High-resolution perfect imaging of micro/nanojet

A systematic theoretical study on elimination of imaging distortion for realization of perfect imaging of a micro/ nanojet in THz, visible and infrared regions has been performed on the basis of a two-layer structure formed by an exterior hexagonal prism and a cuboid (cube) or cylinder embedded in it. The study concentrates on effects of scatterer's geometry, propagation direction and polarization characteristics on ellipticity of the micro/nanojet. The geometry of scatterer involves height, side length, relative position of the exterior and interior layers. The study shows that imaging distortion can be eliminated in all spectral regions considered, and perfect images with an ellipticity of ~ 1.0 can be obtained on the basis of an optimal scatterer structure proposed. Meanwhile, high wave intensity (I/I0 > 23) and high imaging resolution (<0.30 lambda) beyond the diffraction limit are expected. The study also shows that the imaging and hence the morphology of micro/nanojet shows considerable effects of polarization state and direction of incident wave, and the effects are associated with both structure features of scatterer and polarization characteristics of incident wave. The perfect imaging of micro/nanojet shows great potential for its application in the field of high-resolution imaging at different frequency regions.

Automated summary

A systematic theoretical study was conducted on the elimination of imaging distortion for the perfect imaging of a micro/nanojet in THz, visible, and infrared regions. The study focused on the effects of the scatterer's geometry, propagation direction, and polarization characteristics on the ellipticity of the micro/nanojet. The study showed that imaging distortion can be eliminated in all considered spectral regions, and perfect images with an ellipticity of ~1.0 can be obtained based on an optimal scatterer structure proposed. High wave intensity and imaging resolution beyond the diffraction limit were also expected. The study also highlighted the considerable effects of the polarization state and direction of the incident wave on the imaging and morphology of the micro/nanojet, which are associated with the structure features of the scatterer and polarization characteristics of the incident wave. The perfect imaging of the micro/nanojet shows great potential for high-resolution imaging in different frequency regions.