Microcubes aided photonic jet scalpel tips for potential use in ultraprecise laser surgery

The task of development of compact light-focusing tools for biomedical applications is challenging due to subwavelength focusing in such devices. In this study we have shown that it is possible to focusing light beyond the diffraction limit by 3D mesoscale particles in application to laser scalpel tips for potential use in ultraprecise laser surgery. The focusing properties as a single as a chain of cubic particles including metamaterials are discussed to form ultraprecise subdiffraction area both axisymmetrical and curvelinear (photonic hook scalpel).