Subtraction digital holography.
Overlapping of the desired (first-order) and undesired (zero-order) terms originating from the recorded primary-fringe patterns in digital holography is a problem without a real-time solution. We propose a procedure for suppressing the zero-order disturbance that is realizable in real time. The procedure is based on the stochastic change of the speckles in the primary-fringe patterns and on the subtraction of two such subsequent patterns. The theoretical description of the procedure is given and experimental results presented.
Demoli
Nazif
N
Institute of Physics, Bijenicka c. 46, PO Box 304, 10001 Zagreb, Croatia.
Mestrović
Jurica
J
Sović
Ivica
I