Title :
Super-resolution focusing with polarized optical beam
Author :
Jie Lin ; Ran Chen ; Peng Jin ; Cada, Michael ; Yuan Ma
Author_Institution :
Dept. of Electr. & Comput. Eng., Dalhousie Univ., Halifax, NS, Canada
Abstract :
In this paper, focusing patterns are theoretically investigated by Richards-Wolf´s integral in a high numerical aperture lens illuminated by a polarized beam. The doughnut beam is introduced to achieve high resolution focusing spot. The focusing spot is as small as half of wavelength. Meanwhile, the optical needle with super-resolution lateral size is realized by using a complex amplitude filter. These research results can be used to achieve particle acceleration, optical trapping, imaging and so on.
Keywords :
integral equations; laser beams; lenses; light polarisation; optical filters; optical images; optical self-focusing; particle accelerators; radiation pressure; Richards-Wolf integral; complex amplitude filter; doughnut beam; focusing patterns; focusing spot; high numerical aperture lens; optical imaging; optical needle; optical trapping; particle acceleration; polarized optical beam; super-resolution focusing; Focusing; Lenses; Optical beams; Optical diffraction; Optical filters; Optical polarization;
Conference_Titel :
Electrical and Computer Engineering (CCECE), 2015 IEEE 28th Canadian Conference on
Conference_Location :
Halifax, NS
Print_ISBN :
978-1-4799-5827-6
DOI :
10.1109/CCECE.2015.7129492
