Production of photonic nanojets by using pupil-masked 3D dielectric cuboid
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In: Journal of Physics D: Applied Physics, Vol. 50, 175102, 2017.
Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Production of photonic nanojets by using pupil-masked 3D dielectric cuboid
AU - Yue, Liyang
AU - Yan, Bing
AU - Monks, James
AU - Wang, Zengbo
AU - Nguyen, Thanh Tung
AU - Vu, DinhLam
AU - Minin, Oleg
AU - Minin, Igor
PY - 2017
Y1 - 2017
N2 - Photonic nanojets can be created via plane wave irradiation of multi-shaped mesoscale dielectric particles, and a waist of full-width at half-maximum (FWHM) smaller than the diffraction limit can be achieved in this process. In this paper, photonic nanojet produced by a pupil-masked 3D dielectric cuboid lens is numerically investigated under the irradiation of 532 nm wavelength plane wave. It is found that a pupil-masked cuboid lens is not only able to produce photonic nanojets with shorter FWHMs, but also increase its maximal intensity at certain masking ratios on the receiving surface. This phenomenon is different from the result of the spherical-lens reported in previous publications, and is attributed to the convergence of power flow and near-field numerical aperture (NA) increase after analysis of simulated power flow diagrams.
AB - Photonic nanojets can be created via plane wave irradiation of multi-shaped mesoscale dielectric particles, and a waist of full-width at half-maximum (FWHM) smaller than the diffraction limit can be achieved in this process. In this paper, photonic nanojet produced by a pupil-masked 3D dielectric cuboid lens is numerically investigated under the irradiation of 532 nm wavelength plane wave. It is found that a pupil-masked cuboid lens is not only able to produce photonic nanojets with shorter FWHMs, but also increase its maximal intensity at certain masking ratios on the receiving surface. This phenomenon is different from the result of the spherical-lens reported in previous publications, and is attributed to the convergence of power flow and near-field numerical aperture (NA) increase after analysis of simulated power flow diagrams.
U2 - 10.1088/1361-6463/aa61cb
DO - 10.1088/1361-6463/aa61cb
M3 - Article
VL - 50
JO - Journal of Physics D: Applied Physics
JF - Journal of Physics D: Applied Physics
SN - 0022-3727
M1 - 175102
ER -