LCoS display phase self-calibration method based on diffractive lens schemes

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Title: LCoS display phase self-calibration method based on diffractive lens schemes
Authors: Zhang, Haolin | Lizana Tutusaus, Ángel | Iemmi, Claudio | Monroy-Ramírez, Freddy A. | Márquez, Andrés | Moreno Soriano, Ignacio | Campos Coloma, Juan
Research Group/s: Holografía y Procesado Óptico
Center, Department or Service: Universitat Autònoma de Barcelona. Departamento de Física | Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física | Universidad Nacional de Colombia. Departamento de Física | Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal | Universidad Miguel Hernández de Elche. Departamento de Ciencia de Materiales, Óptica y Tecnología Electrónica,
Keywords: Calibration | Liquid crystals | Optical metrology | Phase shifting interferometry | Surface measurement
Knowledge Area: Óptica | Física Aplicada
Issue Date: Jul-2018
Publisher: Elsevier
Citation: Optics and Lasers in Engineering. 2018, 106: 147–154. doi:10.1016/j.optlaseng.2018.02.019
Abstract: An experimental method to calibrate Liquid Crystal on Silicon (LCoS) displays by self-generating lens configurations on the studied device is proposed in this paper. On the one hand, a split-lens is displayed in the LCoS to self-generate an interference pattern from which the phase-voltage curve of the modulator is calculated. On the other hand, a microlens array is displayed on the LCoS, within a same experimental set-up, to implement a Shack-Hartmann (S-H) wavefront sensor, from which the display surface profile is retrieved. Specifically, by means of a feasible set-up, the proposed method allows measuring the deviation from flatness of the LCoS displays as well as to determine the phase-voltage response of phase-only SLMs. Experimental results demonstrate a linear tendency phase-voltage curve that ranges from 0 rad up to ∼6.28 rad, for the used light wavelength. Moreover, by extracting the LCoS phase distribution measured with the S-H configuration, the LCoS surface inhomogeneity is corrected by 95%.
Sponsor: H. Zhang acknowledges the financial support of the Chinese Scholarship Council (CSC) (No. 201504910783). H. Zhang, A. Lizana and J. Campos acknowledge the financial support of Spanish MINECO (FIS2015-66328-C3-1-R and fondos FEDER); Catalan Government (SGR 2014-1639). C. Iemmi acknowledges the financial support of UBACyT20020130100727BA, CONICET PIP 11220150100475CO, and ANPCYT PICT 2014/2432.
ISSN: 0143-8166 (Print) | 1873-0302 (Online)
DOI: 10.1016/j.optlaseng.2018.02.019
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2018 Elsevier Ltd.
Peer Review: si
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