bluuebunny/crossref_metadata_2025 huggingface dataset:
OPA1 deficiency impairs oxidative metabolism in cycling cells, underlining a translational approach for degenerative diseases
Authors: Millet Aurélie M. C. , Coustham Corentin , Champigny Camille , Merabet Nadege , Botella Marlène , Demeilliers Christine , Devin Anne , Galinier Anne , Belenguer Pascale , Bordeneuve-Guibé Joel , Davezac Noélie
Published: July 2023

Dominant optic atrophy is an optic neuropathy with varying clinical symptoms and progression. A severe disorder is associated with certain OPA1 mutations and includes additional symptoms for >20% of patients. This underscores the consequences of OPA1 mutations in different cellular populations, not only retinal ganglionic cells. We assessed the effects of OPA1 loss of function on oxidative metabolism and antioxidant defences using an RNA-silencing strategy in a human epithelial cell line. We observed a decrease in the mitochondrial respiratory chain complexes, associated with a reduction in aconitase activity related to an increase in reactive oxygen species (ROS) production. In response, the NRF2 (also known as NFE2L2) transcription factor was translocated into the nucleus and upregulated SOD1 and GSTP1. This study highlights the effects of OPA1 deficiency on oxidative metabolism in replicative cells, as already shown in neurons. It underlines a translational process to use cycling cells to circumvent and describe oxidative metabolism. Moreover, it paves the way to predict the evolution of dominant optic atrophy using mathematical models that consider mitochondrial ROS production and their detoxifying pathways.
Who Benefits from State Corporate Tax Cuts? A Local Labor Markets Approach with Heterogeneous Firms: Comment
Authors: Malgouyres Clément , Mayer Thierry , Mazet-Sonilhac Clément
Published: July 2023

Suárez Serrato and Zidar (2016) identify state corporate tax incidence in a spatial equilibrium model with imperfectly mobile firms. Their identification argument rests on comparative statics omitting a channel implied by their model: the link between common determinants of a location’s attractiveness and the average idiosyncratic productivity of firms choosing that location. This compositional margin causes the labor demand elasticity to be independent from the product demand elasticity, impeding the identification of incidence from the four estimated reduced-form effects. Assigning consensual values to the unidentified parameters, we find that the incidence share borne by firm owners is closer to 25 percent than 40 percent. (JEL H22, H25, H32, H71, R23, R51)
A randomized interventional clinical trial assessing the safety and effectiveness of PeaNoc XL tablets in managing joint pain and inflammation in arthritis patients
Authors: Kadanangode Narayanaswam Nandakumar , Caston Eric , Satish Kumar Rajappan Chandra , Vijayakumar Thangavel Mahalingam , Vanangamudi Vishagan Sulur , Pankaj Negi , Sukkur Abdul
Published: July 2023

Background: Globally, alternative medicine is used widely by most patients for several health challenges. To evaluate the effectiveness and safety of PeaNoc XL Tablet in managing pain and inflammation, a randomized clinical trial and systematic study was designed. PeaNoc XL Tablet has been widely utilized for pain and inflammation management, but no previous studies have examined its efficacy and safety.

The aim of this study was to determine the clinical effectiveness and safety profile of PeaNoc XL in patients with arthritis experiencing joint pain and inflammation.

Methods: A randomized, controlled, and an open-label trial was conducted. A total of 155 patients (18 to 60 years) with arthritis were enrolled for participation. Using computer-generated random sequences, the study population was divided into two groups in a randomized manner. Group A received Standard therapy and Group B received Standard therapy with PeaNoc XL Tablet 400mg (two tablets OD after food).

Results: Out of 155 patients, a total of 83 individuals were excluded from the study, leaving 72 patients who were randomly assigned to either Group A (n=36) or Group B (n=36). The administration of PeaNoc XL as an adjunct to standard therapy resulted in a significant reduction in levels of TNF-α (P<0.01), IL-1β (P<0.001), IL-6 (P<0.01), and CRP (P<0.01) in arthritis patients experiencing joint pain and inflammation. Conversely, no notable differences were observed from the baseline in the standard therapy group.

Conclusions: After 12 weeks of supplementation of PeaNoc XL tablets, as an add-on therapy helps in the reduction of pain score, joint stiffness, and physical stiffness.

Trial registration:  CTRI/2022/10/046693.
Repeating Christmas jump in LIBOR
Authors: Mikheev Vikenty , Miheev Serge E.
Published: July 2023

Background: London Interbank Offered Rate (LIBOR) exists since 1986 as a benchmark interest rate.

Methods: Using two-layer linear regression method, we found a pattern of shortterm nature in LIBOR behaviour.

Results: To wit, 2-month LIBOR experiences a jump after Xmas for the last two decades. The direction and size of the jump depend on the data trend on 21 days before Xmas.

Conclusions: The obtained results can be used to build a winning strategy on the Swap Market.
Medical debt during epidemics: A case for resolving the situation in low- and middle-income countries such as Kenya
Authors: Obengo Tom
Published: July 2023

This paper evaluates the problem of medical debt in Kenya during the COVID-19 pandemic. The medical debt problem is compounded during pandemics such as COVID-19 when patients seek treatment and end up in insurmountable debt because illnesses related to the pandemic are not covered by the Kenyan National Health Insurance Fund (NHIF), the public health coverage body under government control. As a result, discharged patients may be detained in hospitals and dead bodies are locked away in mortuaries, until relatives and friends fundraise and clear the bills. Apart from causing vulnerability, fear, and emotional stress among the poor, this practice leads to a growing lack of trust in the healthcare system, with patients deliberately avoiding hospitals whenever they suspect they have COVID-19. The resulting vicious cycle makes healthcare more inaccessible by limiting the choices that people may have.

User fees, which were introduced in all public health facilities by the Kenyan government as part of a World Bank prescription for cost-sharing, normally affect more women than men. Although Kenya has implemented a general waiver system in public hospitals for those who cannot pay their medical bills, the process of obtaining this waiver can be burdensome, demeaning, and dangerous for the health of the patients. This undermines the government’s commitment to the provision of equitable and affordable health care for the citizens.

