bluuebunny/crossref_metadata_2025 huggingface dataset:
Da crise à reinvenção dos sindicatos na era digital: a teoria do reconhecimento como proposta de proteção social.
Authors: Da Silva Oliveira Marcos Paulo
Published: January 2022

O presente artigo analisa o movimento sindical brasileiro a partir da crise do Direito do Trabalho ocasionada pelas novas tecnologias. A pesquisa é teórica, tendo como pano de fundo a noção de uma era do software, na qual as tecnologias da informação e comunicação são instrumentalizadas para precarizar o trabalho humano, culminando no agravamento da crise dos sindicatos obreiros e do próprio Direito do Trabalho. Desse diagnóstico objetiva-se,na presente pesquisa, por meio de um método jurídico-prospectivo, apontar tendências futuras para o sindicalismo obreiro, na tentativa de indicar caminhos para a superação do atual cenário de enfraquecimento dos movimentos sindicais no Brasil. Para tal formulação, propõe-se uma investigação interdisciplinar tendo como importante marco teórico a teoria do reconhecimento recíproco de Axel Honneth em diálogo com as abordagens sobre redistribuição de renda e os novos movimentos sociais. Nesse contexto, aponta-se a importância de que os sindicatos se articulem em redes e engajem-se politicamente para além das pautas econômicas, utilizando-se das novas tecnologias da informação e da comunicação como instrumentos de reaproximação com as bases, reconstruindo os laços de solidariedade tão caros para as lutas sociais empreendidas no mundo do trabalho.
Los niveles de la representación y el perfil del narrador en el NO-DO. El caso de Córdoba. Selección de reportajes (1946-1951).
Authors: Valverde Maestre Águeda María
Published: January 2022

El NO-DO surge ante la necesidad de crear un noticiario oficial durante la dictadura franquista. Por lo general, estas obras audiovisuales, consideradas como expresiones del patrimonio histórico y audiovisual español, son examinadas con el objeto de analizar fenómenos como el rol de la mujer en la dictadura o las herramientas propagandísticas empleadas. No obstante, este estudio se centra en la dimensión textual del NO-DO, analizando las tipologías del narrador, los puntos de vista y los regímenes de la representación presentes en la recopilación “Córdoba. Selección de reportajes” (1946- 1951), elaborada por Radio Televisión Española (1976). Su finalidad es descubrir nuevos rasgos estructurales del NO-DO. Los resultados de esta investigación aportan nuevas nociones acerca de las particularidades narrativas y discursivas de las cintas, protagonizadas por la ausencia de cambios a lo largo de tres años.
Nuevas fuentes documentales para el estudio de la prensa en España durante el franquismo: El Archivo Regional de la Comunidad de Madrid.
Authors: Solís Herráiz María Pilar
Published: January 2022

: El objeto de este artículo es dar a conocer los fondos custodiados en el Archivo Regional de la Comunidad de Madrid susceptibles de ser fuente primaria para la investigación en el campo de la comunicación, concretamente en la historia de la prensa en España, en el periodo cronológico que coincide con el franquismo. Estos fondos son “Prensa del Movimiento de Madrid” y “Lucio del Álamo”, quien ocupó entre otros cargos el de delegado nacional de Prensa, ambos recientemente tratados (organizados, clasificados, ordenados y descritos) por la Unidad de Descripción del Archivo Regional de la Comunidad de Madrid y puestos a disposición de los investigadores. A través de ellos podemos conocer aspectos tan distintos como la distribución de los ejemplares, el reparto del papel en años de fuertes restricciones (materia prima básica para la prensa), las retribuciones a los distintos colaboradores, el trabajo en los talleres, la incautación de periódicos, inmuebles o maquinaria, etc., en su mayoría de la Prensa del Movimiento y, en menor medida, de otros medios de comunicación.
Arbitraje de consumo: Bases dogmáticas de un modelo para el acceso a la justicia del consumidor en Chile desde la mirada del derecho internacional y comparado
Authors: JEQUIER Lehuedé EDUARDO
Published: January 2022

Este trabajo trata sobre los principios y fundamentos dogmáticos de general aplicación que describen y modelan el arbitraje sobre asuntos de consumo, tomando en especial consideración la naturaleza las relaciones de consumo y la desigualdad que existe entre las partes del conflicto, proveedor y consumidor. Se recoge para ello el desarrollo que muestra el derecho internacional y particularmente el derecho comunitario europeo, con miras a su regulación en el ordenamiento jurídico chileno en particular.
A Scalable Algorithm for Sparse Portfolio Selection
Authors: Bertsimas Dimitris , Cory-Wright Ryan
Published: January 2022

The sparse portfolio selection problem is one of the most famous and frequently studied problems in the optimization and financial economics literatures. In a universe of risky assets, the goal is to construct a portfolio with maximal expected return and minimum variance, subject to an upper bound on the number of positions, linear inequalities, and minimum investment constraints. Existing certifiably optimal approaches to this problem have not been shown to converge within a practical amount of time at real-world problem sizes with more than 400 securities. In this paper, we propose a more scalable approach. By imposing a ridge regularization term, we reformulate the problem as a convex binary optimization problem, which is solvable via an efficient outer-approximation procedure. We propose various techniques for improving the performance of the procedure, including a heuristic that supplies high-quality warm-starts, and a second heuristic for generating additional cuts that strengthens the root relaxation. We also study the problem’s continuous relaxation, establish that it is second-order cone representable, and supply a sufficient condition for its tightness. In numerical experiments, we establish that a conjunction of the imposition of ridge regularization and the use of the outer-approximation procedure gives rise to dramatic speedups for sparse portfolio selection problems.

