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The Grating Interferometer [PDF]

Physical Review (Series I), 1910
n ...
Carl Barus, M. Barus
openalex   +4 more sources

Interferences with Two Gratings [PDF]

Science, 1915
n ...
Carl Barus
openalex   +5 more sources

Technology Maturation Efforts for the Next Generation of Grating Spectrometer Hyperspectral Infrared Sounders

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
As we look forward to the next generation of hyperspectral infrared (IR) atmospheric sounders, grating spectrometers hold promise for improved performance (e.g., horizontal and spectral resolutions) and more rapid revisit while reducing the size and ...
Thomas S. Pagano, Dean L. Johnson, James P. McGuire, Mark A. Schwochert, David Z. Ting   +4 more
doaj   +1 more source

High Performance Dual-Core D-Shaped PCF Refractive Index Sensor Coated with Gold Grating

Photonics, 2023
In this study, a dual−core D-shaped photonic crystal fiber (PCF) surface plasmon resonance sensor coated with gold grating is designed and analyzed using the finite-element method (FEM).
Yu Ying, You Xia, Siyu Cheng, Dan Shan, Zhijun Gao, Guangyuan Si, Xiaoxi Tian   +6 more
doaj   +1 more source

Large bandwidth, highly efficient optical gratings through high index materials [PDF]

, 2008
We analyze the diffraction characteristics of dielectric gratings that feature a high index grating layer, and devise, through rigorous numerical calculations, large bandwidth, highly efficient, high dispersion dielectric gratings in reflection ...
Baldry, Clausnitzer, Clausnitzer, Clausnitzer, Ebizuka, Gibson, H. L. Offerhaus, Helmut Rathgen, Kogelnik, Limpert, Liu, Marciante, Moharam, Nguyen, Nishii, Néauport, Rhee, Tamura   +17 more
core   +9 more sources

A High Precision Time Grating Displacement Sensor Based on Temporal and Spatial Modulation of Light-Field

Sensors, 2020
A new displacement sensor with light-field modulation, named as time grating, was proposed in this study. The purpose of this study was to reduce the reliance on high-precision measurements on high-precision manufacturing.
Min Fu, Changli Li, Ge Zhu, Hailin Shi, Fan Chen   +4 more
doaj   +1 more source

Surface Texture Measurement on Complex Geometry Using Dual-Scan Positioning Strategy

Applied Sciences, 2020
In this paper, a surface measurement method based on dual-scan positioning strategy is presented to address the challenges of irregular surface patterns and complex geometries. A confocal sensor with an internal scanning mechanism was used in this study.
Fang Cheng, Shaowei Fu, Ziran Chen
doaj   +1 more source

Dirac gratings

Optics Express, 2023
We propose the concept of a Dirac grating, where periodic permittivity perturbations approach a train of Dirac functions. We show that Dirac gratings can yield identical spectral characteristics for higher-order gratings compared to first-order gratings of the same length. Using an inverse Fourier transform technique, we design different types of Dirac
Saeidi, Shayan, Cheben, Pavel, Schmid, Jens H., Berini, Pierre   +3 more
openaire   +2 more sources

Measurement of Wafer Focus by Grating Shearing Interferometry

Applied Sciences, 2020
A method applied for improving the measurement precision and efficiency of wafer focusing in an optical lithography instrument (OLI) is introduced. Based on grating shearing interferometry, the defocus and tilt of the wafer are measured by testing the ...
Jian Wang, Song Hu, Xianchang Zhu
doaj   +1 more source

Dual Tunable Electromagnetically Induced Transparency Based on a Grating-Assisted Double-Layer Graphene Hybrid Structure at Terahertz Frequencies

Nanomaterials, 2022
We propose a graphene plasmonic structure by applying two graphene layers mingled with a thin gold layer in a silicon grating. By utilizing the finite-difference time-domain (FDTD) method, we investigate the optical response of the system, and observe ...
Xu Zhong, Tiesheng Wu, Zhihui Liu, Dan Yang, Zuning Yang, Rui Liu, Yan Liu, Junyi Wang   +7 more
doaj   +1 more source