Results 241 to 250 of about 67,616 (299)

Optical Activity Modulation in Chiral Metasurfaces via Structured Light. [PDF]

open access: yesNano Lett
Lalaguna PL   +7 more
europepmc   +1 more source

Mitigation of oxidative stress in chicken intestinal epithelial cells by functional nutrients. [PDF]

open access: yesJ Anim Sci Technol
Lee SY   +10 more
europepmc   +1 more source

Tight focusing of an asymmetric Bessel beam

Optics Communications, 2015
Abstract Tight focusing of a linearly polarized asymmetric Bessel beam, which has a topological charge n =3 and a crescent shape, was investigated numerically and experimentally. Using the Debye formulae, it was shown that the aplanatic lens of numerical aperture NA=0.9 forms a crescent in the focal plane.
VÍCTOR V Kotlyar   +2 more
exaly   +2 more sources

Tight focusing of radially polarized vortex laser pulse

open access: yesThe European Physical Journal Applied Physics, 2013
The tight focusing of femtosecond radially polarized vortex laser pulse by a high numerical aperture objective is investigated in this paper. Based on Richards-Wolf vectorial diffraction theory, the electric field and the group velocity of the radially polarized vortex femtosecond laser pulse are studied in great detail.
Lina Guo   +3 more
openaire   +2 more sources

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