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Shaping the spatial correlations of entangled photon pairs 塑造纠缠光子对的空间相关性
IF 3.8
Journal of Physics-Photonics Pub Date : 2024-06-06 DOI: 10.1088/2515-7647/ad50b1
Patrick Cameron, Baptiste Courme, Daniele Faccio, Hugo Defienne
{"title":"Shaping the spatial correlations of entangled photon pairs","authors":"Patrick Cameron, Baptiste Courme, Daniele Faccio, Hugo Defienne","doi":"10.1088/2515-7647/ad50b1","DOIUrl":"https://doi.org/10.1088/2515-7647/ad50b1","url":null,"abstract":"Quantum imaging enhances imaging systems performance, potentially surpassing fundamental limits such as noise and resolution. However, these schemes have limitations and are still a long way from replacing classical techniques. Therefore, there is a strong focus on improving the practicality of quantum imaging methods, with the goal of finding real-world applications. With this in mind, in this tutorial we describe how the concepts of classical light shaping can be applied to imaging schemes based on entangled photon pairs. We detail two basic experimental configurations in which a spatial light modulator is used to shape the spatial correlations of a photon pair state and highlight the key differences between this and classical shaping. We then showcase two recent examples that expand on these concepts to perform aberration and scattering correction with photon pairs. We include specific details on the key steps of these experiments, with the goal that this can be used as a guide for building photon-pair-based imaging and shaping experiments.","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141546793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The elastic stiffness tensor of cellulosic viscose fibers measured with Brillouin spectroscopy 用布里渊光谱法测量纤维素粘胶纤维的弹性刚度张量
IF 3.8
Journal of Physics-Photonics Pub Date : 2024-06-02 DOI: 10.1088/2515-7647/ad4cc6
Caterina Czibula, Manfred H Ulz, Alexander Wagner, Kareem Elsayad, Ulrich Hirn and Kristie J Koski
{"title":"The elastic stiffness tensor of cellulosic viscose fibers measured with Brillouin spectroscopy","authors":"Caterina Czibula, Manfred H Ulz, Alexander Wagner, Kareem Elsayad, Ulrich Hirn and Kristie J Koski","doi":"10.1088/2515-7647/ad4cc6","DOIUrl":"https://doi.org/10.1088/2515-7647/ad4cc6","url":null,"abstract":"Brillouin light scattering spectroscopy is applied to study the micromechanics of cellulosic viscose fibers, one of the commercially most important, man-made biobased fibers. Using an equal angle scattering geometry, we provide a thorough description of the procedure to determine the complete transversely isotropic elastic stiffness tensor. From the stiffness tensor the engineering-relevant material parameters such as Young’s moduli, shear moduli, and Poisson’s ratios in radial and axial fiber direction are evaluated. The investigated fiber type shows that, at ideal conditions, the material exhibits optical waveguide properties resulting in spontaneous Brillouin backscattering which can be used to obtain additional information from the Brillouin spectra, enabling the measurement of two different scattering processes and directions with only one scattering geometry.","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141252856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Application of handheld/portable spectroscopic tools to the identification, inner stratigraphy and mapping of archaeological metal artefacts 将手持/便携式光谱工具应用于考古金属文物的鉴定、内部地层学和绘图
IF 3.8
Journal of Physics-Photonics Pub Date : 2024-05-12 DOI: 10.1088/2515-7647/ad46a7
Sara Mattiello, Olga De Pascale, Vincenzo Palleschi, Girolamo Fiorentino and Giorgio S Senesi
{"title":"Application of handheld/portable spectroscopic tools to the identification, inner stratigraphy and mapping of archaeological metal artefacts","authors":"Sara Mattiello, Olga De Pascale, Vincenzo Palleschi, Girolamo Fiorentino and Giorgio S Senesi","doi":"10.1088/2515-7647/ad46a7","DOIUrl":"https://doi.org/10.1088/2515-7647/ad46a7","url":null,"abstract":"Field handheld/portable instrumentations, such as in-situ geochemical analyzers, have the potential to assist efficiently targeted geochemical archaeometry campaigns in detecting and quantifying specific elements. Non-destructive portable energy dispersive x-ray fluorescence and micro-destructive handheld laser-induced breakdown spectroscopy (LIBS) instrumentation were utilized to investigate the elemental composition, internal stratigraphy by depth profiling and microscale compositional mapping of five copper and two iron alloy artefacts collected from various ancient graves in the Minervino Murge area, Apulia, Italy. The primary elements identified by both techniques included Cu, Sn and Pb in copper alloys, and Fe with minor amounts of Cu and Pb in iron alloys. Furthermore, the elements Al, Ca, Si, Mg, Na and K, mostly originated from soil contamination, and the trace elements Sb, Ni and Zn were detected. The satisfactory performance of both techniques was assessed by their capacity to provide reproducible elemental composition data. Finally, the depth profile and mapping achieved by LIBS contributed to understanding the metal processing and history of the objects studied, so confirming both techniques to be robust analytical tools in outdoor archaeology and archaeometry campaigns.","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140933515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Topological photonic encoder based on the disclination states 基于偏离态的拓扑光子编码器
