We report on our recent approaches focused on the formation of a new class of subwavelength scale self-bending light beams, discovered in 2015, in application to in-plane surface plasmon. For the particle with broken symmetry (Janus particle) the morphology of the field localization area depends on the orientation of the particle that resembles the two faces of “Janus bifrons”. Photonic hook (PH) light do not propagate along straight line but instead follow curved trajectory. Wavefront analysis of such asymmetric mesoscale structure reveals that the unequal phase of the transmitted plane wave results in the irregularly concave deformation of the wavefront inside the structure that then leads to creation of the PH. Such dielectric structures enabling the realization of ultracompact wavelength-scaled and wavelength selective new inplane nanophotonic components.
In the past few years, it has shown that photonic jet – a high-intensity near-field focus can be curved through focusing of an asymmetric mesoscale dielectric particle. This unique electromagnetic beam configuration breaking spatial symmetry was termed ‘photonic hooks’ and demonstrated different features from Airy-family beams using a relatively simple experimental setup. The measured radius of the photonic curvature it creates approximates to half of the wavelength, which is the smallest curvature of electromagnetic wave ever reported. This effect was discovered in many relevant fields, including near-field optics (both in transmitted and reflection modes), terahertz (THz) radiation, in-plane plasmonics, and acoustics, and this paper is a short review for them.
To develop new ideas, scientists are reaching out to their colleagues around the world - academic research is becoming ever more international in science, technology and innovation. Ideas transcend borders, no country controls the marketplace of scientific ideas. New ideas come when you interact with scientists from diverse Universities and Institutes. Constructive interference increases power above sum of individual powers. In a brief review, we share the experience of scientific international cooperation with various research groups in the field of terahertz mesoscale photonics, plasmonics and acoustics, carried out under the guidance of professors of Tomsk Polytechnic University I.V.Minin and O.V.Minin.
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