Summary of Contribution: This paper proposes a new decomposition scheme for tackling the problem of sparse portfolio selection: the problem of selecting a limited number of securities in a portfolio. This is a challenging problem to solve in high dimensions, as it belongs to the class of mixed-integer, nonseparable nonlinear optimization problems. We propose a new Benders-type cutting plane method and demonstrate its efficacy on a wide set of both synthetic and real-world problems, including problems with thousands of securities. Our approach also provides insights for other mixed-integer optimization problems with logical constraints.
Bidder Support in Multi-item Multi-unit Continuous Combinatorial Auctions: A Unifying Theoretical Framework
Authors: Adomavicius Gediminas , Gupta Alok , Yang Mochen
Published: January 2022

Combinatorial auctions have seen limited applications in large-scale consumer-oriented marketplaces, partly due to the substantial complexity to keep track of auction status and formulate informed bidding strategies. We study the bidder support problem for the general multi-item multi-unit (MIMU) combinatorial auctions, where multiple heterogeneous items are being auctioned and multiple homogeneous units are available for each item. Under two prevalent bidding languages (OR bidding and XOR bidding), we derive theoretical results and design efficient algorithmic procedures to calculate important bidder support information, such as the winning bids of an auction and the minimum bidding value for a bid to win an auction either immediately or potentially in the future. Our results unify the theoretical insights on bidder support problem for different bidding languages as well as different special cases of general MIMU auctions, namely the single-item multi-unit (SIMU) auctions and the multi-item single-unit (MISU) auctions. We also consider auctions with additional bidding constraints, including batch-based combinatorial auctions and hierarchical combinatorial auctions, as well as the combinatorial reverse auctions, all of which have relevant practical applications (e.g., industrial procurements). Our results can be readily extended to solve the bidder support problems in these auction mechanisms.
Dual Bounds for Periodical Stochastic Programs
Authors: Shapiro Alexander , Cheng Yi
Published: January 2022

A construction of the dual of a periodical formulation of infinite-horizon linear stochastic programs with a discount factor is discussed. The dual problem is used for computing a deterministic upper bound for the optimal value of the considered multistage stochastic program. Numerical experiments demonstrate behavior of that upper bound, especially when the discount factor is close to one.
Unicentric Castleman Disease and Pheochromocytoma
Authors: Maia Rosana , Couto Joana , Martins José Diogo , Torre Edgar , Guerra Diana
Published: January 2022

Castleman disease is an uncommon and heterogenous lymphoproliferative disorder which is classified as unicentric or multicentric depending on the number of lymph nodes involved. Each type has a different clinical presentation, aetiology, treatment and prognosis. We report the case of a young woman who presented with cervical lymphadenopathy and a retroperitoneal mass, and was diagnosed with unicentric Castleman disease and pheochromocytoma. We describe the diagnostic steps, the complications that developed, and the importance of the differential diagnosis in the evaluation of these patients.
Reflections on the old year and wishes for the new
Authors: Oxtoby Kathy
Published: January 2022

Practice managers talk to Kathy Oxtoby about how they got through the challenges of 2021, the positives they will take away from last year and their wish list for the profession in 2022
Opportunistic patient advice, in brief
Authors: Hancock Dave
Published: January 2022

What can you say to a patient in 30 seconds? Importantly, can you give them useful health advice in that time? Dave Hancock examines research and guidance about Making Every Contact Count
What is the position with declaration of GP earnings?
Authors: Clark Ross
Published: January 2022

Ross Clark, a partner in the specialist healthcare law firm Hempsons, provides some guidance on the thorny issue of having to declare GP earnings
How to Determine the Cost of Capital for Commercial Forestry
Authors: Beljan Karlo , Dolinar Denis , Hodges Donald
Published: January 2022

This paper focuses on designing a methodological workflow to fill a knowledge gap for determining the cost of capital for commercial forestry projects. Upon reviewing the literature, a method to determine the cost of capital for profit-oriented forestry seems to be lacking. Accordingly, we selected and analyzed 42 companies that do businesses worldwide, are present on the stock exchange, and possess or lease forest land. Based on their business activities (growing forest, sawmilling, final production, paper production), these companies are classified into four subgroups. An algorithm has been devised using the concept of risk diversification and the capital asset pricing model for three groups of investors and four forestry subgroups. In doing so, the real risk-free rate (0.43%) is set as the difference between an average return on 10-year US government bonds (2.59% nominal) and the 10-year average US inflation rate (2.16%). The measure of forestry systematic risk (beta coefficient) varies between 0.83 and 1.41, while the equity (stock exchange market) risk premium is set to 6%. Unsystematic risk is determined using a process of mapping which takes into account all risk elements marked as relevant for the forestry sector. This approach provides results that reveal the cost of capital varying between 5.41% and 16.55% based on the current level of an investor's portfolio diversification and the risk characteristics of the forestry subgroup. Finally, the forestry companies meeting the investor's expectations are noted as preferable investment opportunities.
Design of a multispectral plenoptic camera and its application for pyrometry
Authors: Fahringer Timothy W. , Danehy Paul M. , Hutchins William D. , Thurow Brian S.
Published: January 2022

A multispectral imaging system, based on a modified plenoptic camera, is presented. By adding a color filter in the aperture plane of the imaging system, it is possible to simultaneously image multiple discrete colors of light—seven in this design. To develop a measurement system that does not rely onin situcalibrations, each of the optical elements was characterizeda priori. For the camera sensor, measurements of the exposure linearity, exposure duration, and quantum efficiency were measured. Additionally, the transmission of the optical filters, both spectral and neutral density, as well as the signal attenuation of the filter holder itself were measured. These measurements result in an instrument that can quantitatively image the emission of seven discrete spectral bands simultaneously. An example application of pyrometry is presented where the emission of a blackbody calibration source with known temperature was imaged. It was determined that by fitting the measured emission at seven wavelengths to Planck’s law of radiation, the temperature could be determined to a mean difference of 0.65ºC across five temperatures from 600° to 1000ºC when compared to the set-point temperature.
Experimental study of high-intensity light channels produced on an extended air path by phase and amplitude modulated femtosecond laser pulses
Authors: Apeksimov D. V. , Geints Yu. E. , Matvienko G. G. , Oshlakov V. K. , Zemlyanov A. A.
Published: January 2022