In this article, the problem of medical debt in Kenya is addressed as a multi-faceted problem drawing on issues of justice and fairness, human dignity, good governance, the interplay between global and local policies, as well as politics and law. It argues that it is in the best interest of Kenya and other African countries to ensure that public health coverage covers pandemics so that the majority poor can afford and access healthcare.
About the Problem of Economic Efficiency of Project Management and Lean Production at Industrial Enterprises (Exampled by Ship Repairing Industry)
Authors: Novikov Aleksey
Published: July 2023

The article is devoted to the project management efficiency problems of industrial enterprises (exampled by ship repairing industry). Positive and negative examples of project management are observed, and also the variants for creating the project offices “from above” (via corporate managing company) and “from below” (in one of the corporate “daughter” companies, followed by the extension of the positive experience to all the corporate companies). The analysis of the influence of the lean manufacturing project office for the economics of one of the shipbuilding companies is made. It is found out that in spite of the project office rapid development, the influence of the projects on the company economics is left minimal due to the cost-based pricing method, whereas the company is not interested in costs reduction. It is offered to form the key parameters of the project management (economic effects, business processes optimization directions) on the base of strategic and operative needs of the company, by using the mathematical models of the Industrial Potential, that would lead to getting rid of the “abstract” corporate key performance indicators and connect the project management measures with operative and strategic management.
Intervenções nas aulas de educação física e a saúde mental de escolares: Estudo de protocolo
Authors: Cunha Gicele de Oliveira Karini da , Hartwig Tiago Wally , Bergmann Gabriel Gustavo
Published: July 2023

A ansiedade e a depressão compõem importantes problemas de saúde mental entre os jovens. O exercício físico tem se mostrado efetivo na prevenção e atenuação desses problemas. No entanto, mais estudos considerando diferentes tipos e contextos de prática são necessários para melhor compreensão dos efeitos do exercício físico na saúde mental desta população. Este artigo descreve o protocolo de um ensaio clínico randomizado que tem como objetivo principal avaliar os efeitos da inserção de exercícios respiratórios diafragmáticos (grupo intervenção 1; GI-1), cardiorrespiratórios e de força (GI-2), e atividades esportivas cooperativas (GI-3) durante aulas de Educação Física (EF) na saúde mental de adolescentes. Participarão do estudo escolares adolescentes (14 a 19 anos) de dois campi do Instituto Federal Sul-rio-grandense (IFSul) randomizados nos três grupos intervenção (GI-1; GI-2; GI-3) e em um grupo comparador (GC). A intervenção terá duração de 12 semanas e acontecerá durante as aulas de EF tendo duas sessões semanais em um dos campi e três no outro. A saúde mental será considerada a partir dos sintomas de ansiedade e depressão. Como desfechos secundários serão analisados o autoconceito, qualidade de vida, falhas cognitivas, indicadores de sono e de aptidão física. Variáveis demográficas, socioeconômicas, antropométricas, clínicas e comportamentais também serão analisadas. As medidas serão realizadas pré e pós-intervenção e os efeitos serão analisados quanto ao tempo, grupos e interação grupos*tempo. As hipóteses são que os grupos intervenção reduzirão os sintomas de ansiedade e depressão comparados ao GC, e que o GI-3 (atividades esportivas cooperativas) apresentará benefícios adicionais à saúde mental.
A Decomposition Algorithm for Single and Multiobjective Integrated Market Selection and Production Planning
Authors: van den Heuvel Wilco , Ağralı Semra , Taşkın Z. Caner
Published: July 2023

We study an integrated market selection and production planning problem. There is a set of markets with deterministic demand, and each market has a certain revenue that is obtained if the market’s demand is satisfied throughout a planning horizon. The demand is satisfied with a production scheme that has a lot-sizing structure. The problem is to decide on which markets’ demand to satisfy and plan the production simultaneously. We consider both single and multiobjective settings. The single objective problem maximizes the profit, whereas the multiobjective problem includes the maximization of the revenue and the minimization of the production cost objectives. We develop a decomposition-based exact solution algorithm for the single objective setting and show how it can be used in a proposed three-phase algorithm for the multiobjective setting. The master problem chooses a subset of markets, and the subproblem calculates an optimal production plan to satisfy the selected markets’ demand. We investigate the subproblem from a cooperative game theory perspective to devise cuts and strengthen them based on lifting. We also propose a set of valid inequalities and preprocessing rules to improve the proposed algorithm. We test the efficacy of our solution method over a suite of problem instances and show that our algorithm substantially decreases solution times for all problem instances.

History: Accepted by Andrea Lodi, Area Editor for Design & Analysis of Algorithms – Discrete.

Funding: This work was supported by TUBITAK [Grant 1059B191801782].
A clinical review of antidepressants, their sexual side-effects, post-SSRI sexual dysfunction, and serotonin syndrome
Authors: Marks Stephen
Published: July 2023

Depression and anxiety are common, with one in six people experiencing symptoms in any given week. Of these people, 8.32 million are prescribed antidepressants. People living with HIV are likely to experience psychiatric disorder, with one in three experiencing depression and anxiety, and being at greater risk of developing post-traumatic stress disorder. Sexual side-effects of psychotropic medication are very common, cause distress, and can persist even after the medication has been withdrawn. Antidepressants are powerful drugs and can have severe interactions with many other substances. This article seeks to raise awareness of sexual side-effects of psychotropic medications and draw attention to ethical issues related to post selective serotonin reuptake inhibitor sexual dysfunction (PSSD). Additional risk factors and interactions between psychotropic medications and recreational drugs are identified. Recommendations are made to improve care and clinical outcomes through the development of therapeutic alliances.
Supporting patients and raising staff awareness of lymphoedema
Authors: Mayall Rachel
Published: July 2023

