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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 3 — Jan. 31, 2011
  • pp: 2711–2719

Photothermal trapping of dielectric particles by optical fiber-ring

Hongbao Xin, Hongxiang Lei, Yao Zhang, Xingmin Li, and Baojun Li  »View Author Affiliations

Optics Express, Vol. 19, Issue 3, pp. 2711-2719 (2011)

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The removal of dielectric particles and bacteria from water is an extremely important global issue, particularly, for drinking and sanitation. This work provides a demonstration of optical purification of water using an optical fiber-ring. The size of particles suspended in water for trapping is 2.08 μm in diameter and the wavelength of light used for inducing photothermal effect is 1.55 μm with a power of 97 mW. The fiber, 6 μm in diameter, was formed to a racket-shaped ring with a minimum diameter of 167 μm and a maximum one of 350 μm. Experiment indicates that the particles moved toward the ring with the highest velocity of 4.2 μm/s and are trapped/assembled in the center of the ring once the laser beam of 1.55-μm wavelength was launched into the fiber. With a moving of the fiber-ring, the trapped/assembled particles were moved and the water can be purified by removal of the particles.

© 2011 OSA

OCIS Codes
(350.5340) Other areas of optics : Photothermal effects
(350.4855) Other areas of optics : Optical tweezers or optical manipulation

ToC Category:
Optical Trapping and Manipulation

Original Manuscript: December 7, 2010
Revised Manuscript: January 19, 2011
Manuscript Accepted: January 19, 2011
Published: January 27, 2011

Virtual Issues
Vol. 6, Iss. 2 Virtual Journal for Biomedical Optics

Hongbao Xin, Hongxiang Lei, Yao Zhang, Xingmin Li, and Baojun Li, "Photothermal trapping of dielectric particles by optical fiber-ring," Opt. Express 19, 2711-2719 (2011)

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