bluuebunny/crossref_metadata_2025 huggingface dataset:
Isotope Detection by Microwave-Assisted Laser-Induced Breakdown Spectroscopy
Authors: Viljanen J. , Alamri A. A. , Alwahabi Z. T.
Published: October 2023

Microwave-Assisted Laser-Induced Breakdown Spectroscopy (MW-LIBS) is introduced for isotope detection utilizing molecular emission from the microwave-maintained plasma plume. The 11B/10B and 35Cl/37Cl fractions are measured using emission from di- and tri-atomic molecules.
Coherent Control of Quantum Cascade Laser Frequency Combs via External Cavity Optical Feedback
Authors: Kosan Nicholas , Huang Baichuan , Wysocki Gerard
Published: October 2023

We demonstrate improved comb coherence and generation of harmonic comb states in quantum cascade laser frequency combs with external cavity optical feedback injection.
Piezo-Luminescence Based ZnS:Mn/Polyurethane Blended Thin Films for Energy Conversion Applications
Authors: Sharma Pallavi , Tyagi Sachin , Pal Sudipta Sarkar
Published: October 2023

This study is focused on the fabrication and testing of piezo-luminescent ZnS:Mn/PU composite thin film coated disc for self-powdered optical devices based on the mechano-luminescence phenomenon.
An EO-based Service Supporting the Identification of Heat Mitigation Measures in Cities
Authors: Bayer Anita D. , de la Fuente Daruich Lucas , Holsten Stephan , dall’Amico Johanna T.
Published: October 2023

We present a model linking EO data-derived land surface temperature and urban characteristics. It underlies a service allowing city administration users to explore urban heat patterns for user-defined configurations and to identify heat mitigation measures.
New Quantum Cascade Laser package for Heterodyne Phase Sensitive Dispersion Spectroscopy with High Performance in Free Space
Authors: Mánguez-Martín Roberto , Giraud Etienne , Bonilla-Manrique Oscar , Moreno-Oyervides Aldo , Waclawek Johannes Paul , Moser Harald , Lendl Bernhard , Martín-Mateos Pedro
Published: October 2023

We present a heterodyne phase sensitive dispersion spectroscopy instrument, based on a new QCL package, capable of providing, for the first time, high levels of performance at ambient pressure, thus, enabling free space gas analysis.
Denoised MEMS FTIR Spectral Sensor
Authors: Adib George A. , Sabry Yasser M. , Mortada Bassem , Shaheen Amir K , Khalil Diaa
Published: October 2023

A denoising technique based on discrete wavelet transform is adapted and applied on MEMS-based FTIR spectral sensors. The SNR enhancement varies across the spectral range of operation achieving better than 2x at the lower wavelength range with a slight change in resolution.
Measurement of Oil Mist in High-Pressure Natural Gas Pipelines Using an Optimized Optical Particle Counter
Authors: Wang Deyu , Ji Zhongli , Liu Zhen , Lin Guangyao
Published: October 2023

Based on Gaussian optical theory, an optimized optical particle counter was used to measure the oil mist concentration in high-pressure natural gas pipelines, and the results showed that the error was within 4%.
Active Nanoscale Engineering of 3D Plasmonic Hotspots for SERS-based Optical Sensing Applications
Authors: Lee Soo-Hyun , Mun ChaeWon , Park Sung-Gyu
Published: October 2023

Ultrasensitive optical sensing platform through electrosynthesis of plasmonic-molecule nanocomposites is proposed. Bottom-up growth of metal nanostructures in presence of molecules intensifies light–matter interactions by full utilization of metal-molecule intimacy across entire 3D architecture of nanocomposites.
Split ring multiband refractive index cancer sensor based on terahertz radiation
Authors: Li Zhengzheng
Published: October 2023

A design of a multiband terahertz (THz) metamaterial biosensor for early cancer detection is proposed. The THz biosensor composed of several arc-shaped connecting parts operates at three different frequencies, and the absorptivity of the three resonant frequencies exceeds 99% in free space. In this work, we analyzed the absorption spectrum and polarization independence under different design parameters, improved the performance of the sensor by adjusting the absorption characteristics of the sensor, and gave the calculation results. Additionally, we studied the influence of the refractive index and thickness of different samples on the sensor, and theoretically calculated the sensitivity of the sensor to basal cells, breast cells, cervical cells, and their corresponding cancer cells. The result shows that the maximum sensitivity of the sensor can reach 642.5 GHz/RIU, which is much higher than the reported biosensors. Therefore, the proposed THz sensor has great potential in early detection and early warning of cancer.
In-situ measurement of NOx emissions from an industrial boiler using a QCL-based sensor
Authors: Duan Kun , Ji Yongbin , Wen Daxin , Guo Songjie , Yao Shunchun , Xu Ke , Zhang Xiang , Huang Zhiming , Ren Wei
Published: October 2023

We report a field-deployable QCL-based sensor for in-situ monitoring of NOx emissions. We measured ppm-level NOx emissions from a 2.8-MW gas-fired industrial boiler using this sensor.
Mid-infrared quartz-enhanced photoacoustic gas sensor with a continuously swept optical cavity
Authors: Nie Qinxue , Wang Zhen , Ren Wei
Published: October 2023

We present an ultra-sensitive and high-resolution spectrometer based on the swept-cavity quartz-enhanced photoacoustic spectroscopy. A dual-feedback Pound-Drever-Hall locking method is developed for locking a quantum cascade laser to a continuously swept optical cavity.
A Portable and Miniaturized, Frequency Comb-Calibrated, Laser Heterodyne Radiometer for Atmospheric CO2 monitoring
Authors: Moreno-Oyervides Aldo , Bonilla-Manrique Oscar E. , García Omaira , Martin-Mateos Pedro
Published: October 2023

