confinement.The newly developed framework,termed singulonics,demonstrates the formation of sub-diffraction limit narwhal-shaped optical modes under specific conditions.Experimental implementation of this field confinement within a tiny sub-wavelength volume enables the acquisition of near-field super resolution images.
