bluuebunny/crossref_metadata_2025 huggingface dataset:
Controlling Material Properties for Enhanced Photonic Functionalities: Tuning Silicon Metasurfaces
Authors: Bosomtwi Dominic , Raney Neal , Islam Md Sakibul , Holzer Aaron , Babicheva Viktoriia E.
Published: December 2023

We investigate “diatomic” metasurface facilitating multimode coupling and bound states in the continuum, resulting in narrow Fano resonances. Control of nanoan-tenna dimensions enables generalized Kerker effect, and improved silicon quality results in enhanced photonic functionalities.
Speckle-learned Demultiplexing of Intensity Degenerate Laguerre Gaussian Beams
Authors: Das Trishita , Pandit Manas Ranjan , Badavath Purnesh Singh , Kumar Vijay
Published: December 2023

We present a deep learning model that recognizes multiplexed superposed Laguerre Gaussian beams through their astigmatic transformed far-field speckle patterns with an accuracy of 99%.
Optical Fiber Curvature Sensor With High Sensitivity and a Broad Dynamic Range Enabled by Machine Learning
Authors: Zhu Chen , Huang Jie
Published: December 2023

An optical fiber curvature sensor based on a no-core fiber (NCF) cascaded with a hollow-core fiber (HCF), realizing simultaneously high sensitivity and a broad dynamic range with the assistance of machine learning analysis is demonstrated.
Fano Resonances in Plasmonic Homo-Multimers: Expanding Spectroscopic Horizons through Geometrical Tunability
Authors: Choudhary Riya , Srivastava Sachin Kumar
Published: December 2023

Here, we demonstrate the support for Fano resonances in plasmonic homo-multimers. Combined with a localized surface plasmon resonance (LSPR) in varying dielectric environments, this enables extremely sensitive tuning of the Fano resonance's amplitude.
Analysis of Structured Light Beam Propagation in Turbulent Free Space
Authors: Conceição Carlos Eduardo A. , Alencar Thonimar V.
Published: December 2023

Understanding the impact of atmospheric turbulence on optical beam propagation is vital for the analysis and optimization of free-space optical communication systems. Recent proposals have indicated the potential of structured light beams to sustain coherence even in turbulent channels. In this study, we employ the split-step Fourier method as a modeling technique to simulate the propagation of structured light beams in turbulent free space. By investigating the behavior of structured light under these conditions, we aim to uncover valuable insights and strategies for mitigating the disruptive effects of turbulence in optical communication.
Performance analysis of a Deep Neural Network for digital demodulation in Gridless Nyquist-WDM Systems
Authors: Vargas Higuera S. J. , Montoya Ocampo C. A. , Granada Torres J. J.
Published: December 2023

We propose a digital demodulation technique using a deep neural network to demodulate channels affected by Inter-Channel Interference (ICI) in a 3×16-Gbaud 16-QAM Nyquist-WDM system. Results shows gains up to 1.3 dB.
Comparison of Zona Pellucida Dissection Results Using Visible and Infrared Femtosecond Laser Pulses
Authors: Sitnikov D. S. , Ilina I. V. , Mukhdina D. E. , Filatov M. A. , Silaeva Yu. Yu. , Romashevskiy S. A.
Published: December 2023

Results of cutting the zona pellucida of mouse embryos by infrared femtosecond laser pulses are compared with those for visible wavelength. The study is aimed to find optimal parameters for laser assisted hatching procedure.
Robustness of laser-induced underwater acoustic source localization using multiple hydrophones
Authors: Yellaiah J.
Published: December 2023

This study demonstrates optically-induced underwater acoustic source localization using multiple hydrophones by determining the arrival time and peak-to-peak overpressures. The robustness of sensing underwater acoustic signals indicates state-of-the-art for the feasibility study of laser-induced sonar.
Mapping of Algae on Walls with a 3D Printed Hyperspectral Fluorescence Lidar
Authors: Boateng Rabbi , Huzortey Andrew A. , Gbogbo Adolphe Y. , Yamoa Doria A. S. , Zoueu Jérémie T. , Brydegaard Mikkel , Månefjord Hampus , Anderson Benjamin
Published: December 2023

Mapping of algae on facades and difficult-to-reach parts of tall buildings is demonstrated using a low-cost 3D-printed hyperspectral fluorescence lidar (HSFL). The 3D-printed HSFL has the potential for rapid and cost-effective remote assessment of algae.
Numerical Simulation for Air-to-Water FMCW Lidar for Low Transmitting Power Drone-Based Bathymetry
Authors: Sultana Hosna , Atieh Ahmad
Published: December 2023

We proposed a 532 nm wavelength FMCW Lidar varying the RF signal bandwidth for different water types and wavelet pattern attenuation models using the OptiSystem suit for the detectable signals while transmitting low optical power.
Single-ToF-camera-based Material Identification Using Depth and Intensity Data Fusion
Authors: Yang Dongzhao , An Dong , Wang Qiang , Pan Zhongqi , Yue Yang
Published: December 2023

This work presents a material identification method based on depth and intensity data fusion from a single ToF camera. It addresses the challenge of identifying objects with varying spatial positions and surface orientations.
Femtosecond-laser microfabrication of optical waveguides in LiNbO3 for Astrophotonic integrated devices
Authors: Sánchez-Hernández María , Arroyo Víctor , Bonduelle Myriam , Vázquez de Aldana Javier R. , Romero Carolina , Martín Guillermo
Published: December 2023

Achieving compact devices is essential for Astronomy. Integrated waveguides are key in compact devices, so their optimization can potentially reduce the final dimensions. In this work, we study the design of straight, narrowing and widening waveguides in LiNbO3. We find a relevant dependence of light guiding on design and fabrication parameters.
Guided-mode resonance of a square-lattice grating with near-zero dispersion
Authors: Amedalor Reuben , Karvinen Petri , Pesonen Henri , Turunen Jari , Niemi Tapio , Bej Subhajit
Published: December 2023

