Results 51 to 60 of about 6,802,009 (374)

Properties of Holographic Elements Based on Periodic Structures in a Wide Range of Angles of Incidence

Photonics, 2021
An experimental study is carried out on the diffraction and angular selectivity properties of gratings for a wide range of angles of incidence in three-dimensional space.
Nadezhda Vorzobova, Pavel Sokolov
doaj   +1 more source

Fabrication and Diffraction Efficiency of a Large-format, Replicated X-Ray Reflection Grating

Astrophysical Journal, 2018
We present the methodology used to fabricate an X-ray reflection grating and describe a technique for grating replication. Further, we present the experimental procedure and results of a study to measure the diffraction efficiency of a replicated X-ray ...
D. Miles, J. McCoy, R. McEntaffer, C. Eichfeld, G. Lavallee, Michael LaBella, W. Drawl, Bangzhi Liu, C. DeRoo, T. Steiner   +9 more
semanticscholar   +1 more source

Machined immersion grating with theoretically predicted diffraction efficiency

Applied Optics, 2015
Yuji Ikeda, Naoto Kobayashi, Yuki Sarugaku, Takashi Sukegawa, Shigeru Sugiyama, Sayumi Kaji, Kenshi Nakanishi, Sohei Kondo, Chikako Yasui, Hirokazu Kataza, Takao Nakagawa, Hideyo Kawakita   +11 more
openalex   +3 more sources

The Diffraction Efficiency of Acrylate-Based Holographically Photopolymerized Gratings Enhanced by the Dark Reaction

Photonics
Photopolymers, especially acrylate-based ones with low cost and simple preparation, are promising materials for high-efficiency holographic gratings. However, it is still challenging to achieve high-performance gratings, due to the influences of many ...
Ziyan Bai, Wenfeng Cai, Ming Cheng, Shun Lan, Delai Kong, Jian Shen, Mengjia Cen, Dan Luo, Yuan Chen, Yan Jun Liu   +9 more
doaj   +1 more source

Investigation on the Full-Aperture Diffraction Efficiency of AOTF Based on Tellurium Dioxide Crystals

Photonics
The influence of acoustic field distribution and temperature variations on the full-aperture diffraction efficiency of non-collinear acousto-optic tunable filters (AOTFs) was investigated based on tellurium dioxide crystals.
Zhiyuan Mi, Huijie Zhao, Qi Guo, Zhoujun Zhong, Chengsheng Zhou   +4 more
doaj   +1 more source

Optimal Control of Passive Cascaded Liquid Crystal Polarization Gratings

Applied Sciences, 2023
The incidence angle of a beam entering a liquid crystal variable retarder (LCVR) and the liquid crystal polarization grating (LCPG) is greater when the LCPG is utilized in the quadrature cascade, which reduces the diffraction efficiency.
Huan Qin, Zhuang Liu, Qidong Wang, Qiang Fu   +3 more
doaj   +1 more source

Improving the diffraction efficiency of structures in direct laser writing using obliquely incident beams: modeling and experiment

Компьютерная оптика, 2023
A brief review of methods for increasing the diffraction efficiency of optical elements synthesized by direct laser writing is done. It is noted that the previously proposed methods for recording the topology of similar elements using volumetric or ...
V.P. Kiryanov, N.A. Gurin
doaj   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Optical Design of a Slitless Astronomical Spectrograph with a Composite Holographic Grism

Photonics, 2023
In the present work, we consider an optical design of a slitless spectrograph for an existing 0.5 m-class telescope. This design concept has a number of advantages such as compact size, simplicity, and simultaneous coverage of a large field of view.
Eduard Muslimov, Damir Akhmetov, Danila Kharitonov, Erik Ibatullin, Nadezhda Pavlycheva, Vyacheslav Sasyuk, Sergey Golovkin   +6 more
doaj   +1 more source

Diffraction efficiency of localized holograms in doubly doped LiNbO3 crystals [PDF]

, 2000
The diffraction efficiency of M holograms superimposed in the volume of the recording medium is proportional to 1/M^2. We present a method, based on nondestructive localized holograms in a doubly doped LiNbO3 crystal, that allows us to also record M ...
Adibi, Ali, Maravic, Irena, Moser, Christophe, Psaltis, Demetri, Schupp, Benjamin   +4 more
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