We present the results of our experimental study of the propagation dynamics of high-power femtosecond laser radiation in air with initially imposed amplitude and/or phase modulations. Depending on the modulation type and magnitude, the laser pulse upon nonlinear propagation breaks up into several high-intensity spatially localized light channels, which may or may not contain air plasma and thus are referred to as laser filaments, post-filaments, or plasmaless channels. The pulse modulations are implemented by means of control of the phase or amplitude front using a bimorph deformable mirror or amplitude masks, respectively. We show that the distance of formation and spatial length of high-intensity light channels along a propagation path strongly depend on the shapes and spatial positions of the inhomogeneities created in the transverse phase/amplitude pulse profile, but weakly depend on their sizes.
Design and characteristic analysis of an all-optical AND, XOR, and XNOR Y-shaped MIM waveguide for high-speed information processing
Authors: Sreevani Alluru , Charles Ipshitha , Swarnakar Sandip , Krishna Sabbi Vamshi , Kumar Santosh
Published: January 2022

All-optical logic gates are exceptionally suited for Boolean ultrahigh-speed operation and logical computing. This study presents a plasmonic model that uses a Y-shaped metal–insulator–metal waveguide structure that realizes the ultrafast all-optical AND, XOR, and XNOR gate operation that is developed at a footprint of

6.6

µ

m

×
3.4

µ

m

with a wavelength of 1.55 µm. This construction relies on the notion of linear interference. The insertion loss and extinction ratio of the model are observed as 1.49 dB and 21.49 dB for AND, 1.03 dB and 18.97 dB for XOR, and 2.06 dB, and 10.92 dB for XNOR, respectively. The transmission efficiency, response time, and speed of the structure also are calculated and are used to improve the performance of any complex circuit in the future. The theoretical analysis of the proposed structure is carried out using the finite-difference time-domain method.
Triple-Ionization in Strong-Laser Fields
Authors: Prauzner-Bechcicki Jakub S. , Mandrysz Michał , Efimov Dmitry , Ciappina Marcelo , Lewenstein Maciej , Zakrzewski Jakub
Published: January 2022

The triple-ionization of atoms in a strong laser field is analyzed with use of restricted-space model. The effect of Pauli principle on the dynamics of electrons is illustrated by Dalitz plots representing momentum distributions.
Recent Progress in Coherent Ising Machines
Authors: Yamamoto Y. , Inui Y. , Reifenstein S. , Kako S. , Khoyratee F. , Leleu T.
Published: January 2022

In this talk we will discuss various recent results on coherent Ising machines (CIM): the quantum principles, new application as heuristic algorithms on current digital platform and energy-to-solution.
Sensing with coupled-core optical fiber Bragg gratings
Authors: Flores-Bravo J. A. , Madrigal J. , Zubia J. , Margulis W. , Sales S. , Villatoro J.
Published: January 2022

Sensitive bending and vibration sensors based on a coupled-core optical fiber with Bragg gratings are proposed and demonstrated. The interrogation of such sensors is cost effective without comprising the sensors performance.
A New Static and Dynamic Full Field Transmission Optical Tomography Approach (FFOTT)
Authors: Thouvenin Olivier , Boccara Martine , Boccara Claude
Published: January 2022

Full Field Optical Transmission Tomography relates to optical tomography, and more precisely to a new type of endogenous cell imaging technique offering structural and metabolic contrasts.
Giant long-range dipole-dipole interactions in a plasmonic lattice
Authors: Boddeti Ashwin K. , Guan Jun , Sentz Tyler , Juarez Xitali , Newman Ward , Cortes Cristian , Odom Teri W. , Jacob Zubin
Published: January 2022

We observe long-range dipole-dipole interactions in a plasmonic lattice. Fluorescence lifetime measurements show density-dependent non-exponential decay dynamics over 800nm mean nearest-neighbour separation distances between interacting emitters.
Rapid Fabrication of Glass Microlens Array Using Laser Assisted 3D Printing
Authors: Liu C. , Oriekhov T. , Fokine M.
Published: January 2022

Rapid manufacturing of silica glass microlens arrays is demonstrated using a novel glass 3D printing technology. A 5×5 array was printed and subsequent characterization showed dense microlenses with uniform focal lengths and good imaging performance.
Blind speckle illumination for aberration correction
Authors: Premillieu Evolene , Labouesse Simon , Irsch Kristina , Piestun Rafael
Published: January 2022

We propose a computational optical technique based on speckle-pattern illumination of an object and a gradient descent algorithm, enabling aberration correction without requiring the addition of adaptive optics.
Comparative Analysis of Optical Compensation Methods for Deblurring of Retinal Image in Cataractous Type Media
Authors: Panezai Spozmai , Villar Alfonso Jimenez , Diaz Alba Paniagua , Arias Augusto , Gondek Grzegorz , Grulkowski Ireneusz , Artal Pablo
Published: January 2022

A comparative analysis between two optical compensation methods, phase conjugation and amplitude modulation, has been carried out to test the visual improvements in retinal images in cataractous eyes.
Cherenkov Light Emission in Molecular Radiation Therapy of Hyperthyroidism
Authors: Dubal Jigar , Florescu Lucia
Published: January 2022

We perform numerical experiments based on Monte Carlo simulations and clinical CT data to investigate Cherenkov light emission in molecular radiation therapy of hyperthyroidism, and demonstrate that Cherenkov light-based dosimetry could be feasible.
Soil-Insulated Fiber-Optic Interferometry
Authors: Hoque Nabil Md Rakinul , Duan Lingze
Published: January 2022