We demonstrate that a type of guided-mode resonance with near-zero dispersion can be excited in a silicon nitride square-lattice grating, and the modal dispersion can be engineered by varying the polarization angle of incoming light.
Raman spectroscopy using shaped laser light for through-bottle whisky detection
Authors: Dwapanyin George , Buchanan Rory , Chen Mingzhou , McMillan Lewis , Shillito Georgina , Dholakia Kishan , Bruce Graham D.
Published: December 2023

We present a variation of the inverse spatially offset Raman spectroscopy (ISORS) known as the focus-matched ISORS. We highlight its advantages and apply it to probe single malt Scotch whisky samples through their original bottles.
Composite Spectral Response of Polygonal Chiral Thin Film Resonator Arrays Using Phasor Electric Field Vectors
Authors: Muntaser Akram , Chatterjee Monish R
Published: December 2023

In this paper, we design arrays of chiral thin film resonators polygonally aligned and illuminated by a linear, p-polarized plane wave incident normally on the array thin films. Each such thin film is analyzed by evaluating the corresponding mode spectra under variable chirality coefficients, thin film thickness, resonator length, and substrate placement conditions as a function of the (monochromatic) mode frequency. The goal is to optimize the effective transmitted mode intensity in the visible range corresponding to wide - and narrowband spectra.
Characterization of Optoelectronic Response of Metal-Semiconductor-Metal Structures by Ultrafast Photocurrent Imaging
Authors: Emmert Luke A. , Rudolph Wolfgang , Zarkesh-Ha Payman , Schmuker Landon , Gruzdev Vitaly
Published: December 2023

Capability of high-resolution mapping of ultrafast photoconductivity in metal-semiconductor-metal micro- and nanostructures can substantially advance photonics research. We report micrometer-resolution photocurrent mapping of structures driven by femtosecond laser to characterize their response to ultrafast excitation.
Enhanced thermal stability of soliton states in coupled Kerr microresonators
Authors: Stone Brandon , Rukh Lala , Colación Gabriel , Drake Tara
Published: December 2023

We present an analysis of soliton stability in coupled silicon nitride (Si3N4) microresonators. We observe an increase in main resonator soliton lifetime corresponding to the proximity of auxiliary resonator modes to optical comb frequencies.
White Light Imaging With Omni-Resonant Fabry Perot Cavity
Authors: Shiri Abbas , Hall Layton A. , Abouraddy Ayman F.
Published: December 2023

We experimentally demonstrate a new configuration for an omni-resonant imaging system with a 140 nm bandwidth in the visible spectrum through a Fabry-Perot cavity with 0.5 nm resonance linewidth.
Generating a 4-photon tetrahedron state: towards simultaneous super-sensitivity to non-commuting rotations
Authors: Ferretti Hugo , Yilmaz Y. Batuhan , Bonsma-Fisher Kent , Goldberg Aaron Z. , Lupu-Gladstein Noah , Pang Arthur O. T. , Steinberg Aephraim M.
Published: December 2023

A primary goal of quantum metrology is to understand the optimal way to measure multiple incompatible observables. Here, we report on the experimental demonstration and characterisation of a four-photon state, the “tetrahedron state”, which is the optimal state for simultaneous estimation of all parameters describing a rotation.
Low-cost Free-Space Optical Communications with Commodity Hardware
Authors: Cox Mitchell A. , Dindar Mikaeel , Iga Fortune Kayala
Published: December 2023

This study presents two innovative cost-effective systems for resilient freespace optical communication, leveraging WiFi and fiber SFP transceivers, enabling temporary connectivity for low-income communities in developing countries. These rudimentary prototypes show promising room for enhancement.
OAM beams multiplexing and classification under atmospheric turbulence via Fourier convolutional neural network
Authors: Ye Jiachi , Kang Haoyan , Wang Hao , Altaleb Salem , Heidari Elham , Asadizanjani Navid , Sorger Volker J. , Dalir Hamed
Published: December 2023

We propose a method for classifying multiplexed Orbital Angular Momentum (OAM) beams using Fourier Convolutional Neural Network (FCNN), demonstrating 67.68% accuracy in medium atmospheric turbulence condition.
Fresnel zone plate metalens based on silicon subwavelength grating engineering
Authors: Fraser William , Ye Winnie N.
Published: December 2023

Compact metalenses have been demonstrated with the ability to perform high-efficiency focusing. In this work, we present the design of a silicon-on-insulator-compatible metalens that focuses 1550 nm light with a peak efficiency of 42.7%.
Nonlinear Properties of Hybrid ZnTe-on-Si Waveguides for Telecommunication Applications
Authors: Stoll Katherine , Bhandari Harish B. , Maksimov Oleg , Hansen Katherine , Kimerling Lionel , Agarwal Anuradha , Serna Samuel
Published: December 2023

A novel ZnTe-on-Si waveguide system is presented and demonstrates a reduced TPA coefficient compared to pure silicon with a comparable nonlinear Kerr refractive index to achieve a significantly higher nonlinear FOMTPA for efficient nonlinear applications.
Non-Planar Nano-Epitaxy of InGaN Quantum-Well Emitters for Green-Yellow Semiconductor Lasers
Authors: Wood Michael G. , Rice Anthony , Lee Stephen R. , Gunning Brendan P. , Crawford Mary H. , Lu Ping , Sovinec Courtney L. H. , Grine Alejandro J. , DeJong Elizabeth , Feezell Daniel , Serkland Darwin K.
Published: December 2023

We report non-planar regrowth of InGaN quantum wells on triangular InGaN buffer layers grown on sub-200nm-wide GaN ridges. Photo-pumped internal quantum efficiencies above 20% at yellow wavelengths hold promise for semiconductor laser gain regions.
Measurement of two-point correlation function of ultrafast pulsed fields
Authors: Bhattacharjee Abhinandan , Serino Laura , Folge Patrick , Brecht Benjamin , Silberhorn Christine
Published: December 2023