Rachel Mayall, Lead Lymphoedema Practitioner, Rochdale Care Organisation, Northern Care Alliance ( Rachel.Mayall@nca.nhs.uk ), winner of a Bronze Award in the Chronic Oedema Nurse of the Year category of the BJN Awards 2023
Evaluation of extended-length cannula inserted using ultrasound guidance in patients with difficult IV access
Authors: Smith Emily , Irimia Valentin
Published: July 2023

Historically, gaining peripheral intravenous (IV) access for patients with difficult intravenous access (DIVA) has been problematic and associated with increased complications, central venous access device insertion and reduced patient satisfaction. Consequently, extended-length peripheral intravenous catheters (PIVCs) have been developed, but to date no real-world data exploring their effectiveness with NHS patients has been published. This article reports on the results of introducing extended-length PIVCs, inserted using ultrasound guidance in patients with DIVA by a vascular access team. This began in 2019, across an adult tertiary hospital setting in the NHS with about 750 beds. The specialties at this hospital include, but are not limited to, emergency medicine; head and neck; vascular; diabetes and endocrinology; respiratory; care of the older person; stroke services; gastroenterology; and trauma and orthopaedics. The vascular access team recorded 1485 individual insertions between 2019 to 2022, with a mean dwell time of 6 days, a first attempt success rate of 91%, and a therapy completion rate of 75 and 78% for inpatient and outpatients respectively. Indications included administration of IV fluids, medication, blood products and access for investigations or procedures. Obtaining reliable IV access in patients with DIVA prevents treatment delays, cancelled or delayed procedures, both of which benefit patients and the healthcare organisation. The data presented in this study support the use of extended-length PIVCs in patients with DIVA and has led to the development of new referral pathways.
Ultrasound-guided PIVC insertion: a randomised controlled trial protocol
Authors: Kleidon Tricia M , Schults Jessica , Rickard Claire , Ullman Amanda J
Published: July 2023

Ultrasound-guided insertion of peripheral intravenous catheters (PIVCs) is an alternative to traditional anatomical landmark-based insertion. However, data on its performance in paediatric patients of varying levels of difficult intravenous access are limited. The researchers hypothesise that ultrasound-guided PIVC insertion will increase first-attempt success compared with landmark technique. This randomised, parallel-group, single-centre, superiority trial commenced recruiting in July 2021, including hospitalised children (aged 0 (>37 weeks gestation) to 18 years) requiring a PIVC. It will recruit 180 children, stratified by degree of perceived difficulty, and centrally randomised into two groups (ratio 1:1). The primary outcome is first-attempt PIVC insertion success. Secondary outcomes include total number of PIVC insertion attempts, PIVC insertion failure, post-insertion complications, dwell time, patient/parent satisfaction, and healthcare costs. The current study will inform the superiority of ultrasound-guided PIVC insertion in comparison with landmark technique. Adoption by healthcare facilities might improve patient outcomes and decrease healthcare costs.
Precise beam-forming from integrated optics for trapped-ion addressing
Authors: Beck Gillenhaal J. , Mehta Karan K. , Home Jonathan P.
Published: July 2023

We present a design methodology for waveguide-to-free-space grating outcouplers enabling flexible emission angles and unprecedented precision in transverse focusing. We demonstrate its capabilities with micron-scale focusing of fundamental and higher-order modes, including Laguerre-Gaussian “vortex” beams.
φ-OTDR for Low-Noise Distributed Seismic Sensing
Authors: Rossi L. , Cheng L. K. , De Jong W. , Jansen R. , Bolognini G.
Published: July 2023

A low-noise φ-OTDR system employing 2-stage preamplification is employed as a distributed acoustic sensor in a survey well in Cottessen, reaching strain noise levels below 1 n for a 10 kHz sampling rate.
High-Performance Sub-Wavelength Grating Assisted Compact WDM/MDM Hybrid (De)Multiplexer
Authors: Mohammed Zakriya , Paredes Bruna , Rasras Mahmoud
Published: July 2023

A compact (70 μm) hybrid device that can multiplex two modes, TE0 and TE1, and two wavelengths, 1550 and 1310 nm is demonstrated. Experimental results exhibit an insertion-loss of 1.5 dB and crosstalk < 18 dB.
Aluminum Nitride Nanophotonic Phased Array on an 8-inch Silicon Wafer
Authors: Li Nanxi , Lim Leh Woon , Xue Jin , Ho Chong Pei , Zhu Shiyang , Fu Yuan Hsing , Lee Lennon Y. T.
Published: July 2023

A nanophotonic phased array is demonstrated on aluminum nitride photonics platform developed on an 8-inch silicon wafer. A beam spot at 1550 nm is clearly observed. Total power loss of 11.4 dB is also reported.
Deployment-Oriented Classical/Quantum coexistence in X-haul fiber link for B5G Networks
Authors: Ntanos Argiris , Zavitsanos Dimitris , Stathis Aristeidis , Giannoulis Giannis , Avramopoulos Hercules
Published: July 2023

Coexistence of weak coherent pulses and intense light is experimentally demonstrated in a practical 5G X-haul scenario. Acceptable QBER measurements were obtained over 5 km fiber transmission by optimizing the parameters of single-photon sender/receiver stations.
Ultrafast Nanofabrication of Large-scale Indium Tin Oxide (ITO) Optical Devices
Authors: Wenqi Ouyang , Wang Manshi , Chen Shih-Chi
Published: July 2023

The ITO film patterning rate is largely limited by traditional single-point scanning. In this work, we used a DMD-based multi-focus nanofabrication system, which realized high-speed flexible large-scale ITO surface patterning to manufacture optical devices.
Optical Fiber Attachment with Displacement to Bend Transducer
Authors: Yoshida Takatoshi , Shirahata Takuma , Yamaguchi Naoki , Yamashita Shinji , Yun Set Sze
Published: July 2023

