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Proceedings Paper

Intracavity optical trapping with Ytterbium doped fiber ring laser
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Paper Abstract

We propose a novel approach for trapping micron-sized particles and living cells based on optical feedback. This approach can be implemented at low numerical aperture (NA=0.5, 20X) and long working distance. In this configuration, an optical tweezers is constructed inside a ring cavity fiber laser and the optical feedback in the ring cavity is controlled by the light scattered from a trapped particle. In particular, once the particle is trapped, the laser operation, optical feedback and intracavity power are affected by the particle motion. We demonstrate that using this configuration is possible to stably hold micron-sized particles and single living cells in the focal spot of the laser beam. The calibration of the optical forces is achieved by tracking the Brownian motion of a trapped particle or cell and analysing its position distribution.

Paper Details

Date Published: 12 September 2013
PDF: 8 pages
Proc. SPIE 8810, Optical Trapping and Optical Micromanipulation X, 88102S (12 September 2013); doi: 10.1117/12.2022899
Show Author Affiliations
Rania Sayed, Istituto Processi Chimico-Fisici, CNR (Italy)
Univ. degli studi Messina (Italy)
Fatemeh Kalantarifard, Bilkent Univ. (Turkey)
Parviz Elahi, Bilkent Univ. (Turkey)
F. Omer Ilday, Bilkent Univ. (Turkey)
Giovanni Volpe, Bilkent Univ. (Turkey)
Onofrio M. Maragò, Istituto Processi Chimico-Fisici, CNR (Italy)

Published in SPIE Proceedings Vol. 8810:
Optical Trapping and Optical Micromanipulation X
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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