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Optical Metrology of Sub-Wavelength Objects Enabled by Artificial Intelligence
Carolina Rendón-Barraza, Eng Aik Chan, Guanghui Yuan +3
Microscopes and various forms of interferometers have been used for decades in optical metrology of objects that are typically larger than the wavelength of light λ. However, metro…
Unlabelled Far-field Deeply Subwavelength Superoscillatory Imaging (DSSI)
T. Pu, V. Savinov, G. Yuan +2
Recently it was reported that deeply subwavelength features of free space superoscillatory electromagnetic fields can be observed experimentally and used in optical metrology with…
'Plasmonics' in free space: observation of giant wavevectors, vortices and energy backflow in superoscillatory optical fields
Guang Hui Yuan, Edward T. F. Rogers, Nikolay I. Zheludev
Evanescent light can be localized at the nanoscale by resonant absorption in a plasmonic nanoparticle or taper or by transmission through a nanohole. However, a conventional lens c…
Achromatic super-oscillatory lenses with sub-wavelength focusing
Guang Hui Yuan, Edward T. F. Rogers, Nikolay I. Zheludev
Lenses are crucial to light-enabled technologies. Conventional lenses have been perfected to achieve near-diffraction-limited resolution and minimal chromatic aberrations. However,…