We propose optical fiber attachment with displacement to bend transducers towards mechanical sensing applications exploiting bend loss. Our prototype in 18 x 8 x 5 mm is successfully reported to convert 1.0 mm displacement into 31 dB bending loss.
Development of a Compact Measurement System of the Flow Rate of Cerebrospinal Fluid in a Shunt Tube for Hydrocephalus Using a Laser Diode
Authors: Kikuchi Shunki , Aihara Yasuo , Shoji Ichiro
Published: July 2023

We developed a compact system for measuring the flow rate of cerebrospinal fluid in a shunt tube using the laser-two-focus velocimeter with air lumps injected. The range of 3 to 60 ml/h was successfully measured.
Broadband Heterogeneous Silicon-Nitride Photonics
Authors: Komljenovic Tin , Tran Minh , Zhang Zeyu , Shen Boqiang , Malik Aditya , Lee Woonghee , Kim Glenn , Asawa Kaustubh , Zhang Chong
Published: July 2023

We present some recent results related to extending the wavelength range of heterogeneous silicon nitride photonic platform by integrating indium-phosphide and gallium-arsenide based active components in a wafer scale process.
240 Gbps Quantum Random Number Generator with Photonic Integrated Chip
Authors: Ng Si Qi , Zhang Gong , Wang Chao , Lim Charles
Published: July 2023

A pure resistor is used as a transimpedance device in this work to maximize the operating bandwidth of an on-chip integrated homodyne setup, resulting in a 240 GBits/s quantum random number generator.
Complementary Raman and IR spectroscopies for Rapid Diagnosis of Neonatal Respiratory Distress Syndrome
Authors: Veluthandath Aneesh V. , Ahmed Waseem , Madsen Jens , Clark Howard W. , Postle Anthony D. , Wilkinson James S. , Murugan Ganapathy Senthil
Published: July 2023

Aqueous lipid solutions were analyzed by mid-IR and Raman spectroscopies to establish a diagnosis approach for neonatal respiratory distress syndrome. We show the ability to prediet lipid ratios around the diagnostic cutoff of 2.2.
Ground-based Sounding of Hydrogen Fluoride (HF) as a Proxy for Stratospheric Methane (CH4)
Authors: Bomse David. S. , Gomez Anthony L. , Miller J. Houston , Flores Monica F.
Published: July 2023

Full atmospheric column measurements of methane (CH4) are complicated by concentration decreases above the tropopause due to CH4 reaction with F atoms. We offer a practical method for using HF as a CH4 surrogate.
Investigation of the Optical Trapping Properties of Microplastics
Authors: Kazemi Noorulhoda , Truong Mimi , Nascak Viktor , Bezryadina Anna
Published: July 2023

As microplastics in the environment rise, it becomes increasingly important to understand their consequences on living species. We classify the optical trapping properties of various lab-made microplastics in order to characterize microplastics found in nature.
Fano resonant, bi-directional colorimetric sensor with spectral line-shape control for sensitive chromatic response
Authors: Ko Joo Hwan , Yoo Young Jin , Park Jin-Hwi , Jeon Hae-Gon , Song Young Min
Published: July 2023

We present a bi-directional Fano resonator, which is capable of spectral shape control by adjusting the continuum state. By addressing the reflection phase, we demonstrate sensitive-chromatic response for color control with viral-particle sensing ability (SARS-COV-2).
High-Resolution Spectroscopy in the Long-Wavelength Mid-Infrared Region
Authors: Elkhazraji Ali , Shakfa Mohammad Khaled , Lamperti Marco , Hakimov Khaiyom , Djebbi Khalil , Gotti Riccardo , Gatti Davide , Marangoni Marco , Farooq Aamir
Published: July 2023

An in-house built difference-frequency-generation laser is used to probe the long-wave mid-infrared region. Wide tunability (11.58 - 15 μm) and high resolution of the developed system are showcased in molecular fingerprinting of several species.
Multispectral snapshot high-speed imaging using periodic shadowing multiplexing
Authors: Andersson David , Kristensson Elias
Published: July 2023

We present a light-efficient multiplexed imaging setup that can be used with any monochrome camera and combine it with a high-speed camera to achieve high-speed multispectral imaging with no loss in capture rate or FOV.
Generation and propagation of an OAM-carrying beamlet array through an underwater turbulent environment
Authors: Wiley Jaxon , Free Justin , Robertson Evan , Miller J. Keith , Watkins Richard J. , Johnson Eric G.
Published: July 2023

Gaussian beamlets are generated simultaneously around a perfect vortex envelope, each with a unique frequency corresponding to its specific location around the envelope with an overall OAM encoded across the array. These beams are propagated through a turbulent underwater environment, providing information between the interaction of these beams with this environment to understand the spatial and temporal properties of the water channel.
Femtosecond fiber delivery for industrial applications
Authors: Guillemet S. , Basin F. , Chabrerie J. , Mottay E. , Hönninger C.
Published: July 2023

We report on a femtosecond fiber delivery system for industrial applications. The delivery system is coupled to a Satsuma industrial femtosecond laser with average output power of 20W and 60µJ pulse energy and polarisation control.
A Maskless Lithography System Based on Digital Micromirror Devices (DMD) and Metalens Arrays
Authors: Luo Shiqi , Weber Kaitrin , Guo Haiyun , Zhu Wenqi , Agrawal Amit , Agha Imad
Published: July 2023

In a novel maskless lithography system, a metalens array focuses the light from assigned micromirrors to expose the photoresist. Arbitrary high-resolution patterning on the photoresist can be achieved.
Precision spectral line-resolution to classify greenhouse gas species in broadband mid-infrared sensing
Authors: Al-Alexis  , Juracka Zayna , Juracka Zakaria , Khan Amir
Published: July 2023

We present a novel methodology to classify greenhouse gas species by investigating the structural complexity of broadband overlapping molecular lines in the spectral region of 7.0 μm to 8.0 μm. The structural information is classified by resolving peaks and zero crossings by adaptive learning methods.
Projection-slice four-wave-mixing spectroscopy using frequency combs
Authors: Lomsadze Bachana , Weight Skyler , Clark Peyton
Published: July 2023

