Journal article
Beam transmission through hole arrays
A Roberts
Optics Express | Published : 2010
DOI: 10.1364/OE.18.002528
Abstract
Transmission of beams through arrays of coaxial apertures in a thick, perfectly conducting screen is investigated using an angular spectrum approach. It is shown that the transfer function of the screen is complex and strongly dependent on the wavelength and polarization of the incident field and the geometric properties of the screen. Examples of changes in the angular spectrum composition of linearly, radially and azimuthally polarized beams as well as near-field intensity patterns are presented and the role played by different resonant transmission mechanisms discussed. ©2010 Optical Society of America.
Grants
Awarded by Australian Research Council
Funding Acknowledgements
The author would like to acknowledge stimulating discussions with Peter Torok and Arthur van de Nes of Imperial College. This research was supported under Australian Research Council's Discovery Projects funding scheme ( project number DP0878268).