An LHR approach, combining a remarkably high level of portability and frequency comb calibration, is evaluated for the first time in urban areas for ground-based monitoring of atmospheric CO2 (easily adaptable for other greenhouse gases).
Quantum Cascade Laser Spectrometer for Precise Measurements of 13CH3D and 12CH2D2
Authors: Prokhorov Ivan , Tuzson Béla , Li Gang , Ebert Volker , Kueter Nico , Bernasconi Stefano M. , Emmenegger Lukas , Mohn Joachim
Published: October 2023

Simultaneous measurements of the five most abundant methane isotopologues is demonstrated using a quantum cascade laser spectrometer. The instrument enables rapid and high-precision analysis of Δ13CH3D and Δ12CH2D2 in the natural methane samples.
FTS Based on MIR Supercontinuum Sources for Trace Gas Detection
Authors: Khodabakhsh A. , Krebbers R. , van Kempen K. , Bang O. , Petersen C. R. , Cristescu S. M.
Published: October 2023

Mid-infrared supercontinuum sources can provide a broad spectral bandwidth in the molecular fingerprint region, making them very attractive for multispecies trace gas detection. We demonstrate our recent developments in combining these sources with FTS.
Laser induced luminescence observation using a lightweight do-it-yourself hyperspectral camera for Unmanned Aerial Vehicle based applications
Authors: Mustafa H. , Bartholomeus H. , Kooistra L.
Published: October 2023

As part of the EU H2020 I-Seed project, a do-it-yourself hyperspectral imager was developed in combination with near-infrared diode laser to detect and localize the laser-induced luminescence emitted from artificial seeds to monitor air-above-soil parameters.
On-chip liquid sensing using mid-IR plasmonics
Authors: Hinkov Borislav , David Mauro , Pilat Florian , Schwaighofer Andreas , Marschick Georg , Arigliani Elena , Souza Patricia Lustoza , Doganlar Ismail C. , Gsodam Xaver , Dabrowska Alicja , Wacht Dominik , Sistani Masiar , Nazzari Daniele , Disnan Davide , Detz Hermann , Andrews Aaron M. , Schmid Ulrich , Weber Walter M. , Schwarz Benedikt , Lendl Bernhard , Strasser Gottfried
Published: October 2023

We present recent progress in monolithic mid-infrared photonic integrated circuits (PICs) for sensitive and selective real-time analysis of liquids. Our lab-on-a-chip spectrometers are based on quantum cascade (QC) technology using advanced plasmonic sensing schemes. We further demonstrate surface-passivation/-functionalization and on-chip beam guiding capabilities for future complex PIC geometries.
Droplet-based Opto-microfluidic Device for Microplastic Sensing in Aqueous Solutions
Authors: Bragato Giovanni , Perfetti Emanuele , Marchetti Simone , Sada Cinzia
Published: October 2023

Identifying microplastics is a key step to reduce their impact on the ecosystems as serious pollution source. We propose an opto-microfluidic device able to detect the presence of plastic microspheres when dispersed in water droplets.
INDI: A Prototype Optical Sensor for Measuring Upper Thermospheric Dynamics from a Smallsat
Authors: Harlander John M. , Laut Sophie P.
Published: October 2023

The Interferometer for Neutral-Thermosphere Dynamics Imaging (INDI) is an Earth limb viewing optical sensor employing a Doppler Asymmetric Spatial Heterodyne interferometer to obtain red-line (630 nm) thermospheric winds between altitudes of 200 and 300 km.
Development and Integration of a Cryogenic Far-infrared Post-dispersed Polarizing Fourier Transform Spectrometer
Authors: Buchan Matthew A. , Naylor David A. , Gom Brad G. , Christiansen Adam J. , Anderson Alicia M. , Cournoyer Alain , Carbonneau Éric , Larouche Martin
Published: October 2023

The development status of a cryogenic far-infrared post-dispersed polarizing Fourier transform spectrometer is presented. Results will inform the design of such hybrid spectrometers proposed for future astronomical space observatories.
Dual-comb spectroscopy using a single electro-optic modulator
Authors: Durán Vicente , Soriano-Amat Miguel , Martin-Lopez Sonia , Martins Hugo. F. , Fernández-Ruiz María R. , Gonzalez-Herraez Miguel
Published: October 2023

We show that a single electro-optic modulator driven by tailored electrical waveforms can generate a dual-comb spectrum. The resulting system is a remarkably robust spectroscopic tool with the potential to be exploited in field applications.
Using solar-viewing FTS observations to inform spectroscopic parameters
Authors: Laughner Joshua L. , Toon Geoffrey C. , Roehl Coleen M. , Wunch Debra , Wennberg Paul
Published: October 2023

Accurate information on molecular absorption line parameters is crucial to accurately interpret remotely sensed observations of atmospheric composition. We show how ground-based, solar-viewing FTS data can identify and address errors in laboratory-derived line parameters.
Low-Signal Phase Shift: Characterizing an Unexpected Detector Deterioration of the ICON/MIGHTI Instrument
Authors: Englert Christoph R. , Harlander John M. , Harding Brian J. , Marr Kenneth D.
Published: October 2023

The Michelson Interferometer for Global High Resolution Thermospheric Imaging (MIGHTI) successfully measured thermospheric winds onboard the NASA ICON mission. We present an unexpected detector deterioration and its on-orbit characterization using calibration lamps.
Towards deep UV spectroscopy with a single-cavity thin-disk based dual-comb spectrometer
Authors: Hofer Tobias , Hehl Gregor , Fritsch Kilian , Pronin Oleg
Published: October 2023