We demonstrate projection-slice spectroscopy using frequency combs that enables rapid measurements of couplings between sample’s excited states. This information is not easily accessible with other one-dimensional methods and is critical for imaging and chemical sensing.
Multispectral imaging using a diffractive network
Authors: Mengu Deniz , Tabassum Anika , Jarrahi Mona , Ozcan Aydogan
Published: July 2023

We present and experimentally demonstrate diffractive network-based snapshot multispectral imaging, and perform coherent imaging over a broad spectrum while simultaneously routing distinct spectral bands onto unique sets of pixels to form virtual filter arrays.
Velocity Measurement through Hilbert Phase Subdivision
Authors: Xu Jia-Yi , Guan Zhi-Ping , Kang Jhih-Jia , Hsu Shih-Hsiang
Published: July 2023

Compared with the zero-crossing resampling, the Hilbert transform can resample the signal to compensate for the nonlinear frequency sweeping phenomenon and precisely characterize a velocity of 200 mm/s with its standard deviation of 0.749 mm/s.
Continuous Time-Frequency Analysis of Ultra-broadband Optical Waveforms by Algorithmic Unwrapping
Authors: Crockett Benjamin , Rowe Connor M.L. , Azaña José
Published: July 2023

We demonstrate a spectral unwrapping algorithm for electro-optic time-lens spectrograms enabling the analysis of ultra-broadband signals. This allows the 56 GHz instantaneous bandwidth to be continuously shifted to analyze waveforms over more than 550 GHz.
Rethinking Frequency Combs for Infrared Spectroscopy
Authors: Cappelli F. , Gabrielli T. , Consolino L. , Sorgi A. , Borri S. , Roati G. , Scazza F. , Trombettoni A. , Smerzi A. , De Rosa M. , Ricciardi I. , De Natale P.
Published: July 2023

Frequency combs (FC) underwent a significant miniaturization since the Ti:Sa passively mode-locked laser was introduced. Nowadays, a full FC re-design, e.g. based on ultracold-atoms simulation, can provide access to genuine quantum radiation.
Fast Phase Retrieval: Unique and Stable Complex Object Recovery in O(NLogN) Time
Authors: Brabec Cole , Mills Sivan Trajtenberg , ElKabbash Mohamed , Christen Ian , Englund Dirk
Published: July 2023

We present a novel Phase Retrieval algorithm that is able to uniquely recover a complex object from its noise-corrupted Fourier magnitudes in an arbitrary number of dimensions while running in O(N Log N) time.
Direct Down-sampled Full-field Coherence Scanning Interferometry Using a Femtosecond Laser
Authors: Shi Liheng , Zhang Jinxu , Wu Guanhao
Published: July 2023

A down-sampled coherence scanning interferometer is realized by using a repetition frequency scanning femtosecond laser. With the fast stepwise scanning mechanism, it can realize full-field three-dimensional measurement with high signal-to-noise ratio in a few frames.
Synchronization of Pulsating Optical Soliton Molecules
Authors: Grelu Philippe , Song Youjian , Zou Defeng , Gat Omri , Coillet Aurélien , Wang Zhiqiang
Published: July 2023

We experimentally demonstrate the synchronization of regularly vibrating soliton molecules by means of an injected modulated signal. We also unveil the existence of chaotic intramolecular vibrations, to which we successfully apply a similar control strategy.
Line Positions and Intensities of 12CH3I around 2971 cm1 from Frequency Comb Fourier Transform Spectroscopy
Authors: Sadiek Ibrahim , Hjältén Adrian , Foltynowicz Aleksandra
Published: July 2023

We use the high-resolution spectrum of 12CH3I measured using a comb-based Fourier transform spectrometer to extend line assignments to the 2971 cm-1 region and introduce line positions and intensities of the v1 and v3+v1-v3 bands.
5G NR Fiber-Wireless Systems with Dual-Polarization Scheme and Single-Carrier Optical Modulation
Authors: Huang Hsu-Hung , Peng Yu-En , Lin Yu-Shen , Fan Wei-Cheng , Chen Yen-Xiang , Lu Hai-Han
Published: July 2023

A 5G NR fiber-wireless system with dual-polarization scheme and single-carrier optical modulation is successfully constructed. It is a potential one for 5G NR communication towards MMW and sub-THz band with high and flexible transmission capacity.
Terahertz Imaging Through Fog
Authors: Heligman Daniel , Spencer Zachary R. , Mendis Rajind
Published: July 2023

We experimentally demonstrate that broadband THz imaging can provide virtually unimpaired visibility through dense fog that would otherwise result in zero visibility under conventional optical imaging.
Time-Domain Terahertz Video Captured with a Plasmonic Photoconductive Focal-Plane Array
Authors: Li Xurong , Mengu Deniz , Ozcan Aydogan , Jarrahi Mona
Published: July 2023

We demonstrate a time-domain terahertz video captured at 16 fps using a plasmonic photoconductive terahertz focal-plane array that provides hyperspectral and spatial amplitude and phase information of the imaged object simultaneously.
Sub 125-fs mJ-level Yb:CALYO Diode Pumped Regenerative Amplifier
Authors: Petrov Lyuben S. , Georgiev Kaloyan , Velkov Dimitar , Trifonov Anton , Xu Xiaodong , Xu Jun , Buchvarov Ivan
Published: July 2023

We report a 1 kHz, Yb-based regenerative amplifier providing the ultimate 122 fs output pulses with 2.3 mJ of energy at 1039 nm, developed using a single disordered Yb:crystal-Yb:CaYAlO4 (Yb:CALYO).
Inverse Design of an Efficient, Purcell-enhanced, On-chip Path-entangled Photon-pair Source Based on Single Quantum Dots
Authors: Eshbaugh William , Melo Emerson G. , Chanana Ashish , Song Junyeob , da Silva Saimon F. C. , Rastelli Armando , Addamane Sadhvikas , Srinivasan Kartik , Flagg Edward B. , Davanco Marcelo
Published: July 2023

