An Ultra-High Definition Spatial Light Modulation Device Driven by Spin-Polarized Electrons

Aoshima, Ken-ichi; Funabashi, Nobuhiko; Machida, Kenji; Miyamoto, Yoshinari; Kimura, Kiyoshi; Shimidzu, Naoki; Sato, Fumio

doi:10.1109/ias.2009.5324833

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…The inverse effect can also be expected where electrons scattering in the device affect the magnetic moments in the layers by applying torques on magnetic moments and transferring angular momentum between layers. This so-called spintransfer torque (STT) is reported for different material systems [232], [233], [234], [235], [236] and its compatibility with MO devices is demonstrated [52], [74], [237], [238] . Figure 13 shows the crosssectional schematic of a single pixel in a spin-transfer-switching MOSLM.…”

Section: Spin-transfer Torque (Stt)mentioning

confidence: 99%

“…Combination of these features makes MOSLMs outstanding candidates for holographic applications and 3D displays [73], [74], [75] , augmented (AR) and virtual reality (VR) devices, LIDAR, beam steering devices for photonic projectors and other imaging applications [76][77] ,…”

Section: Introductionmentioning

confidence: 99%

“…When a current applied perpendicular to the plane of these layers passes through the pinned layer, it becomes spin polarized and when this spin-polarized current is directed to the free layer, its angular momentum can be transferred to this layer, changing its magnetization direction. Reproduced with permission [74]. 2009, IEEE.…”

mentioning

confidence: 99%

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Advanced Materials and Device Architectures for Magnetooptical Spatial Light Modulators

Kharratian

Ürey

Onbaşlı

2019

Advanced Optical Materials

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Faraday and Kerr rotations are magnetooptical (MO) effects used for rotating the polarization of light in transmission and reflection from a magnetized medium, respectively. MO effects combined with intrinsically fast magnetization reversal, which can go down to a few tens of femtoseconds or less, can be applied in magnetooptical spatial light modulators (MOSLMs) promising for nonvolatile, ultrafast, and high‐resolution spatial modulation of light. With the recent progress in low‐power switching of magnetic and MO materials, MOSLMs may lead to major breakthroughs and benefit beyond state‐of‐the‐art holography, data storage, optical communications, heads‐up displays, virtual and augmented reality devices, and solid‐state light detection and ranging (LIDAR). In this study, the recent developments in the growth, processing, and engineering of advanced materials with high MO figures of merit for practical MOSLM devices are reviewed. The challenges with MOSLM functionalities including the intrinsic weakness of MO effect and large power requirement for switching are assessed. The suggested solutions are evaluated, different driving systems are investigated, and resulting device architectures are benchmarked. Finally, the research opportunities on MOSLMs for achieving integrated, high‐contrast, and low‐power devices are presented.

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Section: Spin-transfer Torque (Stt)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Advanced Materials and Device Architectures for Magnetooptical Spatial Light Modulators

Kharratian

Ürey

Onbaşlı

2019

Advanced Optical Materials

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RGB Magnetophotonic Crystals for High-contrast Magnetooptical Spatial Light Modulators

Kharratian

Ürey

Onbaşlı

2019

Sci Rep

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Magnetooptical spatial light modulators (MOSLMs) are photonic devices that encode information in photonic waveforms by changing their amplitude and phase using magnetooptical Faraday or Kerr rotation. Despite the progress on both MO materials and switching methods, significant improvements on materials engineering and SLM design are needed for demonstrating low-power, multicolor, analog and high-contrast MOSLM devices. In this study, we present design rules and example designs for a high-contrast and large figure-of-merit MOSLM using three-color magnetophotonic crystals (MPC). We demonstrate for the first time, a three-defect MPC capable of simultaneously enhancing Faraday rotation, and high-contrast modulation at three fundamental wavelengths of red, green and blue (RGB) within the same pixel. We show using 2D finite-difference time-domain simulations that bismuth-substituted yttrium iron garnet films are promising for low-loss and high Faraday rotation MOSLM device in the visible band. Faraday rotation and loss spectra as well as figure-of-merit values are calculated for different magnetophotonic crystals of the form (H/L)p/(D/L)q/(H/L)p. After an optimization of layer thicknesses and MPC configuration, Faraday rotation values were found to be between 20–55° for losses below 20 dB in an overall thickness less than 1.5 µm including three submicron garnet defect layers. The experimental demonstration of our proposed 3-color MOSLM devices can enable bistable photonic projectors, holographic displays, indoor visible light communication devices, photonic beamforming for 5 G telecommunications and beyond.

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

Aoshima

Funabashi

Machida

et al. 2010

J. Display Technol.

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An Ultra-High Definition Spatial Light Modulation Device Driven by Spin-Polarized Electrons

Cited by 3 publications

References 13 publications

Advanced Materials and Device Architectures for Magnetooptical Spatial Light Modulators

Advanced Materials and Device Architectures for Magnetooptical Spatial Light Modulators

RGB Magnetophotonic Crystals for High-contrast Magnetooptical Spatial Light Modulators

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

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