We report experimental evidence that demonstrates normal garden soil as an effective insulation material to provide thermal and acoustic isolations in precision fiber-optic interferometry.
A Calibration Method for MEMS Mirror Based Structured Light 3D Modeling System Using Striped Patterns
Authors: Yang Di , Qiao Dayong , Xia Changfeng
Published: January 2022

We report a MEMS mirror based structured light 3D modeling system which can only project striped patterns. A calibration method is proposed for this structured light system. Experiment results demonstrate an accuracy of 0.26 mm was achieved.
Attosecond Imaging of Resonant Photoemission Dynamics
Authors: Autuori A. , Platzer D. , Lejman M. , Gallician G. , Maëder L. , Covolo A. , Bosse L. , Dalui M. , Bresteau D. , Hergott J.-F. , Tcherbakoff O. , Marroux H.J.B. , Loriot V. , Lépine F. , Poisson L. , Taïeb R. , Caillat J. , Salières P.
Published: January 2022

Using momentum-resolved electron interferometry, we image helium two- photon ionization through intermediate bound states. This allows reconstructing in space and time the complete formation of the photoionized wavepacket.
High-flux, 100-kHz Attosecond Pulse Train Source Driven by a High Average-Power Laser Beam
Authors: Ye Peng , Oldal Lénárd Gulyás , Csizmadia Tamás , Filus Zoltán , Grósz Tímea , Jójárt Péter , Seres Imre , Bengery Zsolt , Gilicze Barnabás , Kahaly Subhendu , Varjú Katalin , Major Balázs
Published: January 2022

We report the generation of 50 pJ attosecond pulse trains at 100-kHz using a high average-power annular laser beam, which is the highest one until now among systems of repetition rate higher than 10 kHz.
Photonic molecule electro-optic modulators for efficient, widely tunable RF sideband generation and wavelength conversion
Authors: Singh Manuj , Zhang Bohan , Onural Deniz , Gevorgyan Hayk , Popović Miloš A.
Published: January 2022

We propose photonic molecule electro-optic modulators with tunable supermode splitting for efficient widely tunable RF sideband generation. Using an auxiliary tunable off-resonant cavity as a variable coupler maintains a high Q/V.
Can one critically couple to a multimode, coupled-cavity finite equispaced comb resonator?
Authors: Singh Manuj , Zhang Bohan , Popović Miloš A.
Published: January 2022

A finite-equispaced-comb resonator based on N “Kac-matrix” coupled cavities could be an important photonic building block. To maximally excite all comblines: there’s a best cavity to couple to the bus waveguide; and, we “critically couple” the geometric mean of the supermode escape rates.
Tunably coupled photonic molecules on a chip scale
Authors: Woska Simon , Rietz Pascal , Karayel Osman , Kalt Heinz
Published: January 2022

We present an all-polymeric photonic molecule from coupled whispering gallery mode cavities on a chip-scale liquid crystal elastomer substrate. The substrate’s temperature-induced actuation is used to widely and precisely tune the coupling strength.
Quantum-Enhanced Interferometry Via Extreme Non-Degenerate Energy-Entangled Photons
Authors: Lualdi Colin P. , Meier Kristina A. , Johnson Spencer J. , Kwiat Paul G.
Published: January 2022

We perform two-photon interference with highly non-degenerate frequency-entangled photons. Our system improves on existing interferometers by promising attosecond temporal resolution while offering robustness against dispersion, background, and loss.
Imaging Light-Matter Interactions Following Ultrafast Processing of Transparent Materials
Authors: Ross Matthew , Rothenbach Christian
Published: January 2022

Ultrafast laser processing of brittle transparent materials involves a chain of physical processes on timescales from femtoseconds to milliseconds. Using time-resolved imaging, this paper reports on several of these processes and relevant timescales.
Mechanisms of Nonlinear Refractive Index in Organic Ultrastrongly Coupled Polaritons
Authors: Schwab Samuel , Christopherson William , Twieg Robert , Crescimanno Michael , Singer Kenneth
Published: January 2022

We use the z-scan technique to measure the intensity dependent complex refractive index in organic ultrastrongly coupled polaritons. We find an enhanced response arising from an induced blue-shift described by a three-level quantum optical model.
Structuring Harmonic Vector-Vortex Beams in the Extreme Ultraviolet
Authors: de las Heras Alba , Pandey Alok Kumar , Román Julio San , Serrano Javier , Baynard Elsa , Dovillaire Guillaume , Pittman Moana , Durfee Charles G. , Plaja Luis , Kazamias Sophie , Guilbaud Olivier , Hernández-García Carlos
Published: January 2022

The synchronous control of spin and orbital angular momentum in high-harmonic generation allows us to introduce experimentally and theoretically a novel XUV structured beam with spatially-varying polarization and phase, high topological charge, and robust propagation.
Higher-Order Fractal Laser Modes in Fabry-Pérot Resonators Containing Microspheres
Authors: Steinforth Austin W. , Eden J. Gary
Published: January 2022

Higher-order fractal modes of laser resonators are demonstrated experimentally for the first time. Simulations characterize the fractal behavior of the lowest-loss and higher-order modes of these Fabry-Pérot cavities containing microsphere arrays.
Large Extinction (> 70 dB) RF Notch filter Using Low Brillouin Loss (< 20 dB) With Single Sideband Modulation
Authors: Varun M K , Pant Ravi
Published: January 2022