We measure the two-point correlation function for perfectly and partially coherent pulses and obtain their spectral amplitude, phase, and coherence profiles. Our method is readily applicable to single-photon pulses.
Localized Momentum-Space Distribution of Photocurrents Injected by Quantum Interference of Nonlinear Absorption Processes
Authors: Gong Yiming , Wang Kai , Cundiff Steven T.
Published: December 2023

Based on polarization dependence, we show that momentum-space distribution of photocurrents is more localized in quantum interference of two- and three-photon absorptions than that in quantum interference of one- and two-photon absorptions.
Results in Highly-Efficient Side-Pumped Nd:YLF Lasers
Authors: Prado Felipe M. , Franco Tomás J. , de A. Vieira Tárcio , Deana Alessandro M. , Wetter Niklaus U.
Published: December 2023

Here we present resents advancements in Nd:YLF lasers, achieving record-breaking efficiency and output energies. In Q-switched operation, we obtained output energy of 41.2 mJ with peak power of 46 MW. Furthermore, we achieved a near quantum-defect slope efficiency of 78.2%, the highest reported for Nd:YLF lasers. We also present efficient 1314 nm laser emission.
Optical Coherence Tomography with Undetected Photons Based on an Integrated PDC Source
Authors: Roeder Franz , Pollmann René , Stefszky Michael , Santandrea Matteo , Luo Kai Hong , Quiring Victor , Ricken Raimund , Eigner Christof , Brecht Benjamin , Silberhorn Christine
Published: December 2023

We present an optical coherence tomography scheme with undetected photons in an SU(1,1) interferometer based on an integrated nonlinear waveguide. We achieve an axial resolution of < 0.2mm in the time domain and implement differential pumping to compensate for losses in the interferometer.
Nonclassical Correlations in the Sidebands of Light Scattered from Cold Two-Level Atoms
Authors: Marinho L. S. , Araújo M. O. , Martins W. , de Almeida A. A. C. , Borges G. C. , Felinto D.
Published: December 2023

We present a strategy for enhancing the quantum correlations of biphotons generated via spontaneous four-wave mixing in cold two-level atoms by employing frequency filters for the Rayleigh linear component of the spectrum.
Locking of Chirped Modes using Amplitude Modulation in Acousto-Optic Frequency-Shifted Feedback Fiber Lasers
Authors: Cuenca M. , Maestre H. , Torregrosa G. , Fernández-Pousa C. R.
Published: December 2023

Modelocking of an acousto-optic frequency-shifted feedback C-band Er:fiber laser is induced, with reduced emission threshold, by addressing the frequency shifter with a tone modulated at the cavity’s free spectral range and lying within the shifter’s bandwidth.
Frequency-Domain Engineering of Bright Squeezed Vacuum for Continuous-Variable Quantum Information
Authors: Hurvitz Inbar , Karnieli Aviv , Arie Ady
Published: December 2023

Bright squeezed vacuum (BSV) is a non-classical state of light offering capacity for encoding information. We design quantum correlations of BSV using nonlinear holography, showcasing cluster state generation and spectrum shaping for quantum information applications.
All optically powered chip-on-tip microcamera for surgical guidance
Authors: Sekar Sanathana Konugolu Venkata , Baskaran Meena , Ma Hui , Rensing Marc , Gradkowski Kamil , Khan Asif , Antony Cleitus , Townsend Paul D. , Corbett Brian , Andersson-engels Stefan
Published: December 2023

We present an all-optical powered 6 Fr microcamera based chip-on-tip endoscope system. The optical powering is achieved by fiber illuminating a customized multisegmented photovoltaic cell. The powering system produces 10 mW of electrical power sufficient to power microcamera. We demonstrated the performance of the system on calcification tissue-mimicking phantoms.
Demonstration of Space-Time Wave Packets in Optical Fibers with Dynamic Motion and Tunable Group Velocity
Authors: Su Xinzhou , Zou Kaiheng , Wang Yingning , Zhou Huibin , Song Hao , Ko Wing , Zeng Ruoyu , Alhaddad Abdulrahman , Ramakrishnan Murale , Duan Yuxiang , Tur Moshe , Christodoulides Demetrios N. , Willner Alan E.
Published: December 2023

We experimentally demonstrate STWPs in fiber by synthesizing various spatial modes onto frequency comb lines. Fiber STWPs are tailored to: (a) dynamically rotate/translate with a 4.8- ps period, and (b) have a tunable group velocity of 10.05, 0.88, and -3.24×108 m/s.
Ponderomotive acceleration with high energy tilted ultrafast laser pulses
Authors: Hunt Patrick , Wilhelm Alex , Wang Shoujun , Hollinger Reed , Shpilman Ze’ev , Anaraki Sina Z. , Davenport Aaron , Adams Daniel E. , Menoni Carmen , Rocca Jorge , Durfee Charles G.
Published: December 2023

Using a novel pulse compressor for the CSU ALEPH facility, we demonstrate direct ponderomotive acceleration of electrons with 1.5J, tilted ultrafast pulses. The < 500keV electrons are directed normal to the tilted pulse front as predicted.
Multivariate Analysis of SERS Signals for Multianalyte Detection in Co3O4-Ag Substrates
Authors: Tieppo Kamila , Fonsaca Jéssica E. S. , Martins Kevin S. B. , Teixeira Wanderson S. R. , de Matos Christiano J. S.
Published: December 2023

We propose a new SERS substrate based on a Co3O4-Ag nanocomposite and employ it to detect two different chemical species. Multivariate analysis is then used to individually identify the presence of each species.
Role of bandwidth of display source on information transmission in holographic waveguide based near-eye displays
Authors: Kaur Rajveer , Kumar Raj
Published: December 2023

