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Researchers at the University of Münster, the University of Birmingham, and the University of Marseille demonstrated a way to shape propagation-invariant light beams arbitrarily by using a smart-beam design based on caustics. Their approach generalizes caustic light from a small subset to a complete set of tailored, propagation-invariant caustics with intensities that can be concentrated around any desired curve. Applications in material processing, optical trapping, and cell microscopy could benefit from this new approach to engineering light shapes of arbitrary intensity.
The researchers developed methods to tailor the light’s wavefront, forming invariant, customized caustics as the envelope for families of rays. The…READ MORE