Results 11 to 20 of about 2,535 (259)

Spectral splitting and concentration of broadband light using neural networks

APL Photonics, 2021
Compact photonic elements that control both the diffraction and interference of light offer superior performance at ultra-compact dimensions. Unlike conventional optical structures, these diffractive optical elements can provide simultaneous control of ...
Alim Yolalmaz, Emre Yüce
doaj   +1 more source

Linearly modulated multi-focal diffractive lens for multi-sheet excitation of flow driven samples in a light-sheet fluorescence microscope

Journal of the European Optical Society-Rapid Publications, 2023
Light sheet fluorescence microscope with single light sheet illumination enables rapid 3D imaging of living cells. In this paper we show the design, fabrication and characterization of a diffractive optical element producing several light sheets along a ...
Hofmann Meike, Gharbi Ghebjagh Shima, Feng Yuchao, Fan Chao, Lemke Karen, Sinzinger Stefan   +5 more
doaj   +1 more source

Linearly modulated multi-focal diffractive lens for multi-sheet excitation of flow-driven samples in a light-sheet fluorescence microscope [PDF]

EPJ Web of Conferences, 2022
Light-sheet fluorescence microscopy (LSFM) with single light-sheet illumination enables rapid 3Dimaging of living cells. In this paper we show the design, fabrication and characterization of a diffractive optical element producing several light sheets ...
Hofmann Meike, Gharbi Ghebjagh Shima, Fan Chao, Feng Yuchao, Lemke Karen, Sinzinger Stefan   +5 more
doaj   +1 more source

Implementation of a Large-Area Diffractive Lens Using Multiple Sub-Aperture Diffractive Lenses and Computational Reconstruction

Photonics, 2022
Direct imaging systems that create an image of an object directly on the sensor in a single step are prone to many constraints, as a perfect image is required to be recorded within this step.
Shivasubramanian Gopinath, Praveen Periysamy Angamuthu, Tauno Kahro, Andrei Bleahu, Francis Gracy Arockiaraj, Daniel Smith, Soon Hock Ng, Saulius Juodkazis, Kaupo Kukli, Aile Tamm, Vijayakumar Anand   +10 more
doaj   +1 more source

Polarization converter for higher-order laser beams based on the use of forming binary diffractive optical elements as beam splitter

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012
We propose a new approach to generating a pair of initial beams for a polarization converter that operates by summing up two opposite-sign circularly polarized beams.
S. V. Karpeev, S. N. Khonina, O. Yu. Moiseev, S. V. Alferov, A. V. Volkov   +4 more
doaj   +3 more sources

Comparison of far field characterisation of DOEs with a goniometric DUV-scatterometer and a CCD-based system [PDF]

Journal of the European Optical Society-Rapid Publications, 2011
We have measured far field diffraction patterns of different diffractive optical elements at an illumination wavelength of 193 nm using a new type of goniometric DUV (deep ultraviolet) scatterometer.
Wurm Matthias, Bonifer Stefanie, Bodermann Bernd, Gerhard Michael   +3 more
doaj   +1 more source

High Concentration Photovoltaics (HCPV) with Diffractive Secondary Optical Elements

Photonics, 2019
Multi-junction solar cells can be economically viable for terrestrial applications when operated under concentrated illuminations. The optimal design of concentrator optics in high concentration photovoltaics (HCPV) systems is crucial for achieving high ...
Furkan E. Sahin, Musa Yılmaz
doaj   +1 more source

Selective modification of dual phase steel DP 1000 by laser action using diffractive optical element [PDF]

Компьютерная оптика, 2019
Experimental studies of shaping a CO2 laser beam with a reflective diffractive optical element have been performed. To increase the aperture of the initial beam, we used a collimator containing a system of two plane-convex spherical ZnSe lenses.
Serguei Murzin, Maksim Blokhin
doaj   +1 more source

Nanooptical elements for visual verification

Scientific Reports, 2021
This paper focuses on the development of flat diffractive optical elements (DOEs) for protecting banknotes, documents, plastic cards, and securities against counterfeiting.
Alexander Goncharsky, Anton Goncharsky, Dmitry Melnik, Svyatoslav Durlevich   +3 more
doaj   +1 more source

Modern Types of Axicons: New Functions and Applications

Sensors, 2021
Axicon is a versatile optical element for forming a zero-order Bessel beam, including high-power laser radiation schemes. Nevertheless, it has drawbacks such as the produced beam’s parameters being dependent on a particular element, the output beam’s ...
Svetlana N. Khonina, Nikolay L. Kazanskiy, Pavel A. Khorin, Muhammad A. Butt   +3 more
doaj   +1 more source