Results 31 to 40 of about 6,470,544 (298)

Nonlinear Optics

open access: yesFrontiers in Photonics, 2021
Nonlinear science, i.e., the study of systems capable of generating new frequencies, is ubiquitous and fascinating; as opposed to linear science, where we often have well known tools to tackle a specific problem, when nonlinearity comes into play, and ...
Costantino De Angelis
semanticscholar   +1 more source

Measurement and correction of two-sided freeform optical elements with combined tactile-optical metrology equipment [PDF]

open access: yesEPJ Web of Conferences, 2019
Freeform optical elements are state of the art for several years to fabricate very high performance optical systems with the necessity of, e.g., strong folding in mirror system or correction of typical asymmetric aberrations in mirror systems as well as ...
Hartung Johannes   +5 more
doaj   +1 more source

Analysis on Location Accuracy for the Binocular Stereo Vision System

open access: yesIEEE Photonics Journal, 2018
Binocular stereo vision (BSV) system has been widely used in various fields, such as intelligent manufacture, smart robot, and so on. However, the location accuracy of the current BSV still cannot fully satisfy industry requirements due to lack of a ...
Lu Yang   +4 more
doaj   +1 more source

Multifunctional contamination-resistant coatings [PDF]

open access: yesEPJ Web of Conferences, 2019
Surface contaminations can critically affect the performance of optical surfaces, in particular with respect to light scattering, optical losses, and laser stability.
Felde Nadja   +3 more
doaj   +1 more source

Deep-Learning-Aided Extraction of Optical Constants in Scanning Near-Field Optical Microscopy [PDF]

open access: yes, 2022
Scanning near-field optical microscopy is one of the most effective techniques for spectroscopy of nanoscale systems. However, inferring optical constants from the measured near-field signal can be challenging because of a complicated and highly nonlinear interaction between the scanned probe and the sample. Conventional fitting methods applied to this
arxiv   +1 more source

Metasurface-enabled three-in-one nanoprints by multifunctional manipulations of light

open access: yesiScience, 2021
Summary: In metasurface-based ultra-compact image display, color-nanoprints, gray-imaging elements, and binary-pattern-imaging elements are three different types of nanoprints, implemented with different mechanisms of light manipulation.
Zile Li   +6 more
doaj  

First-principles experimental demonstration of ferroelectricity in a thermotropic nematic liquid crystal: Polar domains and striking electro-optics

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2020
Significance Conspicuously in the background in the history of liquid crystals is the ferroelectric nematic (NF) phase. Predicted by Debye and Born 100 y ago and since revisited extensively, in systems ranging from colloidal suspensions of rods or discs ...
Xiangshan Chen   +10 more
semanticscholar   +1 more source

Terahertz optoacoustic detection of aqueous salt solutions

open access: yesiScience, 2022
Summary: Terahertz radiation has been used to detect aqueous salt solutions; however, strong absorption of water in terahertz regime limits the application of traditional terahertz techniques.
Liwen Jiang   +6 more
doaj  

Optical path difference evaluation of laser-soldered optical components [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2015
We present Solderjet Bumping, a laser-based soldering process, as an all inorganic joining technique for optical materials and mechanical support structures.
Burkhardt T.   +3 more
doaj   +1 more source

Optical Design and Investigation of a Dual-Interference Channels and Bispectrum Static Fourier-Transform Imaging Spectrometer Based on Stepped Micro-Mirror

open access: yesIEEE Access, 2021
We demonstrate a novel tempo-spatial mixed-modulation Fourier-transform infrared imaging spectrometer. The static interference channel based on a stepped micro-mirror contributes a compact system with high stability.
Jun Ren   +7 more
doaj   +1 more source

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