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Measurement of Raman spectra of single airborne absorbing particles trapped by a single laser beam |
Optics Letters, Vol. 38, Issue 4, pp. 416-418 (2013)
http://dx.doi.org/10.1364/OL.38.000416
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Abstract
We demonstrate a method for optical trapping and Raman spectroscopy of micron-sized, airborne absorbing particles using a single focused laser beam. A single Gaussian beam at 532 nm is used to trap and precisely manipulate absorbing airborne particles. The fluctuation of the position of the trapped particles is substantially reduced by controlling the power of the laser beam with a position-sensitive detector and a locking circuit. Raman spectra of the position-stabilized particles or clusters are then measured with an objective and CCD spectrograph.
© 2013 Optical Society of America
OCIS Codes
(170.5660) Medical optics and biotechnology : Raman spectroscopy
(350.4855) Other areas of optics : Optical tweezers or optical manipulation
ToC Category:
Medical Optics and Biotechnology
History
Original Manuscript: December 12, 2012
Revised Manuscript: January 3, 2013
Manuscript Accepted: January 4, 2013
Published: February 7, 2013
Virtual Issues
Vol. 8, Iss. 3 Virtual Journal for Biomedical Optics
Citation
Lin Ling and Yong-qing Li, "Measurement of Raman spectra of single airborne absorbing particles trapped by a single laser beam," Opt. Lett. 38, 416-418 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-4-416
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