Submicron Magneto-Optical Spatial Light Modulation Device for Holographic Displays Driven by Spin-Polarized Electrons

We have proposed a spin transfer switching (STS MO-SLM) device, based on Magneto-optical (MO) spatial light-modulation and driven by spin-polarized current flow, and confirmed its basic operation and characteristics experimentally. The proposed SLM device can be operated without active-matrix device...

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Bibliographic Details
Published in:Journal of display technology 2010-09, Vol.6 (9), p.374-380
Main Authors: Aoshima, K, Funabashi, N, Machida, K, Miyamoto, Y, Kuga, K, Ishibashi, T, Shimidzu, N, Sato, F
Format: Article
Language:English
Subjects:
Active matrix technology
Devices
Displays
Electrons
Holography
Light modulation
Magnetic modulators
Magnetic switching
Magnetooptic devices
Molybdenum
Moving images
Nanocomposites
Nanomaterials
Nanostructure
Optical modulation
Sociotechnical systems
Spatial light modulator (SLM)
Spatial resolution
spin transfer switching (STS)
Three dimensional
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Summary:We have proposed a spin transfer switching (STS MO-SLM) device, based on Magneto-optical (MO) spatial light-modulation and driven by spin-polarized current flow, and confirmed its basic operation and characteristics experimentally. The proposed SLM device can be operated without active-matrix devices, has a spatial resolution as small as several hundred nanometers and possesses the potential for being driven at ultra-high speed of several tens of nanoseconds. Unlike existing SLM devices, this device satisfies both the size and speed requirements of SLMs for use in displaying holographic three-dimensional (3D) moving images. To improve the light modulation characteristics of SLM device, we carried out studies on magnetic films with perpendicular magnetic anisotropy to obtain large magneto-optical signals, which enabled us to realize enhanced light modulation performance. In addition, we measured a MO signal that was about twenty-times larger than that possible with in-plane anisotropy. We conclude that the MO-SLM device that we are developing is suitable for displaying future super-high definition, holographic three-dimensional moving images.
ISSN:1551-319X
1558-9323
DOI:10.1109/JDT.2010.2058998