We present a Megawatt-level peak power dual-comb oscillator with excellent mutual noise suppression thanks to the single-cavity design. The power-scalable thin-disk oscillator enables nonlinear frequency conversion and high-resolution spectroscopy in deep UV.
Frequency comb ptychoscopy
Authors: Burghoff David
Published: October 2023

The structure of frequency combs, evenly-space light sources, allows for novel strategies in the measurement of optical signals. We discuss ptychoscopy, a method that blends the resolution of heterodyne spectroscopy with the bandwidth of combs.
OzFuel: A Space-based Forest Fuel Flammability Monitoring Mission
Authors: Younes Nicolas , Yebra Marta , Sharp Robert
Published: October 2023

OzFuel (Australian Fuel Monitoring from Space) is a bushfire mitigation satellite mission aimed at improving Australia’s pre-fire monitoring, prediction, preparation, response and resilience. We present a summary of the work done during Phase A of the project.
Rapid assessment of landfill pollution using hyperspectral and multispectral satellite imageries: a comparative study for Bhalswa municipal solid waste site, New Delhi, India
Authors: Dutta Amitava , Lall Brejesh , Sharma Shilpi
Published: October 2023

The study highlights the efficiency of various current generation hyperspectral satellites over traditional multispectral images for pollution assessment at Bhalswa landfill in New Delhi using six selected spectral indices and a composite risk score map.
The NASA Biodiversity Survey of the Cape (BioSCape)
Authors: Hestir Erin L. , Wilson Adam , Cardoso Anabelle , Slingsby Jasper , Forbes Cherie
Published: October 2023

NASA’s first-ever Biodiversity campaign will fly in 2023. Three imaging spectrometers and a lidar onboard two aircraft and a team of over 100 scientists will converge to advance remote sensing of terrestrial and aquatic biodiversity.
First year EnMAP radiometric performance based on scenes over RadCalNet and PICS sites
Authors: Pato M. , Bachmann M. , de los Reyes R. , Alonso K. , Baur S. , Gerasch B. , Holzwarth S. , Langheinrich M. , Marshall D. , Schneider M. , Schwind P. , Witt H. , Brell M. , Chabrillat S. , Carmona E.
Published: October 2023

The radiometric performance of EnMAP is presented based on scenes over RadCalNet and PICS sites acquired during the first year since launch. The results show the typical accuracy and stability attainable by EnMAP radiometric products.
Multispectral Terrestrial LiDAR: Towards Improved Distance Estimation Accuracy
Authors: Malkamäki Tuomo , Kaasalainen Sanna
Published: October 2023

Distance precision in multispectral LiDAR is approaching levels where accurate modeling of system nonidealities is required. These models affect how distance can be fused from multiple channels. We present some findings and review of challenges,
Evaluation of water quality products generated from hyperspectral PRISMA images
Authors: M. Bresciani , A. Fabbretto , A. Pellegrino , F. Braga , K. Alikas , D. Vaičiūtė , Lima  , T.M.A.d  , N. Ghirardi , S. Mangano , C. Giardino
Published: October 2023

This study shows an evaluation of water quality products obtained with three different approaches from hyperspectral images distributed worldwide, the results are promising and encourage the use of PRISMA data for aquatic applications.
Aquatic Applications of SuperDove Imagery
Authors: Vanhellemont Quinten
Published: October 2023

The performance of the metre-scale SuperDove constellation is evaluated for water applications using measurements from a PANTHYR autonomous in situ hyperspectral radiometer. Turbid water chlorophyll a absorption is retrieved in the Belgian coastal zone.
Operational quality control for spaceborne hyperspectral sensors – examples for the spectral performance assessment of DESIS and EnMAP
Authors: Bachmann M. , Alonso K. , Baur S. , Brell M. , Gerasch B. , Guanter L. , Habermeyer M. , Heiden U. , Holzwarth S. , Langheinrich M. , Marshall D. , Pato M. , de los Reyes R. , Schneider M. , Schwind P. , Witt H. , Storch T. , Chabrillat S. , Carmona E.
Published: October 2023

The methods and results of the operational spectral property assessment of the spaceborne imaging spectrometers DESIS and EnMAP are presented. Using thousands of Earth datatakes, the stable performance within requirements of both missions is demonstrated.
Atmospheric turbulence effects on hollow Gaussian Schell-model array beams
Authors: Shi Xiaohui , Mei Zhangrong , Mao Yonghua
Published: October 2023

Two types of hollow array beams with circular and rectangular distributions on propagating in atmospheric turbulence are investigated and analyzed comparatively with that in free space. Analytical formulas for the cross-spectral density function of two kinds of hollow array beam propagation in linear isotropic random media are derived and used to examine the behavior of the spectral densities. It is found that such beams possess stable hollow arrays with any dimension and lobes in free space, while such distributions only maintain small distances in atmospheric turbulence and ultimately tend to a Gaussian shape due to the turbulence destroying the hollow array profiles. The effects of the turbulence parameters on the behavior of the spectral density are analyzed in depth.
Ultra-compact all-optical half-adder based on inverse design
Authors: Zhang Zhigang , Yang Hongfeng , Luo Mingyu
Published: October 2023

The all-optical half-adder is an important module in integrated photonics, which can be used to realize optical computing and optical communication. At present, the all-optical half-adder implemented by traditional methods cannot easily be further compressed in size, which also limits the development of its integration. In this paper, four optical devices, the power beam splitter, waveguide cross, XOR gate, and AND gate, are designed by the inverse design method. Their footprint is only 2µm×2µm, and they have extremely low insertion loss and high contrast ratio. These devices are further interconnected with waveguides to realize an all-optical half-adder module with a size of only 10µm×4.5µm. When working at 1550 nm, the module exhibits contrast ratios of 14.47 dB and 5.14 dB for SUM and CARRY, respectively. These photonic devices have the characteristics of ultra-compact size and high performance, rendering them highly valuable for photonic integrated circuits.
High-sensitivity force sensing using a phonon laser in an active levitated optomechanical system
Authors: He Yutong , Feng Zijian , Jing Yuwei , Xiong Wei , Chen Xinlin , Kuang Tengfang , Xiao Guangzong , Tan Zhongqi , Luo Hui
Published: October 2023

