Abstract
In phase-shifting digital holographic microscopy (PS-DHM), the reconstructed phase map is obtained after processing several holograms of the same scene with a phase shift between them. Most of the reconstruction algorithms in PS-DHM require an accurate and known phase shift between the recorded holograms. This requirement limits the applicability of the method. To ease the use of PS-DHM, this paper presents an iterative-blind phase shift extraction method based on demodulation of the different components of the recorded holograms. The method uses a DHM system operating in a slightly off-axis architecture. The proposed method uses three-frame holograms with arbitrary and unequal phase shifts between them and therefore eases the use of the PS-DHM. We believe both simulated and experimental results demonstrate the goodness and feasibility of the proposed technique.
© 2019 Optical Society of America
Full Article | PDF ArticleMore Like This
Raul Castañeda, Carlos Buitrago-Duque, Jorge Garcia-Sucerquia, and Ana Doblas
Appl. Opt. 59(24) 7469-7476 (2020)
Raul Castaneda and Ana Doblas
Appl. Opt. 60(32) 10214-10220 (2021)
J. A. Picazo-Bueno, M. Trusiak, and V. Micó
Opt. Express 27(4) 5655-5669 (2019)