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arXiv · 1509.05908

Tuning the Stiffness Asymmetry of Optical Tweezers via Polarization Control

Jinmyoung So·Jai-Min Choi
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Abstract

Optical tweezers that utilize a highly focused, linearly polarized laser beam exhibit strong trap stiffness asymmetry, which originates from the anisotropic field distribution in the transverse plane. Based on the previous study of polarization-dependent focused field distribution, we explore its manifestation in optical trap in terms of trap stiffness asymmetry. Our results demonstrate that polarization control provides a versatile tuning knob for tailoring optical potential landscape even in case of a strongly modified focused field in the presence of dielectric spheres larger than the wavelength of a trap beam.

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Jinmyoung So, Jai-Min Choi. 2015-09-19. Tuning the Stiffness Asymmetry of Optical Tweezers via Polarization Control. https://doi.org/10.3938/jkps.68.762

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