We use inverse design to develop an optimized nanophotonic geometry for efficient, Purcell-enhanced, waveguide-coupled, path-entangled photon pair sources based on single embedded quantum dots.
Burst Consecutive Errors Suppression with Precoding for MLSE Based 201-Gb/s IM-DD Transmission Systems
Authors: Zhou Jiahao , Zhang Jing , Zhao Xue , Wang Chenye , Hu Shaohua , Xu Bo , Qiu Kun
Published: July 2023

We propose and experimentally demonstrate that the precoding can break consecutive errors from MLSE in a 201-Gb/s PAM-8 IM-DD system. We find the maximum length of burst consecutive errors is reduced from 16 to 2.
Effect of O/E Front-end Frequency Response on Carrier-less Phase Retrieval Receiver and its Compensation
Authors: Gao Qi , Huang Hanzi , Chen Haoshuo , Fontaine Nicolas K. , Ryf Roland , Song Yingxiong
Published: July 2023

We investigate the effect of the opto-electronic front-end frequency response on carrier-less phase retrieval receivers. System performance improvement is verified by employing an adaptive equalizer preceding a modified Gerchberg–Saxton phase retrieval algorithm.
Towards Continuous Fiber Birefringence Compensation with Single-Photon-Level Light
Authors: Shi Yicheng , Gerrits Thomas , Slattery Oliver
Published: July 2023

We propose a method for continuously compensating for the polarization state change of photons propagating in fibers. This technique operates at a single-photon-level intensity and therefore imposes minimal noise on the quantum channel.
Photonic Spatial-Euler Ising Machine for Solving 20000-vertex Max-cut Problem
Authors: Ye Xin , Zhang Wenjia , Wang Shaomeng , Yang Xiaoxuan , Du Jiangbing , He Zuyuan
Published: July 2023

We propose a novel quadrature photonic spatial-Euler Ising machine to realize flexible spin-interaction configuration and spin-flip in a single SLM. A 20000-vertex max-cut problem is experimentally solved, showing 80% improvement compared to simulation results and 49% over heuristic algorithm.
Mid-Infrared Quantum Scanning Microscopy with Visible Light
Authors: León-Torres Josué Ricardo , Fuenzalida Jorge , Gilaberte Marta , Töpfer Sebastian , Gräfe Markus
Published: July 2023

A label-free quantum scanning imaging system is presented, capable of detecting in the visible regime, while illuminating with undetected light in the Mid-IR region by exploiting the quantum correlations of photon-pairs.
High-dimensional mode-entangled photon pairs from a tapered silicon waveguide
Authors: Koefoed Jacob G. , Müller Ronny R. , Rottwitt Karsten
Published: July 2023

We present a proposal for creating high-dimensional entangled photon pairs in a tapered silicon waveguide through intermodal four-wave mixing. We show that 4D Bell states can be obtained with 98 % fidelity.
Intra-Cavity Frequency-Doubled VECSEL for Narrow Linewidth Rydberg EIT Spectroscopy
Authors: Hill Joshua C. , Holland William K. , Kunz Paul D. , Cox Kevin C. , Penttinen Jussi-Pekka , Kantola Emmi , Meyer David H.
Published: July 2023

We characterize a VECSEL with intra-cavity frequency conversion and use it to demonstrate 3.5 MHz FWHM Rydberg spectroscopy. The laser emits 690 mW at λ = 475 nm and we measure a pre-doubled linewidth of 2π × 23(2) kHz.
Optical Resonance Conditions of Coupled Cavity VCSELs
Authors: Khurana Arjun , Wong Joshua J. , Thomas Varghese A. , Tatum Jim A. , Graham Luke A. , Guenter James , Choquette Kent D. , Ralph Stephen E.
Published: July 2023

DC measurements of differential resistance are used to identify resonance conditions in coherent 2x1 VCSEL arrays. Enhancement of small-signal modulation bandwidth and RIN and self-oscillation is demonstrated.
Demonstration of High Performance Single-Mode Surface-Emitting DFB Lasers
Authors: Liu Can , Li Nanguo , Zhang Pengfei , Xiang Minwen , Tang Bao , Lu Qiaoyin , Donegan John F. , Guo Weihua
Published: July 2023

We present a novel single-mode surface-emitting DFB laser based on surface gratings. The fabricated laser demonstrated the threshold current of about 2mA, SMSR >40dB, relaxation oscillation frequency ~17GHz, and divergence angle of 26×°21°.
An Economical Single-Pulse Picker without Nonlinear Effect and Dispersion
Authors: Hu Chen-Wei , Wen Yu-Chieh , Chen Hung-Wen
Published: July 2023

A robust single-shot pulse picker without dispersion, nonlinear effect and optical wavelength limitation is presented and applied to a commercial high-energy femtosecond laser with a 12-mm laser beam diameter and pulse energy > 2 mJ.
Silicon Oxynitride Organic Hybrid Concentric Microrings Lasers
Authors: Kwan Ching Chi , Poon Andrew W.
Published: July 2023

We demonstrate silicon oxynitride organic hybrid concentric microrings lasers. We measure lasing near the microresonator edge and center from a radial-grating-ring-embedded structure using a fiber tip.
Nanophotonic Control of High Energy Light-Materials Interaction
Authors: Shafirin Pavel , Feng Pengli , Prasad Druga , Davoyan Artur
Published: July 2023

We study experimentally and theoretically the effects of intense laser beams interaction with metallic nanostructures in the ablation regime. Specifically, at high laser beam fluences we create ablation plasmas and study their spatio-temporal evolution as a function of the underlying metallic nanostructure. Our work hints the possibility of controlling ablation plasmas with properly selected systems structured at the nanoscale, offering new opportunities for a range of applications from compact accelerators and light sources to advanced manufacturing to plasma medicine.
Cascaded Stable Radio Frequency Dissemination over 960-km Fiber Link
Authors: Gao Hao , Zhao Zhuoze , Cheng Jiahui , Zhang Jie , Zhao Baodong , Chen Ziyang , Luo Bin , Yu Song , Guo Hong
Published: July 2023