Low spectral bandwidth of display source leads to clipping of the information in the waveguide based near eye displays. We study the influence of spectral bandwidth of source on information transmission through holographic waveguide displays.
3D Printed Integrable Optofluidic Dye Laser
Authors: Sanyogita  , Ghar Amar , Panigrahi P. K.
Published: December 2023

A tunable, integrable, and coherent chip-scale optofluidic dye laser has been developed using 3D printing technology. Multimode emission as a Fabry-Perot optofluidic microresonator is demonstrated with the threshold of 5.5 mW and linewidth of 8nm.
Platicon Microcomb Generation in Deuterated Silicon Nitride Microring with Sidewall Gratings
Authors: Li Jiaqi , Zhang Yanfeng , Yu Siyuan
Published: December 2023

We demonstrate platicon microcomb generation in a normal-dispersion deuter-ated silicon nitride microring resonator with sidewall gratings. It is realized by pumping the resonance adjacent to the Bragg gratings-induced mode splitting.
High quality factor meta-reflect-arrays for high-resolution and low-power wavefront engineering
Authors: Lin Lin , Hu Jack , Dagli Sahil , Xu Zhihao , Meng Yuan , Dionne Jennifer A. , Lawrence Mark
Published: December 2023

We introduce meta-reflect-arrays composed of magnetic dipole guided-mode resonances whose high quality factors enable wavefront shaping with vanishingly small structural perturbations (<2.6% volume fraction). This brings low-power, efficient, and high-resolution spatial light modulation into view.
Freeform Direct-write and Rewritable Photonic Integrated Circuit in Phase-Change Thin Films
Authors: Wu Changming , Deng Haoqin , Yu Heshan , Takeuchi Ichiro , Ríos Carlos , Li Mo
Published: December 2023

We report a fabrication-less technique to freeform directly write and rewrite the photonic integrated circuits on a thin film of low-loss phase-change material Sb2Se3 in one step, without using any lithography and etching processes.
Surface-Emitting Periodically Poled Thin Film Lithium Niobate Far Infrared Source
Authors: Yoshioka Valerie , Jin Jicheng , Zhen Bo
Published: December 2023

We simulated surface emission DFG in periodically poled thin film lithium niobate waveguides; maximum efficiency for a 1 cm device emitting 30 THz light is 9.16× 10−6 W−1 with d33 = 30 pm/V.
A Study of Dual-Pumped Microresonator Solitons using 3-Wave Equations
Authors: Shandilya Pradyoth H. , Moille Gregory , D’Aguanno Giuseppe , Srinivasan Kartik , Menyuk Curtis R.
Published: December 2023

We show that 3-wave equations can be used to accurately model the multi-color solitons that appear in dual-pumped microresonators. These equations can be used to analyze the soliton properties.
Comparative Analysis of Jacket Coated and Uncoated Arched SMF Based Health Monitoring System
Authors: Mishra Pratik , Kumar Hemant , Jha Rajan
Published: December 2023

Flexible arch type polydimethylsiloxane (PDMS) embedded single mode fiber (SMF) based optical wearable interferometric system is presented for pulse wave detection that overcomes the mechanical constraints associated with other fiber-based wearables.
Efficient deconvolution for diagonally scanned Airy light-sheet microscopy
Authors: Valantinas Laurynas , Najera Guillermo S. , Weijer Cornelis J. , Vettenburg Tom
Published: December 2023

We present a novel approach for Airy light-sheet microscopy, employing diagonal scanning to unlock the ability to image large samples. Our new diagonal deconvolution algorithm is the key to this approach, enabling efficient image processing.
Ultra-thin Photonic Structures for Integration of Quantum Emitters in van der Waals Materials
Authors: Cho Hyunhee , Shin Dong-Jin , Sung Junghyun , Ko Young-Ho , Gong Su-Hyun
Published: December 2023

We investigate the ultra-thin photonic structures of WS2 as one of the candidates for enhancing the performance of quantum emitters in van der Waals materials.
Use of a Hybrid Opto-electronic Correlator for High-Speed Pattern Recognition in Fundamental Science Applications
Authors: Tiwari Aarushi , Gamboa Julian , Hamidfar Tabassom , Shen Xi , Shahriar Selim M.
Published: December 2023

Current electronics-based approaches used by research facilities such as CERN and LIGO are sub-optimal for signal recognition in large-scale data streams. We demonstrate the Hybrid Opto-electronic correlator as a potential alternative for fast data processing.
Digital hologram manipulation for wide-angle pupil holographic near-eye display
Authors: Kukołowicz Rafał , Kozacki Tomasz , Chlipala Maksymilian , Idicula Moncy Sajeev , Finke Weronika
Published: December 2023

This work shows the possibility of utilizing digital holograms in the wide-angle holographic near-eye display. The object's magnification and axial position manipulation are applied and confirmed in the experimental optical reconstruction.
Two-photon Lithography of Microrotors in Additive-free Resin: An Approach to Attain Mechanically Robust, Functional Microstructures
Authors: Jaiswal Arun , Rani Sweta , Singh Gaurav Pratap , Hassan Mahbub , Nasrin Aklima , Gomes Vincent G. , Saxena Sumit , Shukla Shobha
Published: December 2023

Optimal exposure conditions in two-photon polymerization-based additive manufacturing have been systematically investigated for the fabrication of functional three-dimensional structures in additive-free resin. The realization of complex micro-rotors has been demonstrated using the optimal process parameters.
High-Pixel Density Micro-LED Display with Easy-to-Manufacture Color Conversion Layer
Authors: Chen Chi-Shiang , Tsai Chih-Yuan , Cheng Yen-Chia , Lin Jian-Hong , Chen Shan-Yu , Wu Chen-Hsun , Lin Ching-Fuh
Published: December 2023

