Bessel-like photonic nanojets from core-shell sub-wavelength spheres

Abstract : It is accepted so far that the formation of photonic nanojets requires the use of large dielectric spheres (several wavelengths in diameter). Here we show both numerically and experimentally that similar effects can be obtained with properly engineered sub-wavelength core-shell colloids. The design of the spheres is strongly inspired by a far-field approach for the generation of Bessel beams.
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https://hal.archives-ouvertes.fr/hal-01018128
Contributor : Nicolas Sandeau <>
Submitted on : Thursday, July 3, 2014 - 4:28:17 PM
Last modification on : Monday, March 4, 2019 - 2:04:24 PM

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David Grojo, Nicolas Sandeau, L. Boarino, Catalin Constantinescu, N. de Leo, et al.. Bessel-like photonic nanojets from core-shell sub-wavelength spheres. Optics Letters, Optical Society of America, 2014, 39 (13), pp.3989-3992. ⟨10.1364/OL.39.003989⟩. ⟨hal-01018128⟩

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