All-optical spatial light modulator with megahertz modulation rates

N. T. Pelekanos, B. Deveaud, J. M. Gérard, H. Haas, U. Strauss, W. W. Rühle, J. Hebling, J. Kuhl

Research output: Article

5 Citations (Scopus)


We demonstrate a novel all-optical spatial light modulator capable of megahertz modulation rates. It is based on the quantum-confined Stark effect, but the modulating electric f ield is entirely photogenerated by strongly asymmetric photocarrier transfer in GaAs/AlAs layers. In a nonoptimized sample, cw optical excitation of approximately 50 W/cm2 created a 30-kV/cm electric f ield, inducing a 9-meV exciton red shift at room temperature. Under pulsed excitation the photogenerated electric f ield can be switched on in a few tens of picoseconds and relaxes in a few hundred nanoseconds, permitting megahertz modulation rates.

Original languageEnglish
Pages (from-to)2099-2101
Number of pages3
JournalOptics Letters
Issue number20
Publication statusPublished - okt. 15 1995


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Pelekanos, N. T., Deveaud, B., Gérard, J. M., Haas, H., Strauss, U., Rühle, W. W., Hebling, J., & Kuhl, J. (1995). All-optical spatial light modulator with megahertz modulation rates. Optics Letters, 20(20), 2099-2101.