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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 16 — Aug. 15, 2007
  • pp: 2357–2359

Investigation of the center intensity of first- and second-order Laguerre–Gaussian beams with linear and circular polarization

Yoshinori Iketaki, Takeshi Watanabe, Nándor Bokor, and Masaaki Fujii  »View Author Affiliations


Optics Letters, Vol. 32, Issue 16, pp. 2357-2359 (2007)
http://dx.doi.org/10.1364/OL.32.002357


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Abstract

The vectorial Debye integral shows that tightly focused Laguerre–Gaussian (LG) beams have a residual intensity at the focal point for linear polarization, for a topological charge of m = 1 and 2. We measured the shapes of linearly and circularly polarized LG beams and found that a central intensity appeared at m = 1 and 2 for linear and right-handed circular polarization, however, it is completely canceled for left-handed circular polarization. In general, when the orbital angular momentum of the LG beam is parallel to the spin angular momentum of the photons, zero intensity is always achieved at the focus.

© 2007 Optical Society of America

OCIS Codes
(060.5060) Fiber optics and optical communications : Phase modulation
(180.2520) Microscopy : Fluorescence microscopy
(180.5810) Microscopy : Scanning microscopy
(260.5430) Physical optics : Polarization
(350.5030) Other areas of optics : Phase

ToC Category:
Microscopy

History
Original Manuscript: May 9, 2007
Revised Manuscript: June 13, 2007
Manuscript Accepted: June 14, 2007
Published: August 2, 2007

Virtual Issues
Vol. 2, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Yoshinori Iketaki, Takeshi Watanabe, Nándor Bokor, and Masaaki Fujii, "Investigation of the center intensity of first- and second-order Laguerre-Gaussian beams with linear and circular polarization," Opt. Lett. 32, 2357-2359 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-16-2357

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