Abstract

We are developing a surface-normal light modulator structure that has the potential to achieve low voltage (<5V) and high frequency operation (>few hundred MHz) operation with good contrast ratio (>20:1) and spatially uniform response over a large area (~1”x1”). The technique is based upon Fabry-Perot structures using electro-optic phase modulation materials. Conventional modulators of this type are well known for their sensitivity to optical path differences (resulting from, e.g., cavity thickness variations, cavity index variations, or uncollimated optical beams). Our approach is to replace the input mirror with an in-situ recorded holographic mirror, resulting in what we call a Self-Tuned Fabry Perot (STFP) modulator. We have previously demonstrated the STFP concept with a large (2.5mm x 2.5mm) single element modulator and collimated light. Here we present out latest experimental results of a 9x9 modulator array which uses a focusing lenslet array.

© 1997 Optical Society of America