We demonstrate a cascaded stable frequency dissemination over a 960-km fiber link and compare the frequency instability of different connectivity modes to explore the optimal cascaded mode for long-diatance frequency transmission.
Stabilization of SiN Kerr Solitons for the calibration of astronomical spectrographs
Authors: Kordts Arne , Wang Rui Ning , Baldoni Ignacio , Anderson Miles H. , Siddharth Anat , Ji Xinru , Stroganov Anton , Steinmetz Tilo , Geiselmann Michael , Kippenberg Tobias J. , Holzwarth Ronald
Published: July 2023

We demonstrate a stabilization scheme for dissipative Kerr solitons in SiN-resonators achieving high comb stability and long-term operation. Measuring 10Hz level absolute Kerr comb line stability (at 1 second) close to the pump, resulting in kHz level stability in the spectral domain of NIR astronomical spectrographs.
Toward Optical Authentication with Laser-induced Periodic Surface Structures on Metals
Authors: Hwang Taek Yong , Cho Jongweon , Kim Yong-dae , Park Tae Hoon , Kang Jeongjin , Lee Byounghwak
Published: July 2023

By constructing structurally colorized images on metals with femtosecond laser-induced periodic structures (fs-LIPSSs), we demonstrate the color variations of fs-LIPSSs with a broad angular range of illumination incidence can be used for optical authentication.
Real-Time Observation of the Buildup Dynamics of Spatiotemporal Mode-Locking in Spatial Domain
Authors: Liu Hengyu , Kong Lili , Zhang Xiaoguang , Xiao Xiaosheng
Published: July 2023

The beam profile dynamics in the buildup of spatiotemporal mode-locked lasers are real-time observed, by use of an array of spatial samplings. The observations reveal the complex spatiotemporal dynamics of the self-organization of high-dimensional soliton.
Mirror-Enabled Tuning of Mid-Infrared Light Scattering by Dielectric Optical Resonators
Authors: Yao Kan , Fang Jie , Zheng Yuebing
Published: July 2023

Optically resonant particles with novel scattering behaviors are essential for developing nanophotonic devices. Here, we show that the multipolar Mie scattering of silicon microspheres can be modified by placing them on different reflective substrates.
Taming mid-IR resonances with naturally hyperbolic hBN
Authors: Ling Haonan , Nourbakhsh Milad , Whiteside Vincent R. , Tischler Joseph G. , Davoyan Artur R.
Published: July 2023

We study theoretically and experimentally light interaction with naturally hyperbolic material, hexagonal boron nitride, in the vicinity of TO phonon polariton resonances and find multiple strong resonances can be sustained across a broad wavelength band.
Photon-Induced Near-Field Interaction in Ultrafast Point-Projection Electron Microscopy
Authors: Wöste Andreas , Hergert Germann , Silies Martin , Wang Dong , Groß Petra , Lienau Christoph
Published: July 2023

We report the first study of ultrafast, slow (<100 eV) free electron wavepackets with optical near fields. This interaction is probed in a point-projection-microscope with 50fs temporal resolution using strongly localized fields around a nano-antenna.
Parity-Phase conjugation (PPC) and power eigenchannels in non-Hermitian fibers
Authors: Makris K. G. , Psaltis D.
Published: July 2023

By introducing the concepts of Parity-Phase conjugation and power eigenchannels, we show that perfect phase conjugation is possible in a single non-Hermitian multimode fiber, and determine the optimal initial conditions for maximum amplification.
Artificial-Intelligence Empowered Universal Metrology Optical Camera
Authors: Burguete-Lopez Arturo , Makarenko Maksim , Wang Qizhou , Getman Fedor , Fratalocchi Andrea
Published: July 2023

We introduce a metrology platform that employs artificial intelligence in hardware through optical metasurfaces. We experimentally demonstrate the measurement of thin film thickness and refractive index maps with nanometer accuracy using this platform.
Non-Invasive Probing of Time-Dependent Ion-Distribution Profile in Light-Emitting Electrochemical Cells by An Advanced Confocal Microscope
Authors: Tseng Wei-Shiuan , Hsieh Chi-Sheng , Cho Sheng-Yun , Chan Ming-Che , Su Hai-Ching
Published: July 2023

Herein, we propose a pure optical design studying the spatial ion-distribution of organic films in light-emitting electrochemical cells, which can be further used to observe numerous ion-distributions inside organic/inorganic materials, Li-ion batteries, or micro-fluid channels.
Laser-pumped Rb clock for the space sector
Authors: Gozzelino M. , Micalizio S. , Calosso C.E. , Levi F.
Published: July 2023

We report the recent characterization of a Rb microwave clock based on pulsed laser pumping and detection. The laser pulses were generated by means of a mixed analog-digital controller that stabilizes the pulses amplitude and reduces the laser intensity noise (RIN). The physics package was developed by Leonardo S.p.A. using space-graded components, weighting less than 4 kg and occupying only a 4-liters volume. State-of-the-art short- and mid-term stability is obtained with this system, reaching σy(40000s) = 5 × 10-16 for a 200000 s run.
Optical Phase Noise and Polarization Fluctuation Measurement with Delay Interferometer
Authors: Ryu Shiro
Published: July 2023

In this paper, we report experimental results that a delay interferometer can measure the signal light's optical phase noise and polarization fluctuation in the single-mode fibers with reasonable accuracy.
Fluctuations of scattered intensity reveal shape information under structured illumination
Authors: Dawda Shubham , Shen Zhean , Dogariu Aristide
Published: July 2023

