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An Optical Interferometer for Parallel Modulo Operation
2008
The Review of Laser Engineering
Preserved Fulltext
An optical processor for modulo operations is estimated. Large scale information processing for modulo operations is effective in an algorithm in prime factorization. ...
One of the features of the processor is that it achieves parallel data processing for modulo multiplication with only simple operation. ...
Parallel modulo operations in an algorithm for prime factorization Prime factorization is a process to extract prime factors from a target positive integer N. ...
doi:10.2184/lsj.36.1327
fatcat:nvf4xl4h3fcv5pguikyfyjj434
Near-perfect measuring of full-field transverse-spatial modes of light
[article]
2019
arXiv
pre-print
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Along with the growing interest in using the transverse-spatial modes of light in quantum and classical optics applications, developing an accurate and efficient measurement method has gained importance ...
We experimentally test the technique using a single spatial light modulator and achieve an average error of 4.2% for a set of 9 different full-field Laguerre-Gauss and Hermite-Gauss modes with an efficiency ...
Note that for the mode generation we also use an amplitude masking scheme [28] and overlay all phase structures with additional gratings in the experiment (not shown). ...
arXiv:1909.01685v1
fatcat:qig7pxtypncidcdcm2nnhvnpsu
Antenna Beamforming Using Optical Processing
1988
Optoelectronic Signal Processing for Phased-Array Antennas
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Random
fluctuations
in the
amplitude
and phase
of the transform
distribution
at the
antenna
aperture
could
be attributable
to several
factors
in the process
of
transmission
to and downconversion ...
Since parallel processing of both spatial and temporal aspects of the resultant antenna beam occurs in the network, the detected power at the output can be expressed as the sum of the individual paths" ...
doi:10.1117/12.944200
fatcat:wzafqhetzna47fzzrrofehpnue
Surface-plasmon spatial light modulators based on liquid crystal
1992
Applied Optics
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An optically addressed SLM that is based on a nematic liquid crystal with a spatial resolution better than 10 line pairs/mm (at 50% modulation transfer function) is demonstrated. ...
Such modes offer controllable sensitivity-spatial resolution characteristics in simple liquid-crystal SLM structures. ...
We thank the Science and Engineering Research Council for financial support of this work, the GEC-Marconi Research Centre for kindly providing the amorphous Si backplanes for our optically addressed SLM's ...
doi:10.1364/ao.31.003880
pmid:20725364
fatcat:rj3b6frdcbbktfex63ytswludi
Adiabatic evolution on a spatial-photonic Ising machine
[article]
2020
arXiv
pre-print
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Here, we realize the adiabatic evolution of frustrated Ising models with 100 spins programmed by spatial light modulation. ...
Our results demonstrate a photonic scheme for combinatorial optimization in analogy with adiabatic quantum algorithms and enforced by optical vector-matrix multiplications and scalable photonic technology ...
Optical Ising machines use multiple frequency or spa-tial channels to process data at high speed and in parallel. ...
arXiv:2005.08690v1
fatcat:iepjyposnfdrfdazvhuvyjzfma
Seventh-order wavefront modulation with a gravity-neutral optofluidic deformable phase plate
2021
Journal of Optical Microsystems
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A 63-electrode optofluidic refractive wavefront modulator enabling spatial frequency correction up to the seventh radial Zernike order, the highest spatial order ever achieved with a refractive dynamic ...
typical for optofluidic devices. ...
Acknowledgments This project has received funding from the German Federal Ministry for Economic Affairs and Energy (BMWi) and the European Social Fund (ESF) (Project DPAO, Grant No. 03EFOBW211). ...
doi:10.1117/1.jom.1.3.034502
fatcat:bryldjy4o5g67ayhjt7nl5mcoa
Motion compensation in structured illumination fluorescence endomicroscopy
2019
Endoscopic Microscopy XIV
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This offers potential for low cost, versatile, optically-sectioned endomicroscopy. ...
Endomicroscopy is a technique for obtaining real-time images in vivo, eliminating the need to biopsy a tissue sample. ...
ACKNOWLEDGMENTS This work was partially support by EPSRC Grant EP/R019274/1, Ultrathin Fluorescence Microscope in a Needle. ...
doi:10.1117/12.2509590
fatcat:7zjuwijlwvbrfjuijfq43r22aq
Structured light for ultrafast laser micro- and nanoprocessing
2021
Optical Engineering: The Journal of SPIE
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In the beam shaping concepts presented, special attention was paid to suitability for both high energies and high powers. ...
Recently, the combination of these remarkable temporal pulse properties with advanced structured light concepts has led to breakthroughs in the development of laser application methods, which will now ...
