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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 44, Iss. 23 — Aug. 10, 2005
  • pp: 4870–4873

Tunable three-dimensional intensity distribution by a pure phase-shifting apodizer

Xiumin Gao, Zhou Fei, Wendong Xu, and Fuxi Gan  »View Author Affiliations


Applied Optics, Vol. 44, Issue 23, pp. 4870-4873 (2005)
http://dx.doi.org/10.1364/AO.44.004870


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Abstract

The three-dimensional distribution of light intensity that is modulated by a pure phase-shifting apodizer is studied. Results show that the Strehl ratio can be altered by the proposed apodizer and by the waist width of incident Gaussian beams. By changing geometrical parameters of the proposed apodizer, we can increase the focal depth to several times that of the original system. The proposed apodizer can also be used to realize focal splitting and local minimum of intensity, which may be advantageous for constructing an optical trap. Furthermore, the local minimum of intensity number is tunable by changing the parameters of the apodizer.

© 2005 Optical Society of America

OCIS Codes
(050.1380) Diffraction and gratings : Binary optics
(050.1970) Diffraction and gratings : Diffractive optics
(050.5080) Diffraction and gratings : Phase shift
(140.7010) Lasers and laser optics : Laser trapping
(220.1230) Optical design and fabrication : Apodization
(220.2560) Optical design and fabrication : Propagating methods

History
Original Manuscript: February 17, 2004
Manuscript Accepted: February 25, 2005
Published: August 10, 2005

Citation
Xiumin Gao, Zhou Fei, Wendong Xu, and Fuxi Gan, "Tunable three-dimensional intensity distribution by a pure phase-shifting apodizer," Appl. Opt. 44, 4870-4873 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-23-4870

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