Results 81 to 90 of about 7,097 (301)

Paper on Designing Costless THz Paper Optics

open access: yesAdvances in Materials Science and Engineering, 2016
Designing diffractive optical elements is crucial for efficient development of THz techniques. Here, we consider paper structures and we analyze their advantages and disadvantages in fast prototyping.
A. Siemion   +4 more
doaj   +1 more source

PASTA‐ELN: Simplifying Research Data Management for Experimental Materials Science

open access: yesAdvanced Engineering Materials, EarlyView.
Research data management faces ongoing hurdles as many ELNs remain complex and restrictive. PASTA‐ELN offers an open‐source, cross‐platform solution that prioritizes simplicity, offline access, and user control. Its in tuitive folder structure, modular Python add‐ons, and open formats enable seamless documentation, FAIR data practices, and easy ...
S. Brinckmann, G. Winkens, R. Schwaiger
wiley   +1 more source

Damage investigation on tungsten and diamond diffractive optics at a hard x-ray free-electron laser

open access: yes, 2013
Focusing hard x-ray free-electron laser radiation with extremely high fluence sets stringent demands on the x-ray optics. Any material placed in an intense x-ray beam is at risk of being damaged. Therefore, it is crucial to find the damage thresholds for
Schroer, C. G.   +15 more
core   +1 more source

Compensation for time fluctuations of phase modulation in a liquid-crystal-on-silicon display by process synchronization in laser materials processing [PDF]

open access: yes, 2011
We demonstrate the adverse influence of temporal fluctuations of the phase modulation of a spatial light modulator (SLM) display device on nanosecond laser micromachining.
Rainer J. Beck   +7 more
core   +1 more source

A Holography-Based Modal Wavefront Sensor for the Precise Positioning of a Light Emitter Using a High-Resolution Computer-Generated Hologram

open access: yesIEEE Photonics Journal, 2018
In certain applications, modal wavefront sensors (MWFSs) can outperform zonal wavefront sensors, which are widely used due to their high flexibility.
Florian Loosen   +4 more
doaj   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

open access: yesAdvanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova   +2 more
wiley   +1 more source

Efficient generation of periodic and quasi-periodic non-diffractive optical fields with phase holograms [PDF]

open access: yes, 2011
The superposition of multiple plane waves with appropriate propagation vectors generates a periodic or quasi-periodic non-diffractive optical field. We show that the Fourier spectrum of the phase modulation of this field is formed by two disjoint parts ...
JULIAN DAVID SANCHEZ DE LA LLAVE   +3 more
core  

Refractive-diffractive hybrid optics array: comparative analysis of simulation and experiments

open access: yes, 2022
Hybrid optical elements, which combine refractive and diffractive optical components to enhance optical performance by taking advantage of the optical characteristics of the individual components, have enormous potential for next-generation optical ...
Low, Mun Ji   +7 more
core   +1 more source

Diffractive Optics [PDF]

open access: yesOptical Engineering, 2004
Hanna Lajunen, Jani Tervo, Jari Turunen
openaire   +2 more sources

Wavefront analysis and modulation transfer function of three multifocal intraocular lenses

open access: yesIndian Journal of Ophthalmology, 2010
Purpose: To evaluate wavefront performance and modulation transfer function (MTF) in the human eye after the implantation of diffractive or refractive multifocal intraocular lenses (IOLs). Materials and Methods: This was a prospective, interventional,
Santhiago Marcony   +5 more
doaj  

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