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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 5, Iss. 5 — May. 10, 2007
  • pp: 257–259

Focal evolution induced by combination of nonspiral and spiral phase plates

Xiumin Gao and Jian Wang  »View Author Affiliations


Chinese Optics Letters, Vol. 5, Issue 5, pp. 257-259 (2007)


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Abstract

Focusing properties of Gaussian beam induced by nonspiral and spiral phase plates are investigated numerically. The nonspiral phase plate introduces phase singularity to the incident beam, and the spiral one adjusts the radial phase distribution. Intensity distributions in geometrical focal plane show that the parameters of phase plates can alter the intensity distributions considerably. And local dark focal spots may be obtained, the focal spot may evolve into a circle, a two-peak spot, or a curve line, which indicates that the combination of nonspiral and spiral phase plates can be used to form novel focal spots.

© 2007 Chinese Optics Letters

OCIS Codes
(220.1230) Optical design and fabrication : Apodization
(230.0230) Optical devices : Optical devices
(350.5030) Other areas of optics : Phase

Citation
Xiumin Gao and Jian Wang, "Focal evolution induced by combination of nonspiral and spiral phase plates," Chin. Opt. Lett. 5, 257-259 (2007)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-5-5-257

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