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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 20 — Oct. 1, 2007
  • pp: 13310–13317

Laser trapping of deformable objects

Naoki Murazawa, Saulius Juodkazis, Hiroaki Misawa, and Hiroshi Wakatsuki  »View Author Affiliations


Optics Express, Vol. 15, Issue 20, pp. 13310-13317 (2007)
http://dx.doi.org/10.1364/OE.15.013310


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Abstract

We report the trapping and manipulation of bubbles in viscous glass melts through the use of a laser. This phenomenon is observed in bubbles tens of micrometers in diameter under illumination by low numerical aperture (NA = 0.55). Once the bubble was centered on the optical axis, it was trapped and followed a lateral relocation of the laser beam. This phenomenon is explained by modifications of the bubble’s shape induced by axial heating and a decrease in surface tension. It is shown that formation of a concave dimple on the bubble’s front surface explains the observed laser trapping and manipulation. This mechanism of laser trapping is expected to take place in other deformable materials and can also be used to remove bubbles from melts or liquids. For this technique to be effective, the alteration of the bubble’s shape should be faster than its expulsion out of the laser’s point of focus.

© 2007 Optical Society of America

OCIS Codes
(070.4690) Fourier optics and signal processing : Morphological transformations
(140.7010) Lasers and laser optics : Laser trapping
(160.2750) Materials : Glass and other amorphous materials
(350.6980) Other areas of optics : Transforms

ToC Category:
Trapping

History
Original Manuscript: July 17, 2007
Revised Manuscript: September 17, 2007
Manuscript Accepted: September 23, 2007
Published: September 28, 2007

Virtual Issues
Vol. 2, Iss. 11 Virtual Journal for Biomedical Optics

Citation
Naoki Murazawa, Saulius Juodkazis, Hiroaki Misawa, and Hiroshi Wakatsuki, "Laser trapping of deformable objects," Opt. Express 15, 13310-13317 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-20-13310


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