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Chin. Opt. Lett.
 Home  List of Issues    Issue 05 , Vol. 08 , 2010    10.3788/COL20100805.0517


Far-field properties of a cylindrically polarized vector beam and its beam quality beyond the paraxial approximation
Xinting Jia, Bo Li, Youqing Wang
College of Optoelectronic Science and Engineering, [Huazhong University of Science and Technology], Wuhan 430074, China

Chin. Opt. Lett., 2010, 08(05): pp.517-519-3

DOI:10.3788/COL20100805.0517
Topic:Physical optics
Keywords(OCIS Code): 260.2110  350.5500  260.5430  

Abstract
The far-field analytical expressions for the electromagnetic fields of a cylindrically polarized vector beam propagating in free space are obtained based on the vector angular spectrum and the method of stationary phase. The far-field energy flux distributions and the beam quality by the power in the bucket (PIB) in the nonparaxial regime have been investigated. The PIB of the cylindrically polarized beam depends on the ratio of the waist width to wavelength, the order of the Laguerre polynomial, and the angle between the electrical vector and the radial direction. The analyses show that azimuthal polarization compared with radial polarization has better energy focusability in the far field.

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Received:2009/9/3
Accepted:
Posted online:

Get Citation: Xinting Jia, Bo Li, Youqing Wang, "Far-field properties of a cylindrically polarized vector beam and its beam quality beyond the paraxial approximation," Chin. Opt. Lett. 08(05), 517-519-3(2010)

Note: This work was supported by the National Key Technology Research and Development Program under Grant No. 2007BAF11B01.



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