We present a RF notch filter with >70 dB extinction using single sideband modulation and a small Brillouin loss of <20 dB. A resolution study also performed to demonstrate the effectiveness of the filter.
Few-Cycle Visible Light Generation in a Hollow-Core Fiber
Authors: Piccoli R. , Brown J. M. , Jeong Y. -G. , Rovere A. , Zanotto L. , Gaarde M. B. , Légaré F. , Couairon A. , Travers J. C. , Morandotti R. , Schmidt B. E. , Razzari L.
Published: January 2022

175-fs-long pulses emitted by a commercial Yb-based laser are directly projected into the single-cycle regime at visible frequencies through the nonlinear mixing between spatial modes of a hollow-core fiber, without any post-compression technique.
Histological Discrimination Using Fractal Analysis and Refractive Index Variance
Authors: Ganoza-Quintana J. L. , Fanjul-Vélez F. , Arce-Diego J. L.
Published: January 2022

Histopathology presents artifacts, delays or subjective errors. Digital histology contributes to automation and diagnosis improvement. In this work we employ label-free tissue slices by phase contrast fractal dimension and refractive index variance.
Deep Learning enabled Forward Modeling and Inverse Design of Integrated Nanophotonic Gratings
Authors: Akbar Hussaina Ali , Rehman Anusha , Karim Zeeshan , Usman Ahmad , Asim Syed Hasan
Published: January 2022

We demonstrate deep learning enabled forward modeling and inverse design of integrated silicon nanophotonic grating. Predicted response by the forward modeling and predicted response and geometries by inverse design algorithm are shown with a prediction mean-square-error of the order of 10
−
4.
Enhanced self-injection locking of semiconductor laser to high-Q microresonator
Authors: Galiev R. R. , Kondratiev N. M. , Lobanov V. E. , Bilenko I. A.
Published: January 2022

In this work we theoretically study a scheme of a self-injection locking to a high-Q microresonator with drop-port coupled mirror, in which optical feedback level is optimally adjusted by tuning the drop-port mirror coupling.
Ten Billion Shot Update of NASA’s Global Ecosystem Dynamics Investigation (GEDI) Laser Transmitter Systems
Authors: Stysley Paul , Coyle D. Barry , Poulios Demetrios , Frese Erich , Switzer Robert , Thomes Joe , Blair J. Bryan
Published: January 2022

The Global Ecosystems Dynamics Investigation employs three laser systems delivered by NASA Goddard Space Flight Center. We report on the status of these systems after over 2 years and 10 billion shots in orbit.
Ultrafast Sampling Oscilloscope for Arbitrary Single Photon Waveforms
Authors: Crockett Benjamin , van Howe James , Montaut Nicola , Morandotti Roberto , Azaña José
Published: January 2022

We demonstrate high-speed detection of low-photon waveforms using slow off-the-shelf detectors. Using a detector with a distorted instrument response function spanning > 1 ns, we recover single photon waveforms at a resolution of 60 ps.
An Automated Tool to Analyse 3D Fluorescence Images of Stained Nuclei
Authors: Cuneo Lisa , Baldini Francesca , Castello Marco , Nepita Irene , Piazza Simonluca , Vergani Laura , Diaspro Alberto
Published: January 2022

We present an automatic and parameter-free tool to segment 3D fluorescence image stacks of stained nuclei and to quantify chromatin compaction, exploiting machine learning algorithms combined with statistical analysis.
Calculation of the Phase Noise at Comb-Line Frequencies in a Frequency Comb
Authors: Anjum Ishraq Md , Mahabadi Seyed Ehsan Jamali , Simsek Ergun , Menyuk Curtis R.
Published: January 2022

We calculate the phase noise in a modified uni-traveling carrier photodetector for frequency comb applications. In contrast to a continuous wave, a frequency comb is characterized by a distinct phase noise for each comb line.
Multi-color Driven High-dimensional Bi-photon Quantum Frequency Combs: Versatile Joint Spectral Intensity with Tunable Entropies
Authors: Haldar Raktim , Martínez Alí Angulo , Mahmudlu Hatam , Rübeling Philip , Klitis Charalambos , Sorel Marc , Kues Michael
Published: January 2022

We demonstrate the tunability of Von Neumann entropy of a high-dimensional bi- photon quantum frequency comb possessing multiple antidiagonal correlation lines in the joint spectral intensity in an on-chip microresonator through multi-chromatic excitations.
Azimuthal Force on a Dielectric Particle due to Superpositions of Fundamental Modes of a Silicon Strip Waveguide
Authors: Patton Ryan J. , Reano Ronald M.
Published: January 2022

We compute the azimuthal force on a dielectric particle near a silicon waveguide due to superpositions of fundamental modes. A peak of 75 fN/mW is observed for a 250×250 nm2 core at 1550 nm wavelength.
Temporal study of a Nd3+ doped TZA glass random laser
Authors: Dipold Jessica , Magalhaes Evellyn S. , Bordon Camila D. S. , Kassab Luciana R. P. , Wetter Niklaus U.
Published: January 2022

The temporal behavior of TeO2-ZnO pellets of different Nd concentrations is studied. A shortening of the decay time is observed, indicating random laser behavior for this new laser material.
N00N States Dynamics in Jaynes-Cummings Arrays
Authors: Cruz Adriana , Mirza Imran
Published: January 2022

We analyze the dissipative dynamics of uni-and bi-photon N00N states in Jaynes-Cummings arrays with fiber-coupled many qubit-cavity subsystems. We use quantum state fidelity to track the N00N state transfer from qubits to cavity modes.
Ultrasensitive Terahertz Refractive Index Based Twin-core Flat Photonic Crystal Fiber Sensor
Authors: Aruna Gandhi M. S. , Li Qian
Published: January 2022

The proposed twin-core photonic crystal flat-fiber biosensor achieves maximum sensitivities for cervical cancer cell and breast cancer cells type I, II of 0.8333 THz/RIU, 16.4286 THz/RIU and 0.7857 THz/RIU, respectively.
Demonstration of a universal angular dispersion synthesizer
Authors: Hall Layton A. , Abouraddy Ayman F.
Published: January 2022