IF 3.8
Journal of Physics-Photonics Pub Date : 2024-05-12 DOI: 10.1088/2515-7647/ad46aa
Guoxiang Si, Wen Zhao, Hongyu Zhang and Cuicui Lu
{"title":"Topological photonic encoder based on the disclination states","authors":"Guoxiang Si, Wen Zhao, Hongyu Zhang and Cuicui Lu","doi":"10.1088/2515-7647/ad46aa","DOIUrl":"https://doi.org/10.1088/2515-7647/ad46aa","url":null,"abstract":"Topological disclination states are highly localized and stable by means of introducing disclination, which provide a robust platform for realizing optical information transition. A photonic encoder, as a kind of optical information transition element, can record, transmit, and protect optical information. However, there is no effective methods to realize topological photonic encoders. In this work, we propose a method to realize topological photonic encoder through topological disclination states. After the introduction of a disclination in the honeycomb structure, four types of disclination states can be generated. To demonstrate the device to carry more information, nine disclination structures with different cylindrical radii are combined, and the disclination states can be denoted by digital signals 1–4 to prepare a topological photonic encoder. In addition, to improve the security of information transition, we build an encryption algorithm based on Morse code. This work provides a new idea for the construction of encoding devices and promotes the practical application of the topological disclination states.","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140933607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Beam shaping in light-sheet microscopy: an experimental analysis 光片显微镜中的光束整形：实验分析
IF 3.8
Journal of Physics-Photonics Pub Date : 2024-05-12 DOI: 10.1088/2515-7647/ad46a9
Manuel Hüpfel and Gerd Ulrich Nienhaus
{"title":"Beam shaping in light-sheet microscopy: an experimental analysis","authors":"Manuel Hüpfel and Gerd Ulrich Nienhaus","doi":"10.1088/2515-7647/ad46a9","DOIUrl":"https://doi.org/10.1088/2515-7647/ad46a9","url":null,"abstract":"Thanks to its unique optical sectioning capability, light-sheet fluorescence microscopy has proven to be a powerful technique for volumetric imaging of entire model organisms with high spatial and temporal resolution. For light sheet generation with scanned laser beams, holographic beam shaping offers precise control over the optical fields exciting the fluorescence. Various illumination schemes have been proposed, aiming for best image quality with regard to axial resolution, optical sectioning, illumination homogeneity and photobleaching while at the same time retaining a large field of view. Here, we have engineered and characterized a variety of beams and analyzed their imaging performance by using phantom samples and zebrafish embryos. These data may assist researchers to select the light sheet best suited to the imaging application at hand.","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140933859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Speed of sound measurement and mapping in transparent materials by impulsive stimulated Brillouin microscopy 利用脉冲刺激布里渊显微镜测量和绘制透明材料的声速图
IF 3.8
Journal of Physics-Photonics Pub Date : 2024-05-12 DOI: 10.1088/2515-7647/ad46a8
Taoran Le, Jiarui Li, Haoyun Wei and Yan Li
{"title":"Speed of sound measurement and mapping in transparent materials by impulsive stimulated Brillouin microscopy","authors":"Taoran Le, Jiarui Li, Haoyun Wei and Yan Li","doi":"10.1088/2515-7647/ad46a8","DOIUrl":"https://doi.org/10.1088/2515-7647/ad46a8","url":null,"abstract":"Impulsive stimulated Brillouin scattering (ISBS) is a variant of stimulated Brillouin scattering, which can overcome the shortcomings of the long acquisition time of traditional Brillouin microscopy. We introduce the difference between ISBS and other Brillouin microscopies in calculating longitudinal modulus. The Brillouin frequency shift obtained by ISBS is only related to the system parameters and the speed of sound (SOS) in the sample, not to the refractive index. Non-contact SOS measurement of homogeneous samples is an important application of Brillouin scattering, used in the early study of Brillouin spectroscopy and the mechanical properties of liquids. However, the measurement requires prior knowledge of the sample refractive index, which limits the measurement of the unknown refractive index sample. Here, we propose a method to measure the SOS based on ISBS, which in principle avoids the need for refractive index parameters. The SOS of several liquids are measured and compared with the standard values. The mean relative standard deviation is 1.13%. Moreover, we measure the SOS of a mixture of ethanol and water to demonstrate an application of measuring SOS without refractive index information. We also demonstrate the high spatial resolution of ISBS with a methanol-filled PDMS sample.","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140933463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spectrally tunable phase-biased NALM mode-locked Yb:fiber laser with nJ-level pulse energy 具有 nJ 级脉冲能量的光谱可调谐相位偏置 NALM 模式锁定光纤激光器