Force detection with high sensitivity is of paramount importance in many fields of study, from gravitational wave detection to investigations of surface forces. Here, we propose and demonstrate a force-sensing method based on gain-enhanced nonlinearity in a nonlinear phonon laser. Experimental and simulation results show that the input force leads to the frequency shift of phonon laser, due to nonlinearity. In addition, we further investigate the influences of the pumping power, numerical aperture, and microsphere’s refractive index on the performance of this force-sensing system, regarding the sensitivity and the linear response range. Our work paves a new way towards the realization of precise metrology based on the nonlinearity of phonon laser.
High external quantum efficiency (6.5%) InGaN V-defect LEDs at 600 nm on patterned sapphire substrates
Authors: Ewing Jacob J. , Lynsky Cheyenne , Wong Matthew S. , Wu Feng , Chow Yi Chao , Shapturenka Pavel , Iza Michael , Nakamura Shuji , Denbaars Steven P. , Speck James S.
Published: October 2023

Highly efficient long-wavelength InGaN LEDs have been a research focus in nitride LEDs for their potential applications in displays and solid-state lighting. A key breakthrough has been the use of laterally injected quantum wells via naturally occurring V-defects which promote hole injection through semipolar sidewalls and help to overcome the barriers to carrier injection that plague long wavelength nitride LEDs. In this article, we study V-defect engineered LEDs on (0001) patterned sapphire substrates (PSS) and GaN on (111) Si. V-defects were formed using a 40-period InGaN/GaN superlattice and we report a packaged external quantum efficiency (EQE) of 6.5% for standard 0.1 mm2. LEDs on PSS at 600 nm. We attribute the high EQE in these LEDs to lateral injection via V-defects.
Bogoliubov polaritons mediated strong indirect interaction between distant whispering-gallery-mode resonators
Authors: Zhang Guanghui , Du Qiujiao , Zheng Anshou , Chen Hongyun
Published: October 2023

We propose a method to achieve a strong indirect interaction between two distant whispering-gallery-mode (WGM) resonators in a hybrid quantum system at room temperature, even when the distance between them exceeds 40 wavelengths. By exploiting the quantum critical point, we can greatly enhance both the effective damping rate and the coupling strengths between a WGM resonator and a low-frequency polariton. We introduce a large effective frequency detuning to suppress the effective damping rate while maintaining the enhanced coupling strength. The strong indirect interaction between separated WGM resonators is mediated by a far-off-resonant low-frequency polariton through virtual excitations in a process similar to Raman process. This proposal provides a viable approach to building a quantum network based on strongly coupled WGM resonators.
Multiple flatbands and localized states in photonic super-Kagome lattices
Authors: Song Limin , Gao Shenyi , Ma Jina , Tang Liqin , Song Daohong , Li Yigang , Chen Zhigang
Published: October 2023

We demonstrate multiple flatbands and compact localized states (CLSs) in a photonic super-Kagome lattice (SKL) that exhibits coexistence of singular and nonsingular flatbands within its unique band structure. Specifically, we find that the upper two flatbands of an SKL are singular—characterized by singularities due to band touching with their neighboring dispersive bands at the Brillouin zone center. Conversely, the lower three degenerate flatbands are nonsingular and remain spectrally isolated from other dispersive bands. The existence of such two distinct types of flatbands is experimentally demonstrated by observing stable evolution of the CLSs with various geometrical shapes in a laser-written SKL. We also discuss the classification of the flatbands in momentum space, using band-touching singularities of the Bloch wave functions. Furthermore, we validate this classification in real space based on unit cell occupancy of the CLSs in a single SKL plaquette. These results may provide insights for the study of flatband transport, dynamics, and nontrivial topological phenomena in other relevant systems.
Temperature-related single-photon transport in a waveguide QED
Authors: Yan Wei-Bin , Man Zhong-Xiao , Zhang Ying-Jie , Xia Yun-Jie
Published: October 2023

We propose a scheme to realize a novel, to the best of our knowledge, scenario that the single-photon transport in a one-dimensional waveguide can be affected by the temperature. The scheme is composed by a waveguide–atom interacting structure linked to a thermal bath. The single-photon reflection (or transmission) coefficient can be controlled by adjusting the temperature of the thermal bath. This provides a thermal control of the single-photon transport. Moreover, the scheme provides an approach for implementing the optical thermometer, in which the temperature of the thermal bath is estimated by measuring the photonic transport. The thermometer can accurately measure the temperature in the low-temperature region.
High-Speed Pyroelectric Detector for THz Sensing and Spectroscopy
Authors: Baliga Shankar , Kunsch Johannes , Köhler Reinhard
Published: October 2023

Pyroelectric infrared detectors are used in spectroscopy at relatively high modulation frequencies and long wavelengths out to THz. This paper describes a robust detector that provides higher performance in a scalable, disruptive sensing technology.
Portable and Attachable Terahertz Sensor Patch Toward On-Site Non-Destructive Diagnosis
Authors: Suzuki Daichi
Published: October 2023

