Results 21 to 30 of about 22,226 (293)

Generation of diffraction-free petallike beams based on stationary phase principle

Results in Physics, 2022
Lately, a kind of so-called “combined half-integer Bessel-like beams,” in which their subfamilies include radial carpet, petallike, and ringlike vortex beams, has been generated using a radial periodic grating.
Ning Gong, Fuyang Xu, Jingyu Yang, Yile Shi, Yixian Qian, Zhijun Ren   +5 more
doaj   +1 more source

Angular alignment and fidelity of neutron phase-gratings for improved interferometer fringe visibility

AIP Advances, 2019
The recent development of phase-grating moiré neutron interferometry promises a wide range of impactful experiments from dark-field imaging of material microstructure to precise measurements of fundamental constants.
B. Heacock, D. Sarenac, D. G. Cory, M. G. Huber, D. S. Hussey, C. Kapahi, H. Miao, H. Wen, D. A. Pushin   +8 more
doaj   +1 more source

Extended bound states in the continuum in a one-dimensional grating implemented on a distributed Bragg reflector

Nanophotonics, 2021
Bound states in the continuum (BICs) are observed in optical cavities composed of a high refractive index periodic structure embedded in significantly lower refractive index surroundings, enabling vertical confinement of the grating modes.
Pruszyńska-Karbownik Emilia, Janczak Mikołaj, Czyszanowski Tomasz   +2 more
doaj   +1 more source

Determination of the angle of rotation of the diffraction grating by the method of conical diffraction

Фізика і хімія твердого тіла, 2022
Diffractograms of rotated polyaniline fiber grating were studied experimentally. Based on the obtained results, the diffraction patterns were analyzed and set of experimental data obtained after image digitization was approximated by the least squares ...
P.P. Vankevych, B.D. Drobenko, N.Y. Ftomyn, Ya. M. Chornodolskyy, A.D. Chernenko, P.I. Vankevych, A. Y. Derevjanchuk, D. R. Moskalenko   +7 more
doaj   +1 more source

Two-dimension trapezoidal grating raytracing based on the scalar diffraction and scattering theory

AIP Advances, 2018
Diffraction grating is a fundamental optical element in spectral measurement or source monochromation. A newly designed grating named as two-dimension trapezoidal grating (TG), which not only has non-harmonic diffraction, non-background contaminations ...
Z. Yang, Q. Fan, P. Li, L. Wei, Q. Zhang, Y. Chen, Y. Wu, S. Wang, L. Cao   +8 more
doaj   +1 more source

Compact, astigmatism corrected cross-grating spectrometer [PDF]

EPJ Web of Conferences, 2020
Compact cross-grating spectrometers are inspired by classical high-end Echelle spectrometers and allow to acquire a large spectrum with a high spectral resolution in a single shot.
Kraus Matthias, Förster Erik, Bagusat Verena, Hönle Tobias, Uwurukundo Xavier, Bohnert Patrick, Brüning Robert, Hillmer Hartmut, Brunner Robert   +8 more
doaj   +1 more source

Surface Plasmon Resonances in Sn: In₂O₃ Thin Films with Diffraction Grating

Proceedings, 2018
We newly proposed transparent conductive oxide with diffraction grating structure as an excitation field of surface plasmon resonance working at near-infrared spectral region.
Noriyuki Hasuike, Saito Ochiai, Ryotaro Iwakiri, Minoru Takeda, Woo Sik Yoo, Toshiyuki Isshiki   +5 more
doaj   +1 more source

Surface-plasmon-enhanced strain-wave-induced optical diffraction changes from a segmented grating

Photoacoustics, 2023
We report on surface-plasmon-polariton-enhanced (SPP-enhanced), strain-wave-induced reflection and diffraction changes on a Au-covered, segmented grating.
Thomas J. van den Hooven, Paul C.M. Planken   +1 more
doaj   +1 more source

Mitigating the Impact of Asymmetric Deformation on Advanced Metrology for Photolithography

Applied Sciences
Controlling overlay in lithography is crucial for improving the yield of integrated circuit manufacturing. The process disturbances can cause undesirable morphology changes of overlay targets (such as asymmetric grating), which can significantly impact ...
Wenhe Yang, Shuxin Yao, Jing Cao, Nan Lin   +3 more
doaj   +1 more source

Phase Imbalance Optimization in Interference Linear Displacement Sensor with Surface Gratings

Sensors, 2020
In interferential linear displacement sensors, accurate information about the position of the reading head is calculated out of a pair of quadrature (sine and cosine) signals.
Sergey Odinokov, Maria Shishova, Michael Kovalev, Alexander Zherdev, Dmitrii Lushnikov   +4 more
doaj   +1 more source