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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 3 — Feb. 11, 2013
  • pp: 2964–2970

Serial Raman spectroscopy of particles trapped on a waveguide

Pål Løvhaugen, Balpreet Singh Ahluwalia, Thomas R. Huser, and Olav Gaute Hellesø  »View Author Affiliations

Optics Express, Vol. 21, Issue 3, pp. 2964-2970 (2013)

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We demonstrate that Raman spectroscopy can be used to characterize and identify particles that are trapped and propelled along optical waveguides. To accomplish this, microscopic particles on a waveguide are moved along the waveguide and then individually addressed by a focused laser beam to obtain their characteristic Raman signature within 1 second acquisition time. The spectrum is used to distinguish between glass and polystyrene particles. After the characterization, the particles continue to be propelled along the straight waveguide. Alternatively, a waveguide loop with a gap is also investigated, and in this case particles are held in the gap for characterization before they are released.

© 2013 OSA

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(170.5660) Medical optics and biotechnology : Raman spectroscopy
(350.4855) Other areas of optics : Optical tweezers or optical manipulation

ToC Category:
Optical Trapping and Manipulation

Original Manuscript: November 12, 2012
Revised Manuscript: January 14, 2013
Manuscript Accepted: January 15, 2013
Published: January 31, 2013

Virtual Issues
Vol. 8, Iss. 3 Virtual Journal for Biomedical Optics

Pål Løvhaugen, Balpreet Singh Ahluwalia, Thomas R. Huser, and Olav Gaute Hellesø, "Serial Raman spectroscopy of particles trapped on a waveguide," Opt. Express 21, 2964-2970 (2013)

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