In this paper, we present the device design of the portable and attachable terahertz sensor patch and the sensing applications with a high degree of measurement freedom toward on-site non-destructive diagnosis.
Compact Nitrogen Vacancy (NV) sensor platform for NMR applications using dynamical decoupling sequences
Authors: Hidalgo Fernando , López Saul , Torrontegui Erik , Casanova Jorge , Acedo Pablo
Published: October 2023

A quantum sensing platform based on ensembles of nitrogen-vacancy (NV) centers for NMR applications is proposed, including the required dynamical decoupling sequences necessary to achieve the target high spectral resolution for the magnetic field measurement.
Microfluidic Fabrication of Polymeric Microspheres Doped with Quantum Dots for Biosensors
Authors: Kurassova K. , Filatov N. A. , Alexan G. , Dadadzhanova A. I. , Dadadzhanov D. R. , Toropov N. A. , Vartanyan T. A.
Published: October 2023

Polyacrylamide microspheres doped with AgInS/ZnS quantum dots were fabricated via microfluidics dripping method. The average size of microspheres is 68 µm that is suitable for the whispering gallery mode excitations and further use as biosensors.
Quantum interferometer using a Hollow-Core Fibre
Authors: Produit Thomas , Chakraborty Tanmoy , Deng Ang , Chang Wonkeun , Paterova Anna V.
Published: October 2023

Here, we report the successful use of an Antiresonant Hollow-Core Fibre (AR-HCF) section in a quantum interferometer. This enhances the toolset available to quantum interferometer for sensing in the mid-infrared region.
Monitoring Sag in Overhead Transmission Lines Using Chirped-Pulse Phase-Sensitive OTDR
Authors: Canudo Jorge , Sevillano Pascual , Iranzo Andrea , Kwik Sacha , Preciado-Garbayo Javier , Subías Jesús
Published: October 2023

The capacity of overhead transmission lines is determined by physical properties and worst-case weather scenarios. Real-time sag monitoring enables dynamic capacity configuration and improved safety. Distributed acoustic sensing using CP-ΦOTDR measures cable vibrations, allowing sag calculation and monitoring with a single-end interrogator.
Interior hotspot engineering for rapid SERS recognition of infectious diseases
Authors: Lee Soo Hyun , Ansah Iris Baffour , Lee Won-Chul , Yang Jun-Yeong , Mun ChaeWon , Lee Seunghun , Kim Dong-Ho , Park Sung-Gyu
Published: October 2023

Biomaterials surrounded by novel metals function as interior hotspots for sensitive surface-enhanced Raman spectroscopy sensing. Here, we will introduce the engineering technique for interior hotspots embedded with lysates and rapid recognition of respiratory diseases.
Using Fiber Optic Sensor to Map Temperature Non-Uniformities in Light-driven Process Catalyst Beds
Authors: Xu Man , Cheng Lun , Hartog Tim den , Habets Roberto , Rohlfs Jelle , van den Ham Jonathan , Meulendijks Nicole , Sastre Francesc , Buskens Pascal
Published: October 2023

Distinguishing between photothermal and non-thermal contributions is essential in light-driven chemical processes. Use of a tailored optical temperature sensor based on fiber Bragg gratings enabled us to obtain an accurate temperature map of an illuminated plasmonic catalyst bed with high spatiotemporal resolution. This demonstrates that accurate multi-point temperature measurements are a prerequisite for a correct interpretation of catalysis results of light-powered chemical reactions.
Time Response Evaluation of Aluminum Thin Film Corrosion by Sea-water Using Hetero-core Fiber Optic Surface Plasmon Resonance Sensor
Authors: Kang Dowon , Watanabe Kazuhiro , Nishiyama Michiko
Published: October 2023

A hetero-core optical fiber corrosion detection sensor with Au/Ta2O5/Al multilayer deposition is proposed based on surface plasmon resonance. The proposed sensor detected the process of corrosion of the outermost 3 nm Al layer.
Engineering Light with Mid-Infrared Metasurfaces for Sensing and Imaging Applications
Authors: Dao Thang Duy , Andrianov Nikolai , Chouiki Mustapha , Munir Azeem Syed , Spettel Jasmin , Dubois Florian , Fleury Clement , Pilz Julian , Moridi Mohssen , Vojkůvka Lukáš
Published: October 2023

Engineered at the subwavelength scale, mid-infrared metasurfaces offer unprecedented control over light-matter interactions. This presentation will explore their potential for mid-infrared sensing and imaging applications.
Detection of environmental gas compositions with shifted-excitation fibre-enhanced Raman difference spectroscopy
Authors: Kutz Tim , Niklas Chrstian , Koch Jan , Schippers Wolgang , Wackerbarth Hainer , Ctistis Georgios
Published: October 2023

We present current work on a gas sensor system based on a combination of fibre-enhanced Raman spectroscopy and Fibre-Bragg-Grating. Furthermore, we exploit the possibilities to improve the signal-to-noise ratio by shifted excitation Raman difference spectroscopy.
Nanoporous Silver Membrane as a Versatile Surface Enhanced Raman Scattering based Sensing Platform
Authors: Yadav Arti , Vishwakarma Rohit Kumar , Srivastava Sachin Kumar
Published: October 2023

We report experimental studies on development and use of a nanoporous silver membrane fabricated using oblique angle deposition as a label free SERS sensor platform and demonstrate model sensing of 4-Aminothiophenol up to nanomolar concentrations.
Open-cavity Mach-Zehnder Interferometer Sensor Formed by Photonic Crystal Fiber and Polished Pencil-shaped SMF
Authors: Wong Pei-Jhen , Yu Ching-Ping
Published: October 2023