We propose an easily manufacturable high-density 5080 PPI micro-LED process for the color-conversion layer fabrication in display applications. Up to 72% and 81% quantum yields for red and green arrays and addressing color crosstalk issues.
Design and Optimization of Graphene Based Broadband Terahertz Polarizer with a High Extinction Ratio
Authors: Anjali  , Varshney R. K. , Kumar Sunil
Published: December 2023

We present a graphene based wire-grid terahertz polarizer with a high extinction ratio (ER). The device achieves an ER of up to 60 dB at 1.7 THz, demonstrating potential for various applications in THz optoelectronics.
Nondestructive, high-resolution, chemically specific 3D nanostructure characterization using extreme ultraviolet, coherent diffractive imaging reflectometry
Authors: Tanksalvala Michael , Esashi Yuka , Porter Christina L. , Jenkins Nicholas W. , Wang Bin , Zhang Zhe , Miley Galen P. , Horiguchi Naoto , Yazdi Sadegh , Liao Chen-Ting , Gerrity Michael , Kapteyn Henry C. , Murnane Margaret M.
Published: December 2023

A grand challenge in semiconductor metrology has been the nondestructive characterization 3D nanostructures and their multilayer structure, interfaces, and dopant concentrations. We combine extreme ultraviolet reflectometry with state-of-the-art ptychography imaging algorithms to achieve this goal.
Experimental Demonstration of Neural Adaptive Quantum Tomography for Two-Qubit States
Authors: Mansouri Arman , Fazili Riza , Czischek Stefanie , Lundeen Jeff S.
Published: December 2023

We experimentally implement a neural adaptive quantum tomography scheme for two-qubit states. We aim to demonstrate speed-up and retained accuracy in the reconstruction compared to Bayesian adaptive quantum tomography.
Coherence in Core-ionized Molecule Probed with Attosecond Angular Streaking
Authors: Wang Jun , Driver Taran , Bucksbaum Philip H. , Marinelli Agostino , Cryan James P.
Published: December 2023

Ionized by attosecond x-ray pulses, the core-excited ionic states of 1,1-difluoroethylene can remain partially coherent. We experimentally observe this coherence by the angular streaking of Auger-Meitner electrons from the ion.
Quantum advantage in noise sensing of additive-noise channels
Authors: Nair Ranjith , Gu Mile
Published: December 2023

Classical strategies for sensing the noise level of an additive-noise channel cannot provide energy-enhanced precision. Two-mode squeezed vacuum probes enable energy-enhanced precision and approach a universal lower bound on it.
Laser Plasma Accelerators: Next Generation X-ray Light Sources
Authors: Albert Félicie
Published: December 2023

We present the development of x-ray sources based on laser-wakefield acceleration of electrons with high-intensity lasers. They are developed for applications including non-destructive imaging, medical imaging, or high energy density science at large-scale laser facilities.
Attosecond Clocking of Many-Body Correlations in Quantum Materials
Authors: Borsch Markus , Freudenstein Josef , Meierhofer Manuel , Huber Rupert , Kira Mackillo
Published: December 2023

Our experiment-theory advancements directly detect many-body correlations of quantum materials at attosecond time scales for the first time. Wigner functions provide direct and intuitive view on the many-body dynamics predicted by our theory.
Origin of the flat-envelope cavity mode of Berkeley surface-emitting lasers (BerkSELs)
Authors: Papapanos C. , Contractor R. , Noh W. , Redjem W. , Qarony W. , Martin E. , Kante B.
Published: December 2023

We will discuss the physics of the unconventional modes demonstrated on Berkeley surface-emitting lasers (BerkSELs) that enable scale-invariant single mode operation in photonic crystal lasers, along with the necessary conditions enabling this phenomenon.
Mental health status and the quality of life of infertile women receiving fertility treatment in Bangladesh: A cross-sectional study
Authors: Hasan A. B. M. Nahid , Sharif Azaz Bin , Jahan Ishrat , Begum Mosammat Rashida
Published: December 2023

Infertility poses significant physical and psychological challenges for women of reproductive age. In low- and middle-income countries, the prevalence of depression among infertile women is alarmingly high, reaching 44.32%. Additionally, over 50% of infertile women worldwide experience varying degrees of decline in their quality of life. Therefore, this study aimed to assess the effects of infertility on the mental health status and quality of life of infertile women in Bangladesh. Between December 2022 and March 2023, 375 infertile women in Dhaka, Bangladesh were selected using simple random sampling for this cross-sectional study. The participants’ mental health status was assessed using the Depression Anxiety and Stress Scale (DASS-21), while their quality of life was evaluated by the Short Form-12 (SF-12) scale. The prevalence of depression, anxiety, and stress were 59.7%, 55.0%, and 48.7%, respectively. Multiple logistic regression showed that infertile homemakers had 2.98 (95% CI: 1.30 to 6.80) times the odds of depression than government service holders. Aborted infertile women had 1.8 (95% CI: 1.10 to 3.26) times the odds of depression. Infertile women who married between 20 and 24 years old were 49% (95% CI: 0.27 to 0.98) less anxious than those who married earlier. Low-income infertile women (<30,000 BDT) were 2.29 (95% CI: 1.02 to 5.14) times more likely to be stressed than those with higher incomes (>60,000 BDT). Multiple linear regression analysis suggests that education and infertility diagnosis status significantly affect the Mental Component Summary (MCS-12) scores of the Short Form-12 (SF-12). In contrast, age, occupation, and Body Mass Index (BMI) were the significant predictors for the Physical Component Summary (PCS-12). Policymakers may use lessons learned from this study to incorporate appropriate counseling techniques, social awareness campaigns, and media involvement to control the added burden of infertility on women’s psychological health and quality of life.
MANAGERIAL AND TECHNICAL LABOR RATIONING: MODERN REALITIES AND DEVELOPMENT PROSPECTS
Authors: Anufrieva I. Yu. , Grazhdankina O. A.
Published: December 2023

