The minimum Euclidean distance principle applied for the analysis of the phase fluctuation in spatial light modulators

A. LIZANA; A. MÁRQUEZ; L. LOBATO; Y. RODANGE; I.MORENO; CLAUDIO IEMMI; J. CAMPOS

OPTICS EXPRESS

OPTICAL SOC AMER

Lugar: Washington; Año: 2010 vol. 18 p. 10581 - 10593

1094-4087

Digital addressing of the electrical signal in spatial light modulators, as it is the case in present liquid crystal on silicon (LCoS) displays, may lead to temporal phase fluctuations in the optical beam. In diffractive optics applications a reduction in the modulation diffraction efficiency may be expected. Experimental work is done characterizing the fluctuations amplitude and phase depth for three different digital addressing sequences. We propose a diffractive model to evaluate the modulation diffraction efficiency of phase diffractive optical elements (DOEs) in the presence of phase fluctuations. Best results are obtained for the most stable electrical sequence even though its phase depth is as small as 280°. The results show good agreement with the numerical calculation given by the model.