An improved design for optically addressed multiple-quantum-well spatial light modulators is reported. These integrated AlGaAs modulators are of high optical quality and are simple to fabricate. They exhibit excellent performance characteristics such as 10:1 reflection contrast ratio, 1.5% diffraction efficiency, 7-μm spatial resolution, and illumination sensitivity less than 1 μJ/cm2. Additionally, a new mode of operation is reported that dramatically improves the optical response of these devices at low frequencies. A new physical model is proposed that accurately describes the modulation process.
© 1998 Optical Society of America
[Optical Society of America ]
(090.2900) Holography : Optical storage materials
(230.2090) Optical devices : Electro-optical devices
(230.5590) Optical devices : Quantum-well, -wire and -dot devices
(230.6120) Optical devices : Spatial light modulators
S. R. Bowman, W. S. Rabinovich, G. Beadie, S. M. Kirkpatrick, D. S. Katzer, K. Ikossi-Anastasiou, and C. L. Adler, "Characterization of high performance integrated optically addressed spatial light modulators," J. Opt. Soc. Am. B 15, 640-647 (1998)