We construct a pulsed-beam shaper capable of introducing arbitrary angular dispersion into a pulsed field, and utilize it to synthesize a host of optical fields that have eluded optics to date.
Observation of the Space-Time Talbot Effect
Authors: Hall Layton A. , Yessenov Murat , Ponomarenko Sergey A. , Abouraddy Ayman F.
Published: January 2022

We demonstrate self-imaging in space and time of a discretized spatio-temporal optical field lattice in which the diffraction and dispersion lengths, and thus the spatial and temporal Talbot lengths, are intrinsically equal.
Speckle in BRDF measurements: solid angle considerations
Authors: Chavel Pierre , Labardens Thomas , Simonot Lionel , Hébert Mathieu , Sortais Yvan , Obein Gaël
Published: January 2022

since the bidirectional reflectance distribution function applies to scattering media, it is inherently prone to speckle. Conditions to average out speckle by integration over solid angle both on the illumination side and on the detection side are analyzed.
Study of Depolarization of Partially Coherent and Partially Polarized light through a linear Retarder
Authors: Cely Cristian Eduardo Hernández , Amaris Rafael Ángel Torres
Published: January 2022

We show a model based on the polarization matrix formalism and the theory of statistical distributions on Poincaré Sphere, which describes a controlled depolarization method for a partially polarized beam passing through a rotating retarder.
Implementation of a PoF/RoF-based 5G NR Mobile Fronthaul
Authors: de Souza Letícia Carneiro , Lima Eduardo Saia , Junior Arismar Cerqueira Sodré
Published: January 2022

We report the implementation of a 5G NR mobile fronthaul based on power- over-fiber (PoF) and radio-over-fiber (RoF) technologies. Over 475 mW was delivered to an RoF module at 23.5% efficiency.
On Large Purcell Enhancement of an On-Chip Emitter Trapping System
Authors: Saha Samprity , Hong Chuchuan , Fomra Dhruv , Ndukaife Justus C. , Kinsey Nathaniel
Published: January 2022

We investigate the Purcell enhancement (>500x) and collection efficiency (10%) achievable for an emitter trapped in a hybrid-plasmonic-waveguide based tweezer with the prospect of realizing a compact, on-chip platform for single-photon generation.
Numerical modeling of light-tip interaction for near-field laser ablation application
Authors: Lin Hung-Ju , Douillard Ludovic , Lacour Jean-Luc , Semerok Alexandre , Chartier Frédéric
Published: January 2022

We developed a model based on Boundary-Element-Method to describe the tip-assisted electric field enhancement under laser illumination. The nanometric distribution of enhanced field is at the basis for an interpretation of near-field laser ablation applications.
Spectral reshaping of partial-width Bragg-grating inside SOI core waveguide
Authors: Awad Ehab
Published: January 2022

Novel partial-width entrenched core in few-mode silicon-on-insulator planar waveguide is demonstrated. Core is entrenched with partially filling nano air-gaps. Spectrum is tuned within 1-2µm range. Double-hump spectrum is reshaped in various spectra. © 2021 The Author(s)
Effects of Lossy Chiral Interface on Power Coefficients for Electromagnetic Plane Wave Propagation Across an Achiral/Chiral Boundary
Authors: Ataai Rajab Y. , Chatterjee Monish R. , Jera Elforjani S.
Published: January 2022

In this paper, propagation of an EM wave across an achiral/chiral boundary with dielectric loss within specific chirality bands are examined specific to Fresnel power coefficients. Loss impact on both propagation and evanescence is investigated.
Design and Simulation of Double Quantum Well Vertical Cavity Tunneling Injection Transistor Laser for Technical Characteristics Improvement
Authors: Noorbakhsh Ghazaleh , Kaatuzian Hassan , Namvar Behzad
Published: January 2022

Here, we proposed a Tunnel-Injection graded-base Transistor Laser with double quantum well. We achieved 50% reduction in threshold current, 13.6GHz optical bandwidth enhancement, 0.9 increment in DC-current gain compared to previous reported results.
Seeded Intermodal Four-Wave Mixing in a Few Moded Fiber
Authors: Bolotov Denis , Vandborg Mads Holmark , Rottwitt Karsten , Rishøj Lars Søgaard
Published: January 2022

We demonstrate seeded intermodal four-wave mixing pumped at 1064 nm and enabling frequency conversion from 965-nm to 1187-nm. The spontaneously generated pulses have pulse durations of 150 ps and kilowatts of peak powers.
A Hyperbola Based Analysis of Wave Interference
Authors: Thomas Joseph Ivin
Published: January 2022

In this paper, the conventional analysis of optical wave interference is reformulated using a highly versatile hyperbola theorem. The new analysis so developed is shown to have some remarkable theoretical advantages and practical applications.
Analysing the Oxidation Status of Mustard Oils using Spectroscopic Methods: a Preliminary Study
Authors: Banik Soumyabrata , Sengupta Aditi , Sindhoora K.M. , Chakraborty Ishita , Mahato K. K. , Mazumder Nirmal
Published: January 2022

Oxidation of oils produces many harmful chemicals with unpleasant odour and taste and can severely effect on human health. In this study, various spectroscopic methods were employed to understand how the storage condition and time affects the oxidation of oil.
Analytical polygon hologram calculation using look-up tables and band-limited spectra
Authors: Wang Fan , Shimobaba Tomoyoshi , Kakue Takashi , Ito Tomoyoshi
Published: January 2022

In this study, a polygon-based hologram generation method is proposed by combining the table look-up method, principal component analysis method and frequency- limited band calculation method.
3D-Printed Autofocus Custom-Built Microscope for Extended Field-of-View Imaging of Large Biological Samples
Authors: Silva Alejandro , Alonso Julia R.
Published: January 2022