In this configuration, the SLM's left-hand side in combination with QWP and TFP acts as amplitude modulator and imprints and amplitude mask to the illuminating field. ...
doi:10.1117/1.oe.60.2.025105
fatcat:gtsghuayjfg6blwsyh27tyscay
Number–Space Interactions in the Human Parietal Cortex: Enlightening the SNARC Effect with Functional Near-Infrared Spectroscopy
2012
Cerebral Cortex
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Moreover, the involvement of left ANG is consistent with the mediating role of verbal/cultural factors in shaping interactions between numbers and space. ...
gyrus (ANG), a region implicated in verbal number processing. ...
The last 2 columns show the z scores for the SNARC effect (amplitude modulation) and the
distance effect (peak latency modulation). ...
doi:10.1093/cercor/bhs321
pmid:23081883
fatcat:gyku73faujbhfm2maqx5fjm25e
Page 2532 of Psychological Abstracts Vol. 86, Issue 7
[page]
1999
Psychological Abstracts
Preserved Fulltext
The Internet Archive has digitized a microfilm copy of this work. It may be possible to borrow a copy for reading.
frequency range by modulating the saccadic behavior as to increase the amplitude of ocular tor sion. ...
The results suggest that reading patterns should be considered as a potential confounding
factor in spatially directed attention as measured by cancellation performance
19726. ...
Autonomous Repeat Image Feature Tracking (autoRIFT) and Its Application for Tracking Ice Displacement
2021
Remote Sensing
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In this paper, we build on past efforts with regard to the implementation of an efficient feature tracking algorithm for the mass processing of satellite images. ...
When applied to satellite imagery, autoRIFT can run on a grid in the native image coordinates (such as radar or map) and, when used in conjunction with the Geogrid module, on a user-defined grid in geographic ...
The core processing in autoRIFT (i.e., NCC and image pre-processing) calls OpenCV's Python and C++ functions and has been parallelized with the capability of multithreading for further efficiency. ...
doi:10.3390/rs13040749
fatcat:5c65x7jtqnbctbduginlpndgzm
Optical framed knots as information carriers
2020
Nature Communications
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We further develop a protocol in which the topological properties of framed knots are used in conjunction with prime factorization to encode information. ...
Hence, structured light with topological properties could potentially be used for such purposes. ...
In the interferometer, the two polarized components are individually modulated by a spatial light modulator (SLM) and then coherently recombined to form an optical-framed knot. ...
doi:10.1038/s41467-020-18792-z
pmid:33037210
fatcat:qyygy5jadngjdio4gp7ovvvpqu
Measurement of density fluctuations using digital holographic interferometry in a standing wave thermoacoustic oscillator
2016
Experimental Thermal and Fluid Science
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This paper describes an optical set-up for measuring density fluctuations associated to acoustic oscillations in a thermoacoustic prime-mover. ...
of wave amplitude growth. ...
The spatial resolution is related to 1/∆u and 1/∆v respectively in 171 the x-y axis. In addition the phase recovered with Eq. (4) includes the spatial 172 carrier modulation that has to be removed. ...
doi:10.1016/j.expthermflusci.2015.09.012
fatcat:2d4yfkkoqnbptkok57lqd553qa
Optical Fourier processor and point-diffraction interferometer for moving-object trajectory estimation
1999
Applied Optics
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A hybrid optical-digital signal processing system that estimates the trajectory of moving targets in a two-dimensional field at video frame rates was developed and constructed. ...
conventional electronic processing techniques. ...
In this paper we describe a hybrid optical-digital signal processor that exploits and combines the parallel-processing capabilities of optical signal processing and the accuracy of digital signal processing ...
doi:10.1364/ao.38.004306
pmid:18323916
fatcat:ibdwxi6xbfbkvp3otvmixicybq
The Photodetector Array Camera and Spectrometer (PACS) on the HerschelSpace Observatory
2010
Astronomy and Astrophysics
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Other Versions
In photometry mode, it simultaneously images two bands, 60-85\mu\ m or 85-125\mu\m and 125-210\mu\ m, over a field of view of ~1.75'x3.5', with close to Nyquist beam sampling in each band. ...
In spectroscopy mode, it images a field of 47"x47", resolved into 5x5 pixels, with an instantaneous spectral coverage of ~1500km/s and a spectral resolution of ~175km/s. ...
Marliani's (ESTEC) support in fighting a crucial battle shall never be forgotten. ...
doi:10.1051/0004-6361/201014535
fatcat:sm5aztpvebe25amkln477dylju
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