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Optics Letters

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  • Vol. 36, Iss. 7 — Apr. 1, 2011
  • pp: 1185–1187

Achievement of longitudinally polarized focusing with long focal depth by amplitude modulation

Jie Lin, Ke Yin, Yuda Li, and Jiubin Tan  »View Author Affiliations


Optics Letters, Vol. 36, Issue 7, pp. 1185-1187 (2011)
http://dx.doi.org/10.1364/OL.36.001185


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Abstract

The longitudinal component of a focused beam is split into two parts along the optical axis to obtain a longitudinally polarized long focal depth using amplitude filtering based on Euler transformation and a radially polarized Bessel–Gaussian beam. Numerical results indicate that long focal depth and FWHM can be easily achieved with 9 λ and 0.8 λ , respectively. A radially polarized beam can be converted into a longitudinally polarized beam with a conversion efficiency of 51.0%. It can therefore be believed that the proposed scheme can be widely used to generate a longitudinally polarized beam for particle acceleration, laser cutting, and optical trapping.

© 2011 Optical Society of America

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(140.3300) Lasers and laser optics : Laser beam shaping
(220.3620) Optical design and fabrication : Lens system design
(260.5430) Physical optics : Polarization

ToC Category:
Diffraction and Gratings

History
Original Manuscript: January 27, 2011
Manuscript Accepted: February 11, 2011
Published: March 25, 2011

Virtual Issues
Vol. 6, Iss. 5 Virtual Journal for Biomedical Optics

Citation
Jie Lin, Ke Yin, Yuda Li, and Jiubin Tan, "Achievement of longitudinally polarized focusing with long focal depth by amplitude modulation," Opt. Lett. 36, 1185-1187 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-7-1185

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