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Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 5 — Mar. 1, 2012
  • pp: 821–823

Manipulation of doughnut focal spot by image inverting interferometry

Xiang Hao, Cuifang Kuang, Yanghui Li, and Xu Liu  »View Author Affiliations

Optics Letters, Vol. 37, Issue 5, pp. 821-823 (2012)

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Based on image inverting interference combined with phase modulation, we theoretically demonstrate that the doughnut focal spot can readily be manipulated, and either shrinkage or expansion of size of the central dark spot is possible in a large scale (peak-to-peak value: 0.555 λ 0.830 λ , or 93.3 % 140.8 % compared with the standard one). As the interference and phase modulation can both be achieved by a double Porro prism, it is feasible to introduce this approach into optical tweezers to improve their performance. As much as 33.9% intensity of stimulated emission depletion (STED) beam can be reduced if the further optimized configuration is utilized in STED microscopy.

© 2012 Optical Society of America

OCIS Codes
(050.1960) Diffraction and gratings : Diffraction theory
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(230.5480) Optical devices : Prisms
(350.4855) Other areas of optics : Optical tweezers or optical manipulation

ToC Category:
Diffraction and Gratings

Original Manuscript: January 9, 2012
Revised Manuscript: January 21, 2012
Manuscript Accepted: January 24, 2012
Published: February 24, 2012

Virtual Issues
Vol. 7, Iss. 5 Virtual Journal for Biomedical Optics

Xiang Hao, Cuifang Kuang, Yanghui Li, and Xu Liu, "Manipulation of doughnut focal spot by image inverting interferometry," Opt. Lett. 37, 821-823 (2012)

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