Electronic holographic three-dimensional display with enlarged viewing angle using non-mechanical scanning technology

Yang, Gen; Han, Weihao; Xie, Taomin; Xie, Haiyan

doi:10.1364/osac.2.001917

Cited by 9 publications

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A faster charge-coupled device (CCD) and big data technology are needed to record the process. The current time resolution of TEM equipped with CCD can reach a picosecond level [164,165] . Faster CCD could improve TEM time resolution during the characterization of the switching process [166−168] .…”

Section: Discussionmentioning

confidence: 99%

A revew of in situ transmission electron microscopy study on the switching mechanism and packaging reliability in non-volatile memory

et al. 2021

View full text Add to dashboard Cite

Non-volatile memory (NVM) devices with non-volatility and low power consumption properties are important in the data storage field. The switching mechanism and packaging reliability issues in NVMs are of great research interest. The switching process in NVM devices accompanied by the evolution of microstructure and composition is fast and subtle. Transmission electron microscopy (TEM) with high spatial resolution and versatile external fields is widely used in analyzing the evolution of morphology, structures and chemical compositions at atomic scale. The various external stimuli, such as thermal, electrical, mechanical, optical and magnetic fields, provide a platform to probe and engineer NVM devices inside TEM in real-time. Such advanced technologies make it possible for an in situ and interactive manipulation of NVM devices without sacrificing the resolution. This technology facilitates the exploration of the intrinsic structure-switching mechanism of NVMs and the reliability issues in the memory package. In this review, the evolution of the functional layers in NVM devices characterized by the advanced in situ TEM technology is introduced, with intermetallic compounds forming and degradation process investigated. The principles and challenges of TEM technology on NVM device study are also discussed.

show abstract

Section: Discussionmentioning

confidence: 99%

A revew of in situ transmission electron microscopy study on the switching mechanism and packaging reliability in non-volatile memory

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Their ability to control the light can be used in many different applications including optical wireless communication system 5 – 8 , plasmonic biosensors 9 , sub-wavelength imaging instruments 10 – 12 , and also light trapping in solar cells 13 , 14 . Dynamic control of the radiation pattern of nano-antennas, called the beam steering capability, can provide more flexibility in before mentioned applications specially when using them for authentication 15 , optical communication 6 , holography 16 , imaging 17 and LIDARs 18 , 19 .…”

Section: Introductionmentioning

confidence: 99%

Integrated optical beam steering device using switchable nanoantennas and a reflective metalens

Ghaffari

Yousefi

2023

Sci Rep

View full text Add to dashboard Cite

In this paper, an integrated optical device is proposed in which a reflective meta-lens and five switchable nano-antennas are combined to provide optical beam steering at the standard telecommunication wavelength of 1550 nm. For this purpose, a graphene-based switchable power divider is designed and integrated with nano-antennas to control the flow of the light entering the device. To achieve a higher angular accuracy in the radiated beams, a new algorithm is proposed and utilized to optimize the location of feeding nano-antennas in accordance with the reflective meta-lens. In order to achieve a minimum fluctuation in the light intensity when the beams are rotated in the space, an algorithm is developed to select optimum unit cells for the engineered meta-lens. The whole device is numerically analyzed using Electromagnetic full-wave simulations illustrating an optical beam steering with high accuracy (better than 1 degree) in the beam direction, and a low variation (less than 1 dB) in the radiated light intensity. The proposed integrated device can be used for many applications such as inter- and intra-chip optical interconnects, optical wireless communication systems, and advanced integrated LIDARs.

show abstract

“…UE to the rapid development of photonic integrated circuits (PICs), on-chip optical phased arrays (OPAs) have attracted much attention for their rapid and precise beam steering without mechanical actuators. OPAs have seen extensive applications in light detection and ranging (LiDAR) [1,2], imaging [3,4], holographic displays [5], and free-space communications [6]. Particularly, integrated silicon photonics platform which is compatible with CMOS fabrication processes enables large-scale chip-based OPAs with significantly low loss and reduced cost [7].…”

Section: Introductionmentioning

confidence: 99%

Design of a Low-Crosstalk Sub-Wavelength-Pitch Silicon Waveguide Array for Optical Phased Array

Zhou

et al. 2021

IEEE Photonics J.

View full text Add to dashboard Cite

In this work, a compact sub-wavelength-pitch silicon waveguide array with low crosstalk is proposed and analyzed. The crosstalk is suppressed by periodic silicon nano-blocks symmetrically arranged along the silicon strip waveguides. The silicon nano-blocks are properly designed to work in the resonant region as a high-reflection boundary so that the evanescent fields of the silicon waveguide, which directly contribute to the coupling between waveguides, can be truncated. Meanwhile, the nanoblocks periodically perturb the evanescent fields to form a weakradiating grating, leading to a millimeter-long effective radiation length required for highly directive optical phased arrays. Simulation results show that the crosstalk between the waveguides in the proposed design is at least 10 dB lower than traditional waveguide array with identical sizes within the 1500 ~ 1590 nm bandwidth. Furthermore, the proposed design achieves an effective radiation length up to 1.47 mm, resulting in a theoretical narrow beam width of 0.052°. Combining both the low crosstalk and the long effective radiating length, our design offers a promising platform for high-performance two-dimensional scanning optical phased array with a large field of view and a narrow beam width.

show abstract

Electronic holographic three-dimensional display with enlarged viewing angle using non-mechanical scanning technology

Cited by 9 publications

References 15 publications

A revew of in situ transmission electron microscopy study on the switching mechanism and packaging reliability in non-volatile memory

A revew of in situ transmission electron microscopy study on the switching mechanism and packaging reliability in non-volatile memory

Integrated optical beam steering device using switchable nanoantennas and a reflective metalens

Design of a Low-Crosstalk Sub-Wavelength-Pitch Silicon Waveguide Array for Optical Phased Array

Contact Info

Product

Resources

About