Performance Enhancement of a Joint Transform Correlator Using the Directionality211 of a Spatial Light Modulator

摘要

We have observed that conventional electrically addressable spatial light211u001emodulators have diferent transfer functions along the fast (horizontal) and the 211u001eslow (vertical) directions. We then propose to use the directionality of a 211u001espatial light modulator to increase the performance of a joint transform 211u001ecorrelator. Our experimental results show that input space-bandwidth product of a 211u001ejoint transform correlator can be significantly increased by recording a hologram 211u001eso that interference fringes run along the fast (horizontal) direction of a 211u001espatial light modulator.