We show that space-polarization structured fields provide means for tuning the sensitivity to particles anisotropy. The model is demonstrated experimentally using a novel technique for enforcing and controlling non-Gaussian scattering regimes.
Experimental Demonstration of Learning-Based Shack- Hartmann Wavefront Reconstruction
Authors: Dave Harshil , Watnik Abbie T.
Published: July 2023

This abstract describes experimental results of a Shack-Hartmann based neural network (ISNet) for turbulent wavefront reconstruction. After transfer learning ISNet from simulated data to experimental data, results show improved wavefront reconstruction compared to Shack-Hartmann reconstruction.
Spin-waves propagation as a basis for adaptive magnonic networks
Authors: Raskhodchikov Dmitrii , Bensmann Jannis , Nikolaev Kirill , Lomonte Emma , Bratschitsch Rudolf , Demokritov Sergej , Demidov V.E. , Pernice W.H.P.
Published: July 2023

We present the experimental propagation of spin waves. Varying the excitation parameters, we can create basis for the implementation of nano-scale magnonic networks to be used for complex non-traditional data-processing schemes, including neuromorphic computing.
Analytical Models for QoT Estimations in Super-C and Super-C + L Bands Optical Transmission Systems
Authors: Yan Baoluo , Sun Yijun , Zhou Ziwen , Liu Hong , Wang Hongya , Huan Chen , Zhao Zhiyong , Feng Lipeng , Zhang Anxu , Feng Zhenhua , Shi Hu
Published: July 2023

We propose a novel physical model-based QoT estimation with achieved OSNR estimation error ≤ 1.5 dB in primary paths and OSNR prediction error ≤ 1.76 dB in unestablished lightpaths for both super-C bands and super-C+L bands for the first time.
Cryogenic Visible-to-Infrared Quantum Interface in a Lithium Niobate Photonic Circuit
Authors: Qi Luke , Stokowski Hubert S. , McKenna Timothy P. , Herrmann Jason , Park Taewon , Hwang Alexander Y. , Ansari Vahid , Fejer Martin M. , Vučković Jelena , Safavi-Naeini Amir H.
Published: July 2023

We present our progress on cryogenic frequency conversion from visible to telecom band based on thin-film lithium niobate photonics.
White Light Generation and Few Cycle Pulse Compression in Cascaded Multipass Cells
Authors: Goncharov Semyon , Fritsch Kilian , Pronin Oleg
Published: July 2023

We report supercontinuum generation and pulse compression in two stacked multipass cells based on dielectric mirrors. The 230 fs pulses at 1 MHz containing 12 µJ were compressed down to 7 fs, corresponding to 1.0 GW peak power.
Beyond 2D imaging with Sparse Spatiotemporal Terahertz fields
Authors: Olivieri Luana , Cecconi Vittorio , Peters Luke , Totero Gongora Juan S. , Cutrona Antonio , Pasquazi Alessia , Peccianti Marco
Published: July 2023

Terahertz time-domain imaging aims at reconstructing the complete electromagnetic morphology. We elaborate our theoretical-experimental route to exploit sparse near-field spatio-temporal illumination to enable three-dimensional microscopy.
Heavy metal water pollution sensor based on Green Fluorescent Protein
Authors: Kasztelanic R. , Olszewski M. , Buczynski R.
Published: July 2023

In this study, the possibility of monitoring heavy metal pollution in water using Green Fluorescent Protein was analyzed. Two measurement systems based on glass capillary and fluorescence signal fading measurements were considered and optimized.
Mode Expansion Tapers via Inverse Design
Authors: Morgan Rachel , Cahoy Kerri , Callahan Patrick , Juodawlkis Paul , Kharas Dave , Mahony Thomas , Maxson Ryan , Medeiros Alexander , Plant Jason , West Gavin , Swint Reuel , Chiaverini John , McConnell Robert , Sorace-Agaskar Cheryl
Published: July 2023

Compact, low-loss mode-expansion tapers for red light are demonstrated. Inverse design methods enable 50 µm long tapers from single-mode to 8- and 18 µm wide waveguides with measured losses of 0.05 and 1.05 dB/taper respectively.
Performance-boosted N-polar AlGaN deep ultraviolet light-emitting diodes by a top tunnel junction
Authors: Xiao Shudan , Yu Huabin , Jia Hongfeng , Wang Danhao , Sun Haiding
Published: July 2023

An N-polar AlGaN-based DUV LED incorporating a tunnel junction, named N-TJ-LED, was proposed. Compared with the regular N-polar LEDs, the N-TJ-LEDs exhibited enhanced internal quantum efficiency, higher light output power, and dramatically reduced turn-on voltage.
Breakdown of the Einstein relation in 1D excitonic guides
Authors: Li Zidong , Florian Matthias , Datta Kanak , Jiang Zhaohan , Borsch Markus , Kira Mackillo , Deotare Parag B.
Published: July 2023

Drift-diffusion dynamics of a 1D excitonic guide is investigated at room temperature. We demonstrate an unexpected and massive deviation from the Einstein relation and correlate it with the exciton capture processes at defects in tungsten diselenide monolayer.
Structural and optical characterization of nanometer sized MoS2/graphene heterostructures for potential use in optoelectronic devices
Authors: Jadriško Valentino , Radatović Borna , Pielić Borna , Gadermaier Christoph , Kralj Marko , Vujičić Nataša
Published: July 2023

We show growth of heterostructures on Ir(111) crystal and subsequent transfer to a Si wafer. This remedies substrate constraints imposed by MBE and allows to harness its advantages for applications in (opto)electronics and quantum technology.
Integrated Programmable Microwave Photonic Bandpass Filter with Symmetric Rejection
Authors: Velamuri Ashitosh , Das Bijoy Krishna
Published: July 2023

We propose an integrated optical design of cascaded microring resonators to achieve tunable microwave bandpass filter w ith a p rogrammable b andwidth o f 500-1100MHz and symmetrical rejection of 50dB at ±5GHz. A proof-of-concept experimental result is presented.