We propose an open-cavity Mach-Zehnder interferometer by splicing a PCF with a polished pencil-shaped SMF. It is shown that the gas can be successfully filled into the open cavity, and the pressure sensitivity is -67.86pm/psi.
Quantitative Measurement of Strain Fields by High Resolution Dynamic Optical OFDR System
Authors: Travers Pierre , Charliac Clément , Ghobrel Inès , Kemlin Vincent , Crozatier Vincent , Leguillon Yohann , Louf François , Boucard Pierre-Alain
Published: October 2023

A metal plate is instrumented by an optical fiber, serving as a sensor. For each plate eigenmode, we compare the computed strain experienced by the fiber to measurements using a high resolution dynamic ϕ-OFDR interrogator.
Hybrid Homodyne Digital Interferometry
Authors: Dey Anneshwa , Sibley Paul G. , Wong Justin , Zhang Ya , Gray Malcolm B. , Bandutunga Chathura P. , Chow Jong H.
Published: October 2023

We present a hybrid homodyne digital interferometry system that enables a phase sensitivity of
10−6rad/Hz, reduces code cyclic error and maintains a simple auto-correlation which makes it compatible with methods to minimise cross-talk.
Exploring Molecular Sensing in the Terahertz Range with a Flexible Platform Combining an Opto-Electronic Light Source and Hollow Waveguide Gas Cells
Authors: Theiner Dominik , Limbacher Benedikt , Jaidl Michael , Ertl Marie , Hlavatsch Michael , Unterrainer Karl , Mizaikoff Boris , Darmo Juraj
Published: October 2023

We present a frequency flexible platform for molecular sensing in the terahertz range combining an opto-electronic light source with novel compact gas cells. Sensing is demonstrated by measuring the rotational spectrum of nitrous oxide (N2O).
High-power mode-locked Ho:CALGO lasers at 2.1 µm
Authors: Yao Weichao , Wang Yicheng , Ahmed Shahwar , Hoffmann Martin , Saraceno Clara J.
Published: October 2023

We report watt-level average power, mode-locked Ho:CALGO bulk lasers with record power at 2.1 µm. With SESAM mode-locking, we demonstrate 8.7-W average power (369 fs) at 2118 nm at an optical-to-optical efficiency of 38.2%. Using soft-aperture KLM, we demonstrate 112-fs pulse duration at an average power of 1.1 W.
16 mJ 1.8-cycle pulses at 1 kHz repetition rate from single thin plate compression
Authors: Tóth Szabolcs , Csontos János , Lehotai Levente , Seres Imre , Börzsönyi Ádám , Osvay Károly , Nagymihály Roland S.
Published: October 2023

First results of the post-compression experiments with the SYLOS 2 laser system are presented, where a single thin plate spectral broadening stage is utilized. Spectrally broadened pulses with 16 mJ output energy are obtained, where dispersion compensation with custom chirped mirrors and fused silica results in 4.75 fs temporal duration.
Latest progress on the few-cycle, high average power lasers of ELI-ALPS
Authors: Borzsonyi A. , Cormier E. , Lopez-Martens R. , Kalashnikov M. , Kiss B. , Jojart P. , Seres I. , Csontos J. , Toth Sz. , Nagymihaly R.S. , Varju K. , Szabo G.
Published: October 2023

We report on the most recent progress of the few-cycle lasers of ELI-ALPS user facility, operating in the 100W average power regime, while peak powers and repetition rates range from 0.1TW at 100kHz up to PW at 10Hz.
Second and Third Harmonic Generation of Millimeter-Sized Zn(3-ptz)2 Metal-Organic Framework Crystals
Authors: Hidalgo-Rojas Diego , Rojas-Aedo Ricardo , Wheatley Robert A. , Enríquez Javier , Garcia-Garfido Juan M. , Herrera Felipe , Singh Dinesh P. , Seifert Birger
Published: October 2023

In this work we present for the first time the second and third harmonic generation of large, i.e., millimeter-sized non-centrosymmetric Zn(3-ptz)2 MOF crystals, which have recently been successfully produced at the University of Santiago of Chile and optically characterized at the Pontifical Catholic University of Chile.
Revisiting methods for triplet quantum yield determination with double pulse fluorescence excitation
Authors: de Q. Garcia Rafael , De Boni Leonardo
Published: October 2023

In this work, the theoretical modeling and experimental methodology concerning double pulse fluorescence experiments for measuring the triplet quantum yield of photoexcited molecules were improved. These contributions have made the technique more general, and more routinely available and were benchmarked on a class of newly synthesized porphyrins.
High Repetition Rate Materials Science Beamline at Artemis
Authors: Wyatt Adam S. , Zhang Yu , Sanders Charlotte E. , Chatterjee Gourab , Karras Gabriel , Michalek Ota , Chapman Richard T. , Poletto Luca , Greetham Gregory M. , Springate Emma
Published: October 2023

We present first results of the high-repetition-rate beamline for time- and angle-resolved photoelectron spectroscopy (Tr-ARPES). The laser parameters are 150-200 µJ energy at 100 kHz, 50-100 fs duration and tuneable wavelength of 1450-1850 nm or 250-3680 nm. The extreme ultraviolet probe parameters are 17-41 eV photon energy, 150 meV spectral, 70 fs temporal, and 35 µm spatial resolution.
New nonlinear crystals for ultrafast frequency conversion in the mid-infrared
Authors: Schunemann Peter G.
Published: October 2023

Improved all-epitaxial processing of orientation-patterned OP-GaAs and OP-GaP, advances in size and quality of ZnGeP2 and CdSiP2, and the advent of BaGa4S7, BaGa4S7, and their quaternary analogues, are extending ultrafast laser output deep into the mid-infrared. Here we report on growth, processing, properties, device performance, and search for new materials.
Amorphous oxide coatings for demanding laser science applications
Authors: Menoni Carmen S. , Davenport Aaron , Dehne Kristian , Wang Yong , Jankowska Elzbieta , Osovsky Ruth , Rocca Jorge J.
Published: October 2023

