Intracavity optical trapping with Ytterbium doped fiber ring laser

Rania Sayed; Fatemeh Kalantarifard; Parviz Elahi; F. Omer Ilday; Giovanni Volpe; Onofrio M. Maragò

doi:10.1117/12.2022899

12 September 2013 Intracavity optical trapping with Ytterbium doped fiber ring laser

Rania Sayed, Fatemeh Kalantarifard, Parviz Elahi, F. Omer Ilday, Giovanni Volpe, Onofrio M. Maragò

Proceedings Volume 8810, Optical Trapping and Optical Micromanipulation X; 88102S (2013) https://doi.org/10.1117/12.2022899
Event: SPIE NanoScience + Engineering, 2013, San Diego, California, United States

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.

Citation Download Citation

Rania Sayed, Fatemeh Kalantarifard, Parviz Elahi, F. Omer Ilday, Giovanni Volpe, and Onofrio M. Maragò "Intracavity optical trapping with Ytterbium doped fiber ring laser", Proc. SPIE 8810, Optical Trapping and Optical Micromanipulation X, 88102S (12 September 2013); https://doi.org/10.1117/12.2022899

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