3D manipulation of micro-objects based on optical tweezers using acousto-optic deflector and variofocal system

Yulia V. Pichugina; Pavel A. Nosov; Vladislav I. Batshev; Alexander S. Machikhin; Alexey B. Kozlov; Georgy K. Krasin

doi:10.1117/12.2525390

21 June 2019 3D manipulation of micro-objects based on optical tweezers using acousto-optic deflector and variofocal system

Yulia V. Pichugina, Pavel A. Nosov, Vladislav I. Batshev, Alexander S. Machikhin, Alexey B. Kozlov, Georgy K. Krasin

Author Affiliations +

Proceedings Volume 11060, Optical Methods for Inspection, Characterization, and Imaging of Biomaterials IV; 110601A (2019) https://doi.org/10.1117/12.2525390
Event: SPIE Optical Metrology, 2019, Munich, Germany

Abstract

Optical tweezers are of particular interest in various fields of science and technology such as atomic physics, nanotechnology and micromechanics. Today, there are many devices for manipulating microscopic objects using optical tweezers. In comparison with the most of known manipulation systems, the acousto-optic deflection is characterized by higher speed, the possibility to control several optical traps independently, high-precision movement of the trap within the field of view. In optical tweezers, longitudinal movement of micro-objects is also required. For this, special optical systems with variable characteristics, may be used. In this paper, we propose to combine these two approaches in one setup for 3D manipulation, i.e. to use acousto-optic scanning, using Bessel optical beams and an optical variosystem designed for longitudinal movement of the Gaussian beam waist at its constant diameter.

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Yulia V. Pichugina, Pavel A. Nosov, Vladislav I. Batshev, Alexander S. Machikhin, Alexey B. Kozlov, and Georgy K. Krasin "3D manipulation of micro-objects based on optical tweezers using acousto-optic deflector and variofocal system", Proc. SPIE 11060, Optical Methods for Inspection, Characterization, and Imaging of Biomaterials IV, 110601A (21 June 2019); https://doi.org/10.1117/12.2525390

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KEYWORDS

Acousto-optics

Bessel beams

Optical tweezers

Axicons

Diffraction

Crystals

Gaussian beams

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