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Large-scale uniform optical focus array generation with a phase spatial light modulator

Author(s)
Kim, Donggyu; Englund, Dirk R.
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Abstract
We report a new method to generate uniform large-scale optical focus arrays (LOFAs). By identifying and removing undesired phase rotation in the iterative Fourier transform algorithm (IFTA), our approach rapidly produces computer-generated holograms of highly uniform LOFAs. The new algorithm also shows a faster compensation of system-induced LOFA intensity inhomogeneity than the conventional IFTA. After only three adaptive correction steps, we demonstrate LOFAs consisting of O103 optical foci with an intensity uniformity greater than 98%.
Date issued
2019-06
URI
https://hdl.handle.net/1721.1/129623
Department
Massachusetts Institute of Technology. Department of Mechanical Engineering; Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Journal
Optics Letters
Publisher
The Optical Society
Citation
Kim, Donggyu et al. “Large-scale uniform optical focus array generation with a phase spatial light modulator.” Optics Letters, 44, 12 (June 2019): 2947-3185 © 2019 The Author(s)
Version: Original manuscript
ISSN
0146-9592

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