Please use this identifier to cite or link to this item:
|Title:||Creation of a needle of longitudinally polarized light in vacuum using binary optics|
|Source:||Wang, H., Shi, L., Luk̀yanchuk, B., Sheppard, C., Chong, C.T. (2008-08). Creation of a needle of longitudinally polarized light in vacuum using binary optics. Nature Photonics 2 (8) : 501-505. ScholarBank@NUS Repository. https://doi.org/10.1038/nphoton.2008.127|
|Abstract:||Recently many ideas have been proposed for the use of a longitudinal field for particle acceleration, fluorescent imaging, second-harmonic generation and Raman spectroscopy. A few methods to enhance the longitudinal field component have been suggested, but all have insufficient optical efficiency and non-uniform axial field strength. Here we report a new method that permits the combination of very unusual properties of light in the focal region, permitting the creation of a 'pure' longitudinal light beam with subdiffraction beam size (0.43λ). This beam is non-diffracting; that is, it propagates without divergence over a long distance (of about 4λ) in free space. This is achieved by focusing a radially polarized Bessel-Gaussian beam with a combination of a binary-phase optical element and a high-numerical-aperture lens. This binary optics works as a special polarization filter enhancing the longitudinal component. © 2008 Macmillan Publishers Limited. All rights reserved.|
|Source Title:||Nature Photonics|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Mar 7, 2018
WEB OF SCIENCETM
checked on Jan 30, 2018
checked on Mar 11, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.