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Relying on a photonic hook, or a type of near-field, self-bending curved light, an international team of researchers has proposed the creation of a curved laser blade for a medical scalpel. Currently, there are laser scalpels in use that feature axisymmetric focus areas, or a cylindrical blade. According to the researchers introducing the new design, changing the shape of the blade will expand the possibilities of using the laser in medicine, as it is about twice as thin as the cylindrical option.
To bend the beam in their setup, the researchers proposed an amplitude or phase mask at the end of a fiber. The mask redistributes the energy flow within the fiber and forms a curved region of radiation localization at the end of the fiber…READ MORE