A real-time binary-amplitude phase-only filter (BAPOF) implemented in available phase-only modulators is presented. The BAPOF has an amplitude transmission equal to one only in a region of support, while the transmission is equal to zero in the complementary region. To implement zero transmission in a phase-only modulator we propose to add a linear phase to the region of support. In this way the correlation desired is obtained off axis. Computer simulations and experimental results obtained with this technique are given.
© 1997 Optical Society of America
[Optical Society of America ]
Ignacio Moreno, Esmail Ahouzi, Juan Campos, and María J. Yzuel, "Real-time binary-amplitude phase-only filters," Appl. Opt. 36, 7428-7432 (1997)