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Multifocus with small size, uniform intensity, and nearly circular symmetry |
Optics Letters, Vol. 36, Issue 12, pp. 2200-2202 (2011)
http://dx.doi.org/10.1364/OL.36.002200
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Abstract
We investigate in detail the focusing properties of the composite vector beam (CVB) composed of two orthogonally linearly polarized beams with inhomogeneous polarization modulation. By optimizing the modulation factor, a multifocus with excellent quality is obtained, where the sizes of each focus are fairly smaller than that of the focusing spot of a radially polarized beam, the uniformity in the intensity of the focal spots is as high as 1, and the distributions of each focal spot have nearly circular symmetry. In order to decrease the power loss of the incident beam, the CVB formed by an annular beam is demonstrated as the substitute for the optimized CVB formed by a Gaussian beam. This work is important for high-resolution and high-speed imaging in biology and micro- nanofabrication.
© 2011 Optical Society of America
OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(110.2990) Imaging systems : Image formation theory
(220.4000) Optical design and fabrication : Microstructure fabrication
(260.5430) Physical optics : Polarization
ToC Category:
Imaging Systems
History
Original Manuscript: April 12, 2011
Revised Manuscript: May 4, 2011
Manuscript Accepted: May 4, 2011
Published: June 7, 2011
Virtual Issues
Vol. 6, Iss. 7 Virtual Journal for Biomedical Optics
Citation
Hanming Guo, Xiangmei Dong, Xiaoyu Weng, Guorong Sui, Ning Yang, and Songlin Zhuang, "Multifocus with small size, uniform intensity, and nearly circular symmetry," Opt. Lett. 36, 2200-2202 (2011)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-36-12-2200
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