Holographic optical tweezers are a powerful optical trapping and manipulation tool in numerous applications such as life science and colloidal physics. However, imperfections in the spatial light modulator and optical components of the system will introduce detrimental aberrations to the system, thereby degrading the trapping performance significantly. To address this issue, we develop an aberration correction technique by using a high-order vortex as the correction metric. The optimal Zernike polynomial coefficients for quantifying the system aberrations are determined by comparing the distorted vortex and the ideal one. Efficiency of the proposed method is demonstrated by comparing the optical trap intensity distribution, trap stiffness, and particle dynamics in a Gaussian trap and an optical vortex trap, before and after aberration corrections.
© 2018 Optical Society of AmericaFull Article | PDF Article
14 May 2018: A correction was made to the author affiliations.
OSA Recommended Articles
Kurt D. Wulff, Daniel G. Cole, Robert L. Clark, Roberto DiLeonardo, Jonathan Leach, Jon Cooper, Graham Gibson, and Miles J. Padgett
Opt. Express 14(9) 4169-4174 (2006)
Carol López-Quesada, Jordi Andilla, and Estela Martín-Badosa
Appl. Opt. 48(6) 1084-1090 (2009)
Mingzhou Chen, Michael Mazilu, Yoshihiko Arita, Ewan M. Wright, and Kishan Dholakia
Opt. Lett. 38(22) 4919-4922 (2013)