The most recent advances in amorphous oxide multilayer coatings for near infrared ultrafast lasers and ultrastable optical cavities are presented. Materials and coating architectures challenges to advance near infrared interference coatings to new performance heights and functionality are described.
Spatially and Temporally Chirped Beams: The Single Aperture Path to Exawatt Peak-Power Lasers
Authors: Chesnut Kyle D. , Barty Christopher P. J.
Published: October 2023

We describe a spatially and temporally chirped beam architecture with potential to create 20 kJ pulses with ~100 fs duration resulting in a 0.2 EW peak-power and focused intensity >1025 W/cm2. The various sub-systems, along with the spectral and spatial gain shaping required to maintain bandwidth during amplification, are presented.
500 mJ, 1 kHz, thin-disk multipass amplifier
Authors: Boge Robert , Szuba Wojchiech J. , Novák Jakub , Erdman Emily , Green Jonathan T. , Antipenkov Roman , Naylon Jack A. , Bakule Pavel , Rus Bedřich
Published: October 2023

We report on the progress on developing a high energy, 1030 nm, 1 kHz, picosecond thin-disk multipass amplifier. Combining thin-disk technology with an imaging setup allows for reliable operation with good beam quality. We address the key challenges of beam-distortion by the disk and gain clamping due to parasitic lasing.
Generation of Relativistic Electron Beams exceeding 500 keV by Direct Laser Acceleration using Longitudinal Electric Fields
Authors: Powell Jeffrey , Vallières S. , Payeur S. , Fourmaux S. , Fillion-Gourdeau F. , Belfio F. , Lassonde P. , Ibrahim H. , Jolly S. , MacLean S. , Légaré F.
Published: October 2023

We report on the generation of a relativistic electron beam exceeding 500 keV by direct laser acceleration in a low-density gas using longitudinal electric fields. The electron energy is measured as a function of laser intensity and gas species, revealing a strong dependence on the atomic ionization dynamics.
Multidrug-resistant E. coli encoding high genetic diversity in carbohydrate metabolism genes displace commensal E. coli from the intestinal tract
Authors: Connor Christopher H. , Zucoloto Amanda Z. , Munnoch John T. , Yu Ian-Ling , Corander Jukka , Hoskisson Paul A. , McDonald Braedon , McNally Alan
Published: October 2023

Extra-intestinal pathogenic Escherichia coli (ExPEC) can cause a variety of infections outside of the intestine and are a major causative agent of urinary tract infections. Treatment of these infections is increasingly frustrated by antimicrobial resistance (AMR) diminishing the number of effective therapies available to clinicians. Incidence of multidrug resistance (MDR) is not uniform across the phylogenetic spectrum of E. coli. Instead, AMR is concentrated in select lineages, such as ST131, which are MDR pandemic clones that have spread AMR globally. Using a gnotobiotic mouse model, we demonstrate that an MDR E. coli ST131 is capable of out-competing and displacing non-MDR E. coli from the gut in vivo. This is achieved in the absence of antibiotic treatment mediating a selective advantage. In mice colonised with non-MDR E. coli strains, challenge with MDR E. coli either by oral gavage or co-housing with MDR E. coli colonised mice results in displacement and dominant intestinal colonisation by MDR E. coli ST131. To investigate the genetic basis of this superior gut colonisation ability by MDR E. coli, we assayed the metabolic capabilities of our strains using a Biolog phenotypic microarray revealing altered carbon metabolism. Functional pangenomic analysis of 19,571 E. coli genomes revealed that carriage of AMR genes is associated with increased diversity in carbohydrate metabolism genes. The data presented here demonstrate that independent of antibiotic selective pressures, MDR E. coli display a competitive advantage to colonise the mammalian gut and points to a vital role of metabolism in the evolution and success of MDR lineages of E. coli via carriage and spread.
Plant parentage influences the type of timber use by traditional peoples of the Brazilian Caatinga
Authors: Pedrosa Kamila Marques , Ramos Maiara Bezerra , La Torre-Cuadros María de los Ángeles , Lopes Sérgio de Faria
Published: October 2023

Local populations select different plants to meet their demands, so that morphologically similar species can be more used for a given use. Herein, we seek to understand whether plant species that are phylogenetically closer together are used more similarly than distant species in the phylogeny. Ethnobotanical data were collected in five rural communities in a semi-arid region of Brazil. A total of 120 local experts were selected and interviewed using semi-structured questionnaires. The people’s knowledge of plants was organized into usage subcategories. We estimated the redundancy values for the mentioned species, and we compiled data from the literature on the wood density values of the cited species. We constructed our phylogenetic hypothesis of useful plants and used comparative phylogenetic methods to estimate the signal. Our results showed a strong phylogenetic grouping for both tool handle and craft uses. We observed a moderate phylogenetic grouping in which related cited plants exhibit similar redundancy and a weak grouping in which cited plants present similar wood density values. Our results revealed the importance of using phylogeny for useful plants. We conclude the phylogenetic proximity of useful plants and the lower redundancy for some species in our study may suggest greater use pressure, given that few species fulfill the same function.
A study on the mode choice of large-scale households’ farmland transfer-in in rural China: Based on the economic analysis paradigm of transaction costs
Authors: He Guoping , Xiao Taofen
Published: October 2023

