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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 22 — Oct. 27, 2008
  • pp: 17808–17816

Optics InfoBase > Optics Express > Volume 16 > Issue 22 > Page 17808

Tight focusing of plane waves from micro-fabricated spherical mirrors

J. Goldwin and E. A. Hinds  »View Author Affiliations


Optics Express, Vol. 16, Issue 22, pp. 17808-17816 (2008)
http://dx.doi.org/10.1364/OE.16.017808


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Abstract

We derive a formula for the light field of a monochromatic plane wave that is truncated and reflected by a spherical mirror. Within the scalar field approximation, our formula is valid even for deep mirrors, where the aperture radius approaches the radius of curvature. We apply this result to micro-fabricated mirrors whose size scales are in the range of tens to hundreds of wavelengths, and show that sub-wavelength focusing (full-width at half-maximum intensity) can be achieved. This opens up the possibility of scalable arrays of tightly focused optical dipole traps without the need for high-performance optical systems.

© 2008 Optical Society of America

OCIS Codes
(020.7010) Atomic and molecular physics : Laser trapping
(260.1960) Physical optics : Diffraction theory
(130.3990) Integrated optics : Micro-optical devices

ToC Category:
Physical Optics

History
Original Manuscript: September 15, 2008
Revised Manuscript: October 9, 2008
Manuscript Accepted: October 15, 2008
Published: October 17, 2008

Citation
J. Goldwin and E. A. Hinds, "Tight focusing of plane waves from micro-fabricated spherical mirrors," Opt. Express 16, 17808-17816 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-22-17808


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