title: 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.
authors: David
authors: D
authors: Grojo
authors: Nicolas
authors: N
authors: Sandeau
authors: Luca
authors: L
authors: Boarino
authors: Catalin
authors: C
authors: Constantinescu
authors: Natascia
authors: N
authors: De Leo
authors: Michele
authors: M
authors: Laus
authors: Katia
authors: K
authors: Sparnacci