The article is devoted to topical issues of centralized and intra-organizational labor rationing in modern economic conditions. The authors first point out the essence and increased importance of labor rationing, draw attention to the difference between labor standards and labor standards, note the problems of developing a regulatory framework and calculating labor standards in domestic organizations. The analysis of the content and completeness of the domestic normative-methodical and reference literature on labor rationing is carried out. The degree of methodological elaboration of normative materials and the possibilities of using labor rationing in various sectors of the economy, by main types of activity and by categories of employees is revealed. In this regard, the authors point out the qualitative differences between managerial and technical labor rationing. Also, using the example of individual organizations of the Altai Territory, the features of the organization of intra — organizational labor rationing in practice, the needs of organizations for labor rationing specialists. Based on the results of the study, the authors gave recommendations on the development of an internal regulatory framework and the calculation of labor standards in the conditions of digitalization.
Shakespeare and Revision
Authors: Wells Stanley
Published: December 2023

This lecture was originally published by the Institute of English Studies, University of London in 1987. The Hilda Hulme Memorial Lectures were established in 1985 following a donation from Mr Mohamed Aslam in memory of his wife, Dr Hilda Hulme. The lectures are on the subject of English literature and relate to one of ‘the three fields in which Dr Hulme specialised, namely Shakespeare, language in Elizabethan drama, and the nineteenth-century novel’.
Advances in HER2-Targeted Treatment for Advanced/Metastatic Urothelial Carcinoma
Authors: Qu Mengnan , Zhou Li , Yan Xieqiao , Li Siming , Wu Xiaowen , Xu Huayan , Li Juan , Guo Jun , Zhang Xu , Li Hongzhao , Sheng Xinan
Published: December 2023

Urothelial carcinoma (UC) represents a common malignancy of the urinary system that can involve the kidneys, ureter, bladder, and urethra. Advanced/metastatic UC (mUC) tends to have a poor prognosis. UC ranks third in terms of human epidermal growth factor receptor 2 (HER2) overexpression among all tumors. However, multiple studies found that, unlike breast cancer, variable degrees of HER2 positivity and poor consistency between HER2 protein overexpression and gene amplification have been found. Trials involving trastuzumab, pertuzumab, lapatinib, afatinib, and neratinib have failed to prove their beneficial effect in patients with HER2-positive mUC, and a clinical trial on T-DM1 (trastuzumab emtansine) was terminated prematurely because of the adverse reactions. However, a phase II trial showed that RC48-ADC was effective. In this review, we provided an in-depth overview of the advances in the research regarding HER2-targeted therapy and the role of HER2 in mUC. Furthermore, we also discussed the prospects of potential strategies aimed at overcoming anti-HER2 resistance, and summarize the novel anti-HER2 approaches for the management of mUC used in recent clinical trials.
Delayed Giant Pseudoaneurysm With Left-to-Right Shunt Following Postinfarct Ventricular Septal Perforation Repair
Authors: Machii Yojiro , Taoka Makoto , Hayashi Yuki , Harada Atsushi , Kamata Keita , Tanaka Masashi
Published: December 2023

Left ventricular pseudoaneurysm with a left-to-right shunt is extremely rare, requiring surgery if symptomatic; however, surgery has a high risk. Here, the case of a 77-year-old man with heart failure symptoms is reported, in which he develops a giant left ventricular pseudoaneurysm 16 months after ventricular septal perforation repair as a result of acute myocardial infarction, with mild shunt blood flow from the pseudoaneurysm to the right ventricle. Intraoperative findings showed a free wall rupture along the area where the patch was secured during the initial surgery. The patient was discharged on postoperative day 13, and postoperative examination revealed no abnormalities.
Algae in the aerophytic habitat of Račiške ponikve cave (Slovenia)
Authors: Mulec Janez , Kosi Gorazd
Published: December 2023

In the cave entrance of Račiške ponikve, four selected sites with confluent algal growth and different sun irradiance levels were sampled for algological analysis. Altogether, 42 algal taxa were determined, with the highest proportion of cyanobacteria, 30 taxa (71%), followed by 8 taxa (19%) of Chlorophyta and 4 taxa (10%) of Chrysophyta. The favourable ratio of Oscillatoriales vs. Nostocales indicates that flora in Račiške ponikve cave is generally exposed to low photo flux. In the twilight zone of the cave, coccoid cyanobacteria prevailed. Moreover, at all sampling points algae characteristic of water and/or soil habitats were also identified besides typical aerophytic algae.
Subekoregije in bioregije celinskih voda Slovenije
Authors: Urbanič Gorazd
Published: December 2023

The main objective of our work was to carry out the division of inland water ecoregions ─ hydroecoregions of Slovenia and to define inland water subecoregions ─ subhydroecoregions, bioregions and large rivers. A two-stage approach was used. Initially, a division was performed using thematic maps. During the second step, a priori division was checked using biological data. Historical fish data, and benthic invertebrate data collected at reference and slightly impacted sites were used. A statistical analysis of non-metric multidimensional scaling was performed to test a priori divisions. The Alps hydroecoregion was divided in two subhydroecoregions: the Alps-Danube river basin and Alps-Adriatic river basin. The Dinarids hydroecoregion was also divided in two subhydroecoregions: the Eudinaric and Sub-Mediterranean.  Hydroecoregions and subhydroecoregions were divided into 16 bioregions and 9 types of large rivers. In the Dinarids hydroecoregion, seven bioregions were defined, in the Alps hydroecoregion five bioregions, in the Pannonian lowland hydroecoregion three bioregions, whereas the Po lowland hydroecoregion was not further divided and has only one bioregion in Slovenia. Main abiotic differences among bioregions beside river basin are also dominant geology, maximum altitude classes and altitude classes of the influence area
New records on synanthropic spider species (Arachnida: Araneae) in Slovenia
Authors: Kostanjšek Rok , Celestina Ana
Published: December 2023

