Back to Search
Start Over
Three-dimensional focus engineering using dipole array radiation pattern
- Source :
-
Optics Communications . Jun2011, Vol. 284 Issue 12, p2668-2671. 4p. - Publication Year :
- 2011
-
Abstract
- Abstract: A systematic three-dimensional focus engineering method based on the dipole-array radiation pattern is proposed. High numerical aperture focusing of generalized cylindrical vector beam is interpreted as the reversing of the radiation from electrically small dipole arrays. Required pupil plane illumination can be found for the desired focal field with specific characteristics. Magnetic-dipole array radiation is utilized to create ultra-long (~8λ) diffraction limited three-dimensional optical tube with maximal uniformity. Combined with a recently reported optical needle field generation with the help of electric dipole array radiation, ultra-long (~8λ) three-dimensional flattop focus that has top hat profiles in both transversal and longitudinal directions can be realized with the help of radiations pattern from co-located magnetic and electric dipole arrays. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00304018
- Volume :
- 284
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Optics Communications
- Publication Type :
- Academic Journal
- Accession number :
- 60240715
- Full Text :
- https://doi.org/10.1016/j.optcom.2011.02.030