Collinear holography with magneto-optic spatial light modulator

Imura, T.; Koga, Hironobu; Lim, Pang Boey; Umezawa, Hamao; Horimai, Hideyoshi; Inoue, M.

doi:10.1117/12.680269

Cited by 5 publications

(3 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, MOSLM is a robust solid-state device without mechanically moving parts, that functions also as a memory element due to the remanent magnetization and nonzero coercivity 11,12 . These features make MOSLMs useful for various applications such as optical circulators and isolators 13 , photonic projectors 14 , optical beamforming for visible light communication devices 15 , beam steering devices for various imaging and display technologies 16 , and more importantly holographic applications and 3D displays where high spatial resolution and short response time are crucial 17–19 . Previous demonstrations of SLMs other than MOSLMs include liquid crystal-based devices (LCD and LCOS) and digital micro-mirror devices (DMDs) with pixel sizes about 5 and 10 µm and response times in the order of 100 and 10 µs, respectively 20 .…”

Section: Introductionmentioning

confidence: 99%

RGB Magnetophotonic Crystals for High-contrast Magnetooptical Spatial Light Modulators

Kharratian

Ürey

Onbaşlı

2019

Sci Rep

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%

RGB Magnetophotonic Crystals for High-contrast Magnetooptical Spatial Light Modulators

Kharratian

Ürey

Onbaşlı

2019

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Dynamic control of magnetization switching by current or voltage turns MOSLMs into integrated active devices. Combination of these features makes MOSLMs outstanding candidates for holographic applications and 3D displays, augmented (AR) and virtual reality (VR) devices, LIDAR, beam steering devices for photonic projectors and other imaging applications, optical isolators and circulators, and visible light communication…”

Section: Introductionmentioning

confidence: 99%

Advanced Materials and Device Architectures for Magnetooptical Spatial Light Modulators

Kharratian

Ürey

Onbaşlı

2019

Advanced Optical Materials

View full text Add to dashboard Cite

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.

show abstract

“…Compared with the transmission type, the reflection-type spatial light modulator is a new device with high resolution, contrast, pixel opening rate, and energy utilization efficiency. [19][20][21][22][23] The optical structure of silicon-based spatial light modulator contains a Fabry-Perot (FP) cavity, Mach-Zehnder interferometer, Bragg optical grating, and micro-ring resonant cavity. [24][25][26][27][28][29][30][31] The silicon-based spatial light modulators can be fabricated through a mature microelectronic fabrication technology called complementary metal-oxide-semiconductor process which has low cost, high integration, and high processing precision.…”

Section: Introductionmentioning

confidence: 99%

Low insertion loss silicon-based spatial light modulator with high reflective materials outside Fabry–Perot cavity*

Tian¹,

Kuang²,

Zhang³

et al. 2019

Chinese Phys. B

View full text Add to dashboard Cite

The extinction ratio and insertion loss of spatial light modulator are subject to the material problem, thus limiting its applications. One reflection-type silicon-based spatial light modulator with high reflective materials outside the Fabry–Perot cavity is demonstrated in this paper. The reflectivity values of the outside-cavity materials with different film layer numbers are simulated. The reflectivity values of 6-pair Ta2O5/SiO2 films at 1550 nm are experimentally verified to be as high as 99.9%. The surfaces of 6-pair Ta2O5/SiO2 films are smooth: their root-mean-square roughness values are as small as 0.53 nm. The insertion loss of the device at 1550 nm is only 1.2 dB. The high extinction ratio of the device at 1550 nm and 11 V is achieved to be 29.7 dB. The spatial light modulator has a high extinction ratio and low insertion loss for applications.

show abstract

Collinear holography with magneto-optic spatial light modulator

Cited by 5 publications

References 4 publications

RGB Magnetophotonic Crystals for High-contrast Magnetooptical Spatial Light Modulators

RGB Magnetophotonic Crystals for High-contrast Magnetooptical Spatial Light Modulators

Advanced Materials and Device Architectures for Magnetooptical Spatial Light Modulators

Low insertion loss silicon-based spatial light modulator with high reflective materials outside Fabry–Perot cavity*

Contact Info

Product

Resources

About