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Proceedings Paper

Deformation Behavior Of Thin Viscoelastic Layers Used In An Active-Matrix-Addressed Spatial Light Modulator
Author(s): W. Brinker; R. Gerhard-Multhaupt; W.-D. Molzow; R. Tepe
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Paper Abstract

Thin viscoelastic layers with active-matrix addressing are proposed as high-resolution spatial light modulators (SLM's) for eventual use in a reflective schlieren light valve. Light modulation is achieved by diffraction from the periodically deformed mirror electrode covering the SLM layer. A two-dimensional array of Si-MOS transistors will be employed for addressing the viscoelastic SLM. Orthogonal and diagonally offset arrangements of pixels with two grating periods each are suggested for this active matrix. For measuring the deformation behavior of viscoelastic layers with a reflective top electrode, a standard microscope interferometer was modified so that the phase-shift technique could be employed. The deformation profile is recorded by means of a CCD image sensor, while the temporal development of the deformation is detected with a photomultiplier tube. Qualitatively, the experimental results agree with previously obtained predictions from an extensive theoretical analysis of the SLM's time behavior and spatial-frequency response.

Paper Details

Date Published: 31 January 1989
PDF: 7 pages
Proc. SPIE 1018, Electro-Optic and Magneto-Optic Materials, (31 January 1989); doi: 10.1117/12.950001
Show Author Affiliations
W. Brinker, Heinrich-Hertz-Institut fuer Nachrichtentechnik Berlin GmbH (Federal Republic of Germany)
R. Gerhard-Multhaupt, Heinrich-Hertz-Institut fuer Nachrichtentechnik Berlin GmbH (Federal Republic of Germany)
W.-D. Molzow, Heinrich-Hertz-Institut fuer Nachrichtentechnik Berlin GmbH (Federal Republic of Germany)
R. Tepe, Heinrich-Hertz-Institut fuer Nachrichtentechnik Berlin GmbH (Federal Republic of Germany)


Published in SPIE Proceedings Vol. 1018:
Electro-Optic and Magneto-Optic Materials
Jean-Pierre Huignard, Editor(s)

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