title: Controllable and enhanced photonic jet generated by fiber combined with spheroid.
abstract: Dielectric microparticles are used as simple and low-cost means to achieve strong intensity confinement below the standard diffraction limit. Here we report the demonstration of enhanced light intensity in the vicinity of optical fiber combined with dielectric spheroidal particles. Specific attention is paid to the study of the influences of the spheroid's ellipticity (ratio of horizontal length to vertical length) as well as the refractive index on the intensity enhancement and focal distance. It reveals that simply varying the ellipticity, it is possible to obtain localized photon fluxes having different characteristics. This could yield a new superenhanced intensity device with excellent optical properties and low manufacturing cost for using visible light in many areas of biology, material sciences, chemistry, medicine, and tissue engineering.
authors.forename: Lu
authors.initials: L
authors.lastname: Han
authors.forename: Yiping
authors.initials: Y
authors.lastname: Han
authors.forename: Jiajie
authors.initials: J
authors.lastname: Wang
authors.forename: Gerard
authors.initials: G
authors.lastname: Gouesbet
authors.forename: Gerard
authors.initials: G
authors.lastname: Gréhan