Four spider species, Dictyna civica (Lucas 1850) (Dictynidae), Philodromus praedatus O. P. Cambridge 1871 (Philodromidae), Cheiracanthium mildei L. Koch 1864 (Miturgidae) and Clubiona similis L. Koch 1867 (Clubionidae), new for Slovenian fauna, have been recorded on bridges over the Ljubljanica river and on buildings in the centre of Ljubljana
Recording the Eurasian lynx (Lynx lynx) vocalization sequences on Snežnik plateau, Slovenia
Authors: Krofel Miha , Kos Ivan
Published: December 2023

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First record of Horvath's rock lizard (Iberolacerta horvathi) in the Karavanke Mts., Slovenia
Authors: Cafuta Vesna
Published: December 2023

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The second record of Lasiommata petropolitana (Fabricius, 1787) in Croatia
Authors: Koren Toni , Štih Ana
Published: December 2023

After the first confirmed record of L. petropolitana in Croatia on Mt Snježnik, another specimen of this species was caught on the nearby Obruč Mt in May 2010. This record expands its known area of occurrence in Croatia to the northwest and suggests that L. petropolitana could in the future be found on other mountains of Gorski Kotar and in their surrounding areas.
First record of a larger hibernaculum of the Soprano pipistrelles Pipistrellus pygmaeus (Leach, 1825) in Slovenia
Authors: Petrinjak Alenka
Published: December 2023

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Coenagrion hastulatum (Charpentier, 1825), new for the dragonfly fauna of Bosnia and Herzegovina (Odonata: Coenagrionidae)
Authors: Bedjanič Matjaž
Published: December 2023

At the high-altitude Donje Bare and Gornje Bare Lakes in the surroundings of Tjentište village, Zelengora Mts., Sutjeska National Park, SE Bosnia and Herzegovina, Coenagrion hastulatum was recorded on 26 June 2011. The occurrence of the species on the southern border of its European range is outlined and discussed. Faunistic records on a total of 22 spp. observed at 11 localities in the southeastern part of the country between 26 and 29 June 2011 are appended.
On the occurrence of the Italian agile frog (Rana latastei Boulenger, 1879) in the Slovenian part of Istria
Authors: Glasnović Peter
Published: December 2023

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Contribution to the knowledge of the spring butterfly fauna of the Republic of Macedonia (Lepidoptera: Papilionoidea & Hesperioidea)
Authors: Verovnik Rudi
Published: December 2023

In spring 2010, we encountered 60 butterfly species during field surveys centred mainly in the under-surveyed southeastern part of the Republic of Macedonia. We visited 23 localities, where several interesting observations were made. Among these, new sites of some rare species such as Pontia chloridice, Pieris krueperi, Plebejus sephirus, Scolitantides orion, Tarucus balkanicus, Melitaea ornata, Carcharodus orientalis, and Erynnis marloyi should be mentioned. Such a high number of species observed indicates an overall high butterfly diversity of this region, particularly in the lower Vardar valley. Here, several specific habitats hosting rare and threatened species were discovered. The anthropogenic pressure on important butterfly habitat is still low in the surveyed area; however, the first signs of large scale abandonment are already visible.
Observations of the common wall lizard Podarcis muralis maculiventris (Werner, 1891) outside its natural range in Slovenia
Authors: Jagar Tomaž , Ostanek Erika
Published: December 2023

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Yellow goatsbeard Tragopogon dubius Scop. (Asteraceae): confirmation of its dubious occurrence in Central Slovenia
Authors: Jogan Nejc
Published: December 2023

Tragopogon dubius is a species native to SW Slovenia and with several dubious records in central and eastern parts of the country. Its locus classicus is in SW Slovenia at Senožeče, but there is a slight doubt about the type description as no herbarium material has been preserved. All records (and herbarium vouchers in University of Ljubljana’s (LJU) collection) of the species from continental Slovenia have been critically assessed, but none of them has proved to be reliable. Three new recently discovered records linked to the railways in central and E Slovenia are presented and discussed.
Faunistic survey of terrestrial isopods (Isopoda: Oniscidea) in the Boč Massif area
Authors: Ravnjak Blanka , Kos Ivan
Published: December 2023

In 2005, terrestrial isopods were sampled in the Boč Massif area, eastern Slovenia, and their fauna compared at five different sampling sites: forest on dolomite, forest on limestone, thermophilous forest, young stage forest and extensive meadow. Two sampling methods were used: hand collecting and quadrate soil sampling with a subsequent heat extraction of animals. The highest species diversity (8 species) was recorded in the forest on dolomite and in young stage forest. No isopod species were found in samples from the extensive meadow. In the entire study area we recorded 12 different terrestrial isopod species and caught 109 specimens in total. The research brought new data on the distribution of two quite poorly known species in Slovenia: the Trachelipus razzauti and Haplophthalmus abbreviatus.
Butterfly fauna (Lepidoptera: Rhopalocera) of Donji Emovci, Požega, Croatia
Authors: Koren Toni , Letić Goran
Published: December 2023

An example of a photographic faunistic study of butterflies implemented in Croatia is presented herewith. The survey was conducted in the near surroundings of Donji Emovci village, near Požega, Slavonia, between 2009 and 2013. The surveyed area consists mostly of a mosaic of different kinds of monocultures, scattered grasslands and forest fragments. Seventy-nine butterfly species could have been reliably identified from the photographs, several of which are rare or interesting records for Croatia (e.g. Colias erate, Parnassius mnemosyne and Cupido decoloratus). This study shows that butterfly photography can indeed be a useful tool for faunistic studies, although additional methods should be used to gain complete species lists.
Distribution and population size estimation of the moor frog Rana arvalis Nilsson, 1842 in Ljubljansko barje Nature Park, central Slovenia
Authors: Stanković David , Cipot Maja
Published: December 2023

