Premium
Measuring the Relationship between Grayscale and Phase Retardation of LCoS based on Binary Optics
Author(s) -
Yang Shiyi,
Yang H.,
Qin Lang,
Shi Yujian,
Li Qing
Publication year - 2020
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.13773
Subject(s) - optics , binary number , grayscale , diffraction , phase (matter) , gaussian , diffraction grating , computer science , grating , materials science , physics , pixel , mathematics , arithmetic , quantum mechanics
A method for measuring LCoS phase retardation based on binary optics is introduced. Based on the diffraction efficiency formula of the binary grating, the relationship between grayscale and phase retardation is established. The method of designing experimental light path and testing with the aid of diaphragm is proposed, which is simple, intuitive, and insensitive to environmental perturbations. Finally, the feasibility of the method is verified based on the distribution of diffraction light spot. In addition, a method for detecting the specific position of the Gaussian light spot on the LCoS is also proposed, and the effectiveness of it is verified from experimental phenomena to theoretical derivation.