We propose a low-cost 3D-printed microscope with an electrically focus- tunable lens (ETL) and a motorized XY stage driven by a microcontroller board capable of autofocusing and extending the field-of-view (FOV) for large biological sample imaging.
Visible and NIR Tunable Light Source with High In-band Fluxes
Authors: Ye Xiaohua , Grube William , Gustafson Debbie , Zhu Huiling
Published: January 2022

A visible and NIR tunable light source with fiber coupled output is presented. Highest in- band fluxes as reported reach 3.6mW in average from 400nm to 1000nm, with a narrow FWHM average of 5.9nm.
Random verses improved initial guess on the reconstruction from phase retrieval algorithm
Authors: Gautam Surya Kumar , Naik Dinesh N
Published: January 2022

a comparison study is presented to show the effect on the reconstruction of the phase retrieval algorithm using random initial guess and a region filtered from the autocorrelation as an initial guess (improved guess).
Ray Tracing Reflection Analysis in Anti-spoofing Face Recognition Using Infrared Structure Light
Authors: Sun Shengtao , Tian Yue , Tang Ying , Qi Yang , Wu Ben
Published: January 2022

We demonstrate an analysis method that use ray tracing for anti-spoofing face recognition which discriminate face anomalies. Face images captured in infrared structure light provide spatial structure and reflection pattern for this analysis.
Near-Perfect Noisy NOON State Transfer in a Chain of Coupled Three-Level Atoms
Authors: Aiyejina Abuenameh , Wyke Ethan , Andrews Roger
Published: January 2022

We demonstrate the high-fidelity transfer of a n oisy two-excitation NOON state between the ends of a chain of 5 dipole-coupled three level atoms by engineering the values of the couplings between atoms.
Computational Spectrometer based on Photonic Crystal Cavity and Reconstruction Algorithm
Authors: Sharma Naresh , Kumar Govind , Gupta Shilpi
Published: January 2022

We propose a miniaturized and portable reconstructive spectrometer that uses a planar one- dimensional photonic crystal cavity as a dispersive element and a reconstructive computational algorithm to extract spectral information from spatial patterns.
Higher harmonic and supercontinuum generated by electronic self-phase modulation under extreme ultrafast laser pulses for various states of matter
Authors: Alfano Robert R. , Mazhar Shah Faisal B. , Shi Lingyan
Published: January 2022

A classical electrodynamics theoretical model is presented to explain the Odd Higher Harmonic Generation (HHG) from the electronic response n2 SPM effects in rare gases and condensed matter in contrast to the quantum mechanical model.
Nonlinear spectrum transformation in semiconductor optical amplifiers
Authors: Bednyakova A. , Khudozhitkova D. , Kokhanovskiy A. , Turitsyn S. K.
Published: January 2022

We demonstrated both through numerical modeling and experimentally that optical pulses with appropriate initial chirp can undergo a nonlinear spectral blueshift, opposite to the Raman-induced redshift, when they are amplified by the SOA.
Localization-assisted stimulated Brillouin scattering spectroscopy
Authors: Zanini Giulia , Scarcelli Giuliano
Published: January 2022

Localization theory is here extended to the spectral domain for the design of a stimulated Brillouin scattering spectrometer with 10-fold improved acquisition speed and an order of magnitude improved precision.
Fiber-Based Transceiver Design for Improved Reception in Free-Space Optical Communication Systems
Authors: Želudevičius J. , Dubosas G. , Regelskis K.
Published: January 2022

We investigate fiber-based transceiver design in which fused-fiber combiners are used for routing incident optical signals. Significantly higher total coupling efficiency was registered when using 6-port combiners (70 %) compared to 2-port combiners (20 %).
Label-free interferometric scattering imaging of molecular fluctuation predicts fluorescence nuclear microscope images
Authors: Hsiao Yi-Teng , Tsai Chia-Ni , Wu Tsai-Ying , Tseng Huan-Hsin , Tsao Yu , Hsieh Chia-Lung
Published: January 2022

We demonstrate a computational method to map the nuclear organization of live cells based on a deep-learning approach where the time-varying scattering signal is used to estimate the density of chromatin in the fluorescence image.
Designable light source for high quality ghost imaging
Authors: Zhou Dongxu , Zhang Hongzhi , Zhang Lu , Zhang Guoquan
Published: January 2022

We design a light source with controllable parameters for high-quality ghost images based on Gerchberg-Saxton algorithm. The influence of parameters on image quality is studied. Ghost images with improved spatial resolution and visibility are demonstrated.
Ultra-Broadband Silicon Polarization Splitter-Rotator using Adiabaticity Engineering
Authors: Chung Hung-Ching , Lu Guan-Xun , Tseng Shuo-Yen
Published: January 2022

Multi-wavelength adiabaticity engineering is utilized in optical waveguides to design an ultra-broadband silicon polarization splitter-rotator. A 141μm-long device exhibits excellent performance with >97% transmission and >16 dB extinction ratio over a bandwidth of 300nm.
U-net based isotropic phase retrieval with quantitative differential phase contrast microscopy
Authors: Li An-Cin , Chen Ying-Ju , Huang Hsuan-Ming , Luo Yuan
Published: January 2022

IDPC imaging with a half-circle pupil faces the problem of demanding multiple measurements for isotropic phase retrieval. Here, deep learning method is applied to deal with slow data acquisition process and generate accurate phase from the least number of measurements.
The Effects of Detector Efficiency when Heralding on the Detection of Zero Photons
Authors: Nunn Cory M. , Franson James D. , Pittman Todd B.
Published: January 2022