Until recently, the moor frog Rana arvalis has been recorded only from the Pannonian and Sava Basins of north-eastern and south-eastern Slovenia, respectively. Here we report on the occurrence of the species at Ljubljansko barje, central Slovenia, and give estimates of the species’ abundance and distribution. In addition, we present some morphological characteristics of this population and offer insights into the present threats and the status of its habitats. The overall population size was estimated through egg mass count and is calculated to be more than 19,000 adults. All findings were distributed in two separate clusters. The northern cluster hosted more than 96% of all findings, while the smaller cluster in the south-eastern part of Ljubljansko barje accounted for only a fraction of the records. Even though the habitats in the northern cluster are relatively well preserved, the possibility of local extinction remains high owing to the immediate proximity of the capital and the municipal landfill site, which is planned for expansion in the near future.
First record of dicephalism in the four-lined snake Elaphe quatuorlineata Lacépède, 1789 (Serpentes: Colubridae) from Montenegro
Authors: Gvozdenović Slađana , Čavor Nikola
Published: December 2023

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Favna nočnih metuljev (Lepidoptera) na izbranih osvetljenih cerkvah v Sloveniji
Authors: Jež Matjaž , Zakšek Valerija , Štanta Radovan , Zadravec Bojan , Verovnik Rudi
Published: December 2023

The negative impact of light pollution on moths is a well-known but under-studied phenomenon. In the 2011-2013 period, the moth fauna on illuminated parts of facades on 15 selected churches from different biogeographical regions of Slovenia and at a mountain cottage on Sabotin hill was studied. In total, 609 species of moths were recorded, which is approximately 20% of all moth species known from Slovenia. The largest number of species was recorded at Koritno in Pohorje Mts (214 species) and at the mountain hut on Sabotin (213 species). This location also hosted the largest number of threatened moth species in Slovenia, as eight out of the total of 18 species were recorded there. The main reason for such diversity is presence of undisturbed habitats in the vicinity, and partly absence of light pollution, as the hut had never been illuminated prior to our survey. Our observations confirm that the light pollution affects large number of moth species and should therefore be limited by suitable legislation and carried out in practice. In addition, we provide data on distribution of some rare species found during the survey and before.
Recent ostracods (Crustacea: Ostracoda) of Alpine springs and adjacent springbrooks of the Southern Limestone Alps, Slovenia
Authors: Mori Nataša
Published: December 2023

The ecology and distribution of ostracods in Alpine springs and springbrooks from Slovenia is presented. Benthos sampling was performed and major environmental characteristics (discharge, substrate composition, temperature, dissolved oxygen, conductivity, pH, alkalinity, sulphate, nitrate, calcium, magnesium) were measured in 12 springs and adjacent springbrooks. Sampling campaign was carried out on six sampling occasions (spring, summer, autumn in 2009 and 2010). Fourteen ostracod species were found among other fauna. The commonest and most abundant species were Psychrodromus fontinalis (Wolf, 1920) and Cavernocypris subterranea (Wolf, 1920), while the other species occurred at one or two sites at the most. Substrate composition and water temperature were statistically significant variables in explaining ostracod assemblages composition in this study.
Found after 60 years: the hows and whys of Sphaeromides virei montenigrina (Crustacea: Isopoda: Cirolanidae) rediscovery in Obodska pećina, Montenegro
Authors: Delić Teo , Sket Boris
Published: December 2023

Despite being the biggest isopod crustacean in Dinarides, little is known about the genus Sphaeromides and its taxonomical status. Sphaeromides virei montenigrina, one of the three subspecies, has been known only thanks to a female specimen found and described in the late 1950s. Despite the intensive search, almost 60 years were needed to discover additional specimens in the cave Obodska pećina, Montenegro. In this study we present a review of the possible reasons for this long lasting search.
New record of Bechstein’s bat Myotis bechsteinii (Kuhl, 1817) in NE Slovenia
Authors: Kotnik Jasmina
Published: December 2023

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International workshop »SOS PROTEUS: Implementation of monitoring and practical actions for the conservation of Proteus in Slovenia«
Authors: Aljančič Gregor , Aljančič Magdalena
Published: December 2023

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Genetic monitoring of Proteus populations
Authors: Trontelj Peter , Zakšek Valerija
Published: December 2023

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Application of environmental DNA for detection of Proteus
Authors: Stanković David , Gorički Špela , Aljančič Magdalena , Snoj Aleš , Kuntner Matjaž , Aljančič Gregor
Published: December 2023

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Surveys of butterfly and skipper fauna in the southwestern part of the Republic of Macedonia (Lepidoptera: Papilionoidea & Hesperioidea)
Authors: Švara Vid , Popović Miloš , Peternel Andrej , Radevski Đorđe , Vukotić Kaja , Verovnik Rudi
Published: December 2023

Data from four surveys within the last six years were combined in order to improve the knowledge of the butterfly distribution in the Republic of Macedonia. These surveys covered a total of 40 localities, with special emphasis on less sampled areas of the south-western part of the country. The study yielded recording of 131 species, including several habitat specialist and potentially threatened butterflies. Interesting records for the following species are discussed in detail: Muschampia tessellum, Anthocharis gruneri, Euchloe penia, Tarucus balkanicus, Cupido alcetas, Pseudophilotes bavius, Polyommatus aroaniensis, Polyommatus escheri, Araschnia levana and Melitaea ornata. Ten species observed are considered threatened at the European level and 18 of them at the country level. This proves high conservation value of the studied region with many butterfly rich habitats still preserved. The lack of concerted effort for mapping of butterfly fauna in Macedonia is discussed and priorities for future surveys given.
Microbial and parasitic threats to proteus
Authors: Kostanjšek Rok , Gunde Cimerman Nina , Bizjak Mali Lilijana
Published: December 2023

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The threshold concentration for nitrate in groundwater as a habitat of Proteus anguinus
Authors: Kolar Boris
Published: December 2023

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Comparative analysis of hematological parameters in wild and captive Proteus anguinus
Authors: Gredar Tajda , Prša Patrik , Bizjak Mali Lilijana
Published: December 2023

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