Shaping caustics into propagation-invariant light.

Nature Communications
Alessandro ZannottiMark R Dennis

Abstract

Structured light has revolutionized optical particle manipulation, nano-scaled material processing, and high-resolution imaging. In particular, propagation-invariant light fields such as Bessel, Airy, or Mathieu beams show high robustness and have a self-healing nature. To generalize such beneficial features, these light fields can be understood in terms of caustics. However, only simple caustics have found applications in material processing, optical trapping, or cell microscopy. Thus, these technologies would greatly benefit from methods to engineer arbitrary intensity shapes well beyond the standard families of caustics. We introduce a general approach to arbitrarily shape propagation-invariant beams by smart beam design based on caustics. We develop two complementary methods, and demonstrate various propagation-invariant beams experimentally, ranging from simple geometric shapes to complex image configurations such as words. Our approach generalizes caustic light from the currently known small subset to a complete set of tailored propagation-invariant caustics with intensities concentrated around any desired curve.

References

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Citations

Nov 15, 2020·Micromachines·Svetlana Nikolaevna KhoninaMuhammad Ali Butt
Mar 11, 2021·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Ernesto Espíndola-RamosRamón Silva-Ortigoza
Jul 16, 2021·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·F Camas-AquinoP A Quinto-Su
Sep 11, 2021·Scientific Reports·Ramon DroopCornelia Denz

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Methods Mentioned

BETA
light sheet microscopy

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