Compressive holography with a single-pixel detector.
This Letter develops a framework for digital holography at optical wavelengths by merging phase-shifting interferometry with single-pixel optical imaging based on compressive sensing. The field diffracted by an input object is sampled by Hadamard patterns with a liquid crystal spatial light modulator. The concept of a single-pixel camera is then adapted to perform interferometric imaging of the sampled diffraction pattern by using a Mach-Zehnder interferometer. Phase-shifting techniques together with the application of a backward light propagation algorithm allow the complex amplitude of the object under scrutiny to be resolved. A proof-of-concept experiment evaluating the phase distribution of an ophthalmic lens with compressive phase-shifting holography is provided.
GROC UJI, Institut de Noves Tecnologies de la Imatge, Universitat Jaume I, Castelló, Spain.
Pere
P
Clemente
Vicente
V
Durán
Enrique
E
Tajahuerce
Pedro
P
Andrés
Vicent
V
Climent
Jesús
J
Lancis