Diffractive optical beam splitters designed with iterative Fourier transform type algorithms can produce only certain diffraction angles given by the spatial frequencies used for the computations, which are multiples of a certain base spatial frequency. We have developed a design algorithm that overcomes this limitation and can be used to compute binary diffractive elements with arbitrary diffraction angles. The simulated and experimentally measured properties of optical elements producing beam arrays in circular arrangements are presented and discussed.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/ol.32.000448 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Effect of pre-deformation on microstructure and mechanical properties of a fine-grained 2A97 alloy.
Micron
December 2024
Department of Chemical and Materials Engineering, The University of Auckland, New Zealand. Electronic address:
This study investigates the effect of pre-deformation by cold rolling after solution annealing on the microstructure and properties of the fine-grained Al-Li alloy 2A97. Electron backscatter diffraction (EBSD), X-ray diffraction (XRD) and transmission electron microscopy (TEM) were used to characterize grain boundaries, dislocations, precipitates and calculate their contribution to strength. It is found that the changes in precipitation behavior predominantly account for the enhanced tensile properties observed in the deformed alloys, where yield and tensile strengths are increased by 85 MPa and 63 MPa, respectively.
View Article and Find Full Text PDFDesign of soft x-ray high diffraction efficiency and spectral flux Au/Ni bilayer coated laminar-type diffraction grating for objective soft x-ray flat-field spectrograph in a region of 250-550 eV.
Rev Sci Instrum
December 2024
Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Aoba-ku, Sendai, Miyagi 980-8577, Japan.
An objective soft x-ray flat-field spectrograph employing a laminar-type bilayer coated, varied-line-spacing, spherical grating was designed to improve the detection limit and sensitivity of soft x-ray flat-field spectrographs in a region of 250-550 eV. As a design criterion, spectral flux, SF, [Hatano et al., Appl.
View Article and Find Full Text PDFImprovement of Photocatalytic and Photodegradable ZnSe Nanorods by a Vulcanization Strategy.
ACS Omega
December 2024
School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, Sichuan, China.
Photocatalysts composed of ZnSe nanorods were prepared by using a glancing angle deposition technique facilitated by electron beam evaporation equipment. To enhance the photocatalytic efficiency of ZnSe, a vulcanization process was introduced. The impact of various parameters, including curing temperature, duration, and nanorod length, on the photocatalytic performance was systematically examined.
View Article and Find Full Text PDFSynthesis and structure of -2,5-di-methyl-piperazine-1,4-diium di-hydrogen diphosphate.
Acta Crystallogr E Crystallogr Commun
October 2024
Laboratory of Materials Chemistry (LR13ES08), Faculty of Sciences of Bizerte, University of Carthage, 7021 Zarzouna, Bizerte, Tunisia.
In the title salt, CHN ·HPO , the complete dication is generated by a crystallographic centre of symmetry with the methyl groups in equatorial orientations. The complete dianion is generated by a crystallographic twofold axis with the central O atom lying on the axis: the P-O-P bond angle is 135.50 (12)°.
View Article and Find Full Text PDFPreparation of Amorphous Probucol with Fluvastatin Sodium Salt and Stability Comparison Studies of Co-amorphous Probucol with Fluvastatin Sodium Salt and Atorvastatin Calcium Trihydrate Salt.
Chem Pharm Bull (Tokyo)
December 2024
Department of Pharmaceutical Engineering, School of Pharmacy, Aichi Gakuin University.
A co-amorphous state composed of probucol (PC) and fluvastatin sodium salt (FLU) was prepared by spray-drying (SD). We have previously reported that PC and atorvastatin calcium trihydrate salt (ATO) formed a co-amorphous state when prepared by a SD method and that the solubility of PC and the amorphous stability were improved by the preparation of the co-amorphous state. In the present study, the physicochemical properties, including the amorphous stability of the prepared co-amorphous state, were characterized.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!