Regarding the mode choice of farmland transfer, the existing literature have more examined the choices between market-based transfer (spontaneous transfer) and government or village committee-led transfer, and between formal contract and informal contract. However, the question that how the two parties choose among various specific transfer modes has not attracted extensive attention of scholars. Based on contract theory and transaction cost economics, this paper uses the public samples of the third national agricultural census data to investigate how large-scale households choose among the specific transfer modes when transferring into farmland, like the transfer of the contracted management right (TCMR), lease and shareholding. The findings of this paper are as follows. Firstly, with the increase in the transfer-in area and the education level of the household head, the probability of choosing lease and shareholding increases relatively, but the latter rises faster. Secondly, compared with large-scale farmers whose aim is to plant crop, the probability of those who transfer into farmland for gardening and forestry operation choosing shareholding has increased significantly. Thirdly, the age of the household head and the number of household laborers have an interactive effect on the mode choice of transferring into farmland. In addition, the mode choice of large-scale households’ transferring into farmland is also significantly affected by environmental factors such as local topography, irrigation, traffic conditions, industrial structure, and social security development. Therefore, adhering to the parties to choose the mode of farmland transfer independently is crucial. The government and rural grassroots organizations should help the parties to understand the characteristics, adaptability and supply and demand of different modes, and help the parties to explore the most economical mode. The contribution of this paper is that it expands the study of the transfer of rural land rights to the choices of specific transfer modes, and partially reveals the rule of choices, which provides a reference for the parties to choose the most efficient transfer mode under different conditions and for the government and rural grassroots organizations to play a role.
Mental health survey among front-line medical workers after 2 years of supporting COVID-19 efforts in Hubei Province
Authors: Meng Xianfeng , Wang Yan , Jiang Yuna , Li Ting , Duan Ying
Published: October 2023

During the outbreak of COVID-19 in China, many health care workers have been involved in the front-line fight against the epidemic and have experienced major psychological challenges. This study was aimed at assessing the mental health of front-line health workers after 2 years of COVID-19 efforts. We recruited front-line health workers from Liaoning province who supported Hubei, the epicenter of the COVID-19 outbreak. The Patient Health Questionnaire-9 (PHQ-9), Generalized Anxiety Disorder scale (GAD-7), and Insomnia Severity Index (ISI) were used to assess psychological status. A total of 1101 of 1354 contacted individuals completed the survey (participation rate of 81.31%): 963 (87.5%) were 20–45 years of age, 919 (83.47%) were women, 845 (76.7%) were nurses, and 245 (22.3%) were physicians. After 2 years, the mental health symptoms among survey respondents were as follows: 46.6% had depression, 35.5% had anxiety, and 38.1% had insomnia. Thus, 2 years after the COVID-19 pandemic, the front-line health workers who had assisted Hubei province during the COVID‑19 pandemic in China still had high levels of depression, anxiety, and insomnia. Our findings suggest that the pandemic has had significant long-term effects on the mental health of front-line health workers. Therefore, mental health policies should offer long-term rather than short-term services.
Analysis of the risk transmission mechanism of monetary policy in the monetary and financial service sectors from the perspective of asset-liability management
Authors: Ma Xuanling , Ji Meng
Published: October 2023

The Silicon Valley Bank crisis that occurred in March 2023 highlights the importance of studying the risk transmission mechanism underlying monetary policy. To explore this mechanism in the monetary and financial services sector from the perspective of asset-liability management, the relationships between asset- and liability-side risks and the corresponding action direction of those risks were empirically studied based on the risk-taking channel theory of monetary policy using publicly available information on 176 Chinese monetary and financial services companies covering the period of 2000 to 2022. The analysis shows that asset-side risks are transmitted through monetary policy as liability-side risks in the monetary and financial service sectors. If the liability side passively takes on these risks, the action direction of monetary policy to asset-side risks is determined; when the liability side actively takes on these risks, monetary policy exerts opposite effects on both types of risks. This conclusion somewhat deepens our understanding of the risk transmission mechanism of monetary policy, which is helpful in better formulating and implementing monetary policy.
Safety and tolerability of weekly docetaxel plus nintedanib: A phase I trial after first-line chemotherapy failure in NSCLC
Authors: Westeel Virginie , Schuette Wolfgang , Urban Thierry , Radonjic Dejan , von Wangenheim Ute , Lorence Robert M. , Reck Martin
Published: October 2023

Introduction

Studies have shown improved tolerability with once-weekly versus three-weekly docetaxel in the second-line treatment of advanced non-small cell lung cancer (NSCLC). This study aimed to evaluate the tolerability of nintedanib plus weekly docetaxel in patients with NSCLC.

Methods

This phase I, open-label, dose-escalation study (NCT02668393) enrolled patients with locally advanced/metastatic adenocarcinoma NSCLC that had progressed on first-line platinum chemotherapy. The primary endpoint was to determine the maximum tolerated dose of nintedanib (up to 200 mg twice daily [BID]) combined with weekly docetaxel (35 mg/m2) on days 1, 8, and 15 based on the occurrence of dose-limiting toxicities (DLTs) over a 28-day treatment cycle. Adverse events (AEs) were also evaluated.

Results

The trial terminated prematurely due to recruitment challenges. At termination, seven patients had received nintedanib 150 mg BID and seven nintedanib 200 mg BID, in combination with weekly docetaxel. In the first treatment cycle, DLTs were reported for 1/6 evaluable patients (16.7%) in each group. The disease control rates were 57.1% and 42.9%, respectively. Grade ≥3 treatment-related AEs affected three patients in each group (42.9%); neutropenia was reported in one patient (14.3%) in each group. Treatment-related serious AEs were reported in three patients (42.9%) receiving nintedanib 150 mg, and two patients (28.6%) receiving nintedanib 200 mg.

Conclusions

Overall, nintedanib plus weekly docetaxel was well-tolerated in patients with locally advanced or metastatic lung adenocarcinoma who progressed on first-line platinum-based chemotherapy, without loss of efficacy. DLTs were manageable.