Computational Three-Dimensional Imaging System via Diffraction Grating Imaging with Multiple Wavelengths [PDF]
Sensors, 2021 This paper describes a computational 3-D imaging system based on diffraction grating imaging with laser sources of multiple wavelengths. It was proven that a diffraction grating imaging system works well as a 3-D imaging system in our previous studies ...
Jae-Young Jang, Hoon Yoo
doaj +2 more sources
Image Enhancement of Computational Reconstruction in Diffraction Grating Imaging Using Multiple Parallax Image Arrays [PDF]
Sensors, 2020 This paper describes an image enhancement method of computational reconstruction for 3-D images with multiple parallax image arrays in diffraction grating imaging. A 3-D imaging system via a diffraction grating provides a parallax image array (PIA) which
Jae-Young Jang, Hoon Yoo
doaj +2 more sources
Electromagnetic wave diffraction on a “strip grating – ferromagnetic half-space” composite structure: surface-wave resonances [PDF]
Радиофизика и электроника, 2020 Subject and Purpose. A theoretic study is given to the diffraction of a monochromatic plane E-polarized electromagnetic wave on a composite structure like a periodic strip grating bordering a half-space filled with a lossy homogeneous gyrotropic ...
A.V. Brovenko +3 more
doaj +2 more sources
Dual coherent light array model for reflective rectangular metallic grating [PDF]
Proceedings of the Estonian Academy of Sciences, 2020 To study the mechanism of periodic change of reflective rectangular metallic gratingsâ diffraction efficiencies, a dual secondary coherent light source array model was established based on the theory of Fabry-Pérot resonator.
Xiangnan Qiao, Jinkui Chu, Ran Zhang
doaj +1 more source
Effect of Grating Ruling Machine System Errors on Grating Spectral Performance
Applied Sciences, 2022 Grating groove functions scalar theory can describe the light source through the grating interference and diffraction effect of the physical phenomenon of splitting light.
Chao Yang, Xu Chen
doaj +1 more source
Analytic Design of Segmented Phase Grating for Optical Sensing in High-Precision Alignment System
Sensors, 2021 Ultra-precision measurement systems are important for semiconductor manufacturing processes. In a phase grating sensing alignment (PGA) system, the measurement accuracy largely depends on the intensity of the diffraction signal and its signal-to-noise ...
Guanghua Yang +4 more
doaj +1 more source
Optimal Design and Analysis of 4.7 μm Hybrid Deep Dielectric High Efficiency Transmission Gratings
Micromachines, 2022 There is currently no transmission grating with good diffraction efficiency in the 4.7 μm band. Metal gratings at this wavelength are all reflective gratings which has a diffraction efficiency of lower than 90% and lower laser damage threshold.
Ye Wang +6 more
doaj +1 more source
The realisation of an electro-Optical Diffraction Grating using HeNe laser
Tikrit Journal of Pure Science, 2020 This paper reports far-field of the electro-optical diffraction grating to the advantage of electro-optic response of 5CB liquid crystal. The diffraction grating was produced by intersacting of two laser beam of laser HeNe 632.8nm wavelength radiation ...
Abdulsattar A. Aesa, C.D. Walton
doaj +1 more source
Ultra-Precision Cutting and Characterization of Reflective Convex Spherical Blazed Grating Elements
Micromachines, 2022 In this work, based on the diffraction principle of reflective blazed grating, the structure size of the convex spherical blazed grating unit is determined, the machining accuracy of the convex spherical blazed grating is formulated, the effects of tool ...
Huang Li +3 more
doaj +1 more source
Design and Fabrication of Silicon-Blazed Gratings for Near-Infrared Scanning Grating Micromirror
Micromachines, 2022 Blazed gratings are the critical dispersion elements in spectral analysis instruments, whose performance depends on structural parameters and topography of the grating groove.
Sinong Zha +4 more
doaj +1 more source