DocumentCode
1384896
Title
Transverse Spin Angular Momentum of Airy Beams
Author
Kim, Kyoung-Youm
Author_Institution
Dept. of Opt. Eng., Sejong Univ., Seoul, South Korea
Volume
4
Issue
6
fYear
2012
Firstpage
2333
Lastpage
2339
Abstract
We show that a (1+1)D Airy beam can contain the density of spin angular momentum (SAM) normal to the direction of propagation if the polarization direction of its magnetic-field component is orthogonal to the transverse axis of the Airy profile. Although the total SAM of the Airy beam is equal to zero, its main lobe (or main intensity peak) can contain a nonvanishing SAM. The transversal asymmetry inherent in the Airy beam, which results in its acceleration during propagation, determines the overall direction of this nonvanishing SAM.
Keywords
angular momentum; laser beams; light polarisation; light propagation; (1+1)D Airy beam; SAM; magnetic-field component; polarization direction; transversal asymmetry; transverse spin angular momentum; Acceleration; Optical beams; Optical diffraction; Optical polarization; Optical propagation; Airy beam; polarization; spin angular momentum (SAM);
fLanguage
English
Journal_Title
Photonics Journal, IEEE
Publisher
ieee
ISSN
1943-0655
Type
jour
DOI
10.1109/JPHOT.2012.2232286
Filename
6377224
Link To Document