Full field phase imaging using a harmonically matched diffraction grating pair based homodyne quadrature interferometer [PDF]
, 2007 In this letter, the authors present a novel quadrature interferometry method based on the use of a harmonically matched shallow grating pair. Unlike a simple beam splitter or single shallow grating, the grating pair can confer a nontrivial interference ...
Cui, Xiquan +5 more
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A Microlens Array Grating for Miniature Multi-Channel Spectrometers
Sensors, 2023 Most existing multi-channel spectrometers are constructed by physically stacking single-channel spectrometers, resulting in their large size, high weight, and limited number of channels. Therefore, their miniaturization is urgently needed. In this paper,
Shuonan Shan +5 more
doaj +1 more source
Optical Engineering: The Journal of SPIE, 2019 . With the wide-spread availability of rigorous electromagnetic (vector) analysis codes for describing the diffraction of electromagnetic waves by specific periodic grating structures, the insight and understanding of nonparaxial parametric diffraction ...
J. Harvey, R. Pfisterer
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Investigation of diffractive grating creation in glass by using femtosecond laser pulses [PDF]
مجله علوم و فنون هستهای, 2019 In this paper, the interaction of femtosecond laser pulses with BK7 glass is investigated. A Ti:sapphire femtosecond laser with the chirped pulse amplification is used.
R Goodarzi, F Hajiesmaeilbaigi
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Compact focusing grating couplers for silicon-on-insulator integrated circuits [PDF]
, 2007 —We report experimental results on compact and broadband focusing grating couplers, both in silicon-on-insulator (SOI) and gold on SOI. An eight-fold length reduction of the coupling structure from fiber to photonic wire in SOI, as com-pared to a linear ...
Dirk Taillaert +10 more
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A fully reconfigurable waveguide Bragg grating for programmable photonic signal processing
Optical Fiber Communications Conference and Exhibition, 2018 Since the discovery of the Bragg’s law in 1913, Bragg gratings have become important optical devices and have been extensively used in various systems. In particular, the successful inscription of a Bragg grating in a fiber core has significantly boosted
Weifeng Zhang, Jianping Yao
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Fabrication of X-ray Gratings for Interferometric Imaging by Conformal Seedless Gold Electroplating
Micromachines, 2021 We present a method to produce small pitch gratings for X-ray interferometric imaging applications, allowing the phase sensitivity to be increased and/or the length of the laboratory setup to be minimized.
Konstantins Jefimovs +7 more
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High-efficiency grating-couplers: demonstration of a new design strategy
Scientific Reports, 2017 We present a simple and practical strategy that allows to design high-efficiency grating couplers. The technique is based on the simultaneous apodization of two structural parameters: the grating period and the fill-factor, along with the optimization of
R. Marchetti +8 more
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Dataset for SERS Plasmonic Array: Width, Spacing, and Thin Film Oxide Thickness Optimization
Data, 2018 Surface-enhanced Raman spectroscopy (SERS) improves the scope and power of Raman spectroscopy by taking advantage of plasmonic nanostructures, which have the potential to enhance Raman signal strength by several orders of magnitude, which can allow for ...
Christopher M. Klenke +5 more
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Higher-harmonic adaptation and the detection of squarewave gratings [PDF]
, 1987 Adaptation to a high contrast sinewave grating of 1 c/deg spatial frequency causes a large increase in the contrast threshold for a 1 c/deg test grating, but fails to raise the threshold for a squarewave grating of 0.33 c/deg, although the sensitivity of
Greenlee, Mark W., Magnussen, S.
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