Reliable detection of zero photons is important for quantum information applications but presents unique experimental challenges. We demonstrate the role of detector efficiency when “heralding on zero” using a modified Hong-Ou-Mandel interferometer.
Manufacture Protocol for the Control of Epsilon-Near-Zero Properties in Indium Tin Oxide Nanolayer at Telecommunication Wavelength
Authors: Sha Yanhua , Wu Jiaye , Chen Jie , Zhang Shengdong , Li Qian
Published: January 2022

We experimentally demonstrate the tuning of the epsilon-near-zero (ENZ) properties in indium tin oxide (ITO) film by direct-current magnetron sputtering, and present a stable method to produce ITO films with ENZ point at telecommunication wavelength.
A design of single photon and squeezing light source in a nanoscale photonic-crystal-plasmonic system
Authors: Shan Lingxiao , Ren Juanjuan , Zhang Qi , Ma Yun , Gong Qihuang , Gu Ying
Published: January 2022

Squeezing light sources need exploring for on-chip devices. A PhC-plasmonic system with a band-edge mode can establish strong coupling. g(2)(0)<0.1 and 0.53 dB degree of squeezing are obtained. Besides, 70% emission can be channeled in PhC waveguide.
DLCNN: A High-Resolution Computer-Generated Hologram Technology Based on Deep Learning
Authors: Xu X. F. , Wang X. W. , Ma T. Y.
Published: January 2022

We proposed a new network structure DLCNN for optical image reconstruction. And applying this structure to the computationally generated holographic problem. This method can obtain higher quality image reconstruction accuracy.
Characterizing Gain Properties of a Yb-doped Silica Transverse Anderson Localizing Fiber
Authors: Bassett Cody , Tuggle Matthew , Ballato John , Mafi Arash
Published: January 2022

A detailed analysis of a novel Yb-doped silica transverse Anderson localizing optical fiber is performed. Comparisons between measurements and theory determine the parasitic attenuation, gain, saturation power, and the number of modes.
Optical Cooling of a Large Core Diameter Yb:SiO2 Fiber to 18K Below Ambient Temperature
Authors: Topper Brian , Peysokhan Mostafa , Albrecht Alexander R. , Flores Angel S. , Kuhn Stefan , Häßner Denny , Hein Sigrun , Hupel Christian , Nold Johannes , Haarlammert Nicoletta , Schreiber Thomas , Sheik-Bahae Mansoor , Mafi Arash
Published: January 2022

We present record cooling of Yb:silica by 18.4(3)K in vacuum and 3.57(7)K in air in an optical fiber. The success is attributed to increased Yb concentration and decreased thermal load from a smaller cladding thickness.
Theoretical Study of Vacuum Ultraviolet Pulse Characterization from Autocorrelation Signals
Authors: Walker Spencer , Reiff Ran , Jaron-Becker Agnieszka , Becker Andreas
Published: January 2022

We present results of a theoretical study on how one can infer the time- dependent amplitude and phase variation of the electric field of a vacuum ultraviolet pulse from autocorrelation ionization measurements.
Modeling of a hybrid planar-channel waveguide configuration for ultra wideband parametric amplification
Authors: Aashna Pragati , Thyagarajan K.
Published: January 2022

We propose a novel hybrid planar-channel waveguide configuration in lithium niobate (LiNbO3) for quasi phase matched adiabatic parametric amplification exhibiting ultra wide bandwidth and complete conversion of pump into signal and idler pair.
Cross Polarization in Gaussian Light Beams
Authors: Khan Sameen Ahmed
Published: January 2022

A formalism of light beam optics including polarization is presented based on an exact matrix-representation of Maxwell’s equations, using quantum methodologies. The paraxial limit of the formalism explains the experimentally observed cross-polarization in laser beams.
Relativistic Mollow spectrum
Authors: Postavaru Octavian , Toma Antonela
Published: January 2022

We present the relativistic power spectrum for the interaction of an x-ray field with an highly charged ion, obtained by solving the time-dependent Dirac equation in a two-level approximation [1]. The phenomenon of splitting of sideband peaks is obtained as a consequence of the introduction in theory of the electronic spin. Also this phenomenon together with the retardation of the electron-photon interaction changes the values of Rabi frequencies. After describing the fluorescence spectrum, we show how it can be used to determine atomic multipole matrix elements.
Saturation effect of THz emission from laser induced plasma in liquid water line
Authors: Chen Yuxuan , He Yuhang , Zhang Yifan , Tian Zhen , Dai Jianming
Published: January 2022

Saturation effect of THz emission from laser induced plasma in liquid water line due to intensity clamping is observed under high pump intensity. This phenomenon is verified by an independent measurement of pulse spectrum broadening.
Modeling Methods and Pulse Interactions in Epsilon-Near-Zero Multilayer
Authors: Huang Chenxingyu , Wu Jiaye , Wang Yuqing , Fu H. Y. , Li Qian
Published: January 2022

We have investigated the epsilon-near-zero optical properties of alternating silver-silica stacked multilayer structure and numerically demonstrated the light-matter interactions of an ultrashort 20-fs pulse at epsilon-near-zero wavelength.
Optimization for dispersive wave conversion efficiency in LiNbO3 waveguide using genetic algorithm
Authors: Wang Zimiao , Ye Feng , Li Qian
Published: January 2022

We present a genetic algorithm that maximizes the conversion efficiency of mid-infrared dispersive wave in a 5-mm-long LiNbO3 waveguide. The optimal dispersive wave will benefit trace gas sensing and Fourier transform infrared spectromicroscopy.
Super-resolution of two unbalanced sources
Authors: Sajia Abdelali , Qian Xiaofeng
Published: January 2022

Estimation of arbitrary separations between two unbalanced point sources is studied by including the spatial property’s entangled partner. Super-resolution is shown to be achievable with high accuracy through finite values of Fisher information.