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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Franco Gori
  • Vol. 31, Iss. 7 — Jul. 1, 2014
  • pp: 1395–1400

Generation of hollow beam with radially polarized vortex beam and complex amplitude filter

Jie Lin, Ran Chen, Haichao Yu, Peng Jin, Yuan Ma, and Michael Cada  »View Author Affiliations


JOSA A, Vol. 31, Issue 7, pp. 1395-1400 (2014)
http://dx.doi.org/10.1364/JOSAA.31.001395


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Abstract

The generation of hollow beams with a long focal depth from a radially polarized Bessel–Gaussian beam with a second-order vortex phase and an amplitude filter is theoretically investigated by Richards–Wolf’s integral. The null intensity on the optical axis is achieved by introducing the second-order vortex. The long focal depth is a result of the amplitude filtering based on the cosine function and Euler transformation. Numerical results indicate that the focal depth of a hollow beam is improved from 0.96λ to 2.28λ with a slight increase of the transverse size for the simplest amplitude filter design. The intensity distribution twist phenomenon of the x- and y-polarized components around the optical axis due to the introducing of the vortex phase is also discussed. It is believed that the proposed scheme can be used to achieve particle acceleration and optical trapping.

© 2014 Optical Society of America

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(140.3300) Lasers and laser optics : Laser beam shaping
(260.5430) Physical optics : Polarization
(050.4865) Diffraction and gratings : Optical vortices

ToC Category:
Diffraction and Gratings

History
Original Manuscript: March 18, 2014
Revised Manuscript: April 28, 2014
Manuscript Accepted: April 29, 2014
Published: June 9, 2014

Citation
Jie Lin, Ran Chen, Haichao Yu, Peng Jin, Yuan Ma, and Michael Cada, "Generation of hollow beam with radially polarized vortex beam and complex amplitude filter," J. Opt. Soc. Am. A 31, 1395-1400 (2014)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-31-7-1395

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