Abstract
For the development of new kinds of refractive-index sensors for capillary electrophoresis, we investigated the scattering of an off-axis incident Gaussian beam by a homogeneous dielectric cylinder at normal incidence. The numerical calculations are based on the exact solution of the Helmholtz equation in circular cylindrical coordinates. Contrary to the procedures with geometrical and paraxial models, this procedure gives accurate results even when the beam dimensions are of the order of the wavelength of light and when the beam diameter is greater than the diameter of the dielectric cylinder. This rigorous electromagnetic treatment is verified by experimental measurements for cylinders with diameters from 5 to 100 μm.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.