IF 3.8
Journal of Physics-Photonics Pub Date : 2024-04-16 DOI: 10.1088/2515-7647/ad3d1b
Saeid Ebrahimzadeh, Sakib Adnan, Yishen Li, Vito F Pecile, Jakob Fellinger, Sarper Salman, Christoph M Heyl, Ingmar Hartl, Oliver H Heckl, Gil Porat
{"title":"Spectrally tunable phase-biased NALM mode-locked Yb:fiber laser with nJ-level pulse energy","authors":"Saeid Ebrahimzadeh, Sakib Adnan, Yishen Li, Vito F Pecile, Jakob Fellinger, Sarper Salman, Christoph M Heyl, Ingmar Hartl, Oliver H Heckl, Gil Porat","doi":"10.1088/2515-7647/ad3d1b","DOIUrl":"https://doi.org/10.1088/2515-7647/ad3d1b","url":null,"abstract":"Applications of mode-locked fiber lasers benefit from robust and self-starting mode-locking, spectral tuning, high pulse energy and high average power. All-polarization-maintaining (PM) fiber lasers mode-locked with a phase-biased nonlinear amplifying loop mirror (NALM) have been shown to be very robust and reliably self-starting, and provide either spectral tuning or high pulse energy, but not both. We report on a simple method for concurrent spectral tuning and nanojoule-level pulse energy scaling of an all-PM phase-biased NALM mode-locked Yb:fiber laser, which we demonstrate over a 54 nm tuning range, reaching up to 1.67 nJ pulse energy and 126 mW average power. Unlike other laser configurations, our results show that net normal dispersion is not necessary or optimal for scaling the pulse energy of this type of mode-locked fiber laser.","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140615892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spectro-angular analysis of roadside-integrated bifacial solar power systems with reflecting sound barriers 带反射声屏障的路边一体化双面太阳能发电系统的光谱角分析
IF 3.8
Journal of Physics-Photonics Pub Date : 2024-03-14 DOI: 10.1088/2515-7647/ad2b4c
Silvi Bundo, Shweta Pal, Marco Ernst, Rebecca Saive
{"title":"Spectro-angular analysis of roadside-integrated bifacial solar power systems with reflecting sound barriers","authors":"Silvi Bundo, Shweta Pal, Marco Ernst, Rebecca Saive","doi":"10.1088/2515-7647/ad2b4c","DOIUrl":"https://doi.org/10.1088/2515-7647/ad2b4c","url":null,"abstract":"Bifacial photovoltaic modules along highways provide energy supply and act as sound barriers simultaneously. This study examines the impact on energy production when incorporating sound barriers with varying light reflection properties into this integrated solar infrastructure along roadways. Specifically, we use advanced computational simulations to analyze the effects of integrating black, ideal specular, and ideal diffuse (Lambertian) reflectors into an existing highway solar power plant located in the Netherlands. Our analysis combines realistic spectro-angular irradiance data as input with our in-house reverse ray tracing software. Our calculations show that for an east-west facing system, an ideal diffuse reflector increases the annual yield by 70%, while a specular reflector decreases the yield due to shading. Most notably, the diffuse reflector doubles the energy yield during winter months, thereby offering a pathway to decrease the seasonal energy demand and supply gap.","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140314578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design and development of speckle-free high-power laser-driven phosphor converted compact automotive headlamp module 设计和开发无斑点高功率激光驱动荧光粉转换紧凑型汽车前大灯模块
IF 3.8
Journal of Physics-Photonics Pub Date : 2024-03-14 DOI: 10.1088/2515-7647/ad2bd2
Virendra Kumar, Parag Sharma, Dalip Singh Mehta
{"title":"Design and development of speckle-free high-power laser-driven phosphor converted compact automotive headlamp module","authors":"Virendra Kumar, Parag Sharma, Dalip Singh Mehta","doi":"10.1088/2515-7647/ad2bd2","DOIUrl":"https://doi.org/10.1088/2515-7647/ad2bd2","url":null,"abstract":"The applicability of diode-lasers in automobile headlights is an advanced innovation for the automobile illumination industry due to the extraordinary properties of laser light over conventional light sources, such as high brightness, wide colour gamut, high directionality, low energy consumptions and long lifetime. Lasers are highly coherent in nature, so they encounter the problem of unwanted speckles and spurious fringes and always require a high level of opto-thermal engineering along with speckle reduction mechanisms for high lumen laser applications. Targeting such challenges, in this paper, we report an innovative design and development scheme for a high lumen laser-based automotive headlamp module. The headlamp prototype comprises a set of four cylindrical diffusers which distribute the high energy laser radiation via scattering along the length of the diffusers within a metallic mirro-based pyramidal cavity reflector. The scattered laser light from cylindrical diffusers interacts with a remote phosphor layer that prevents phosphor–resin burning. The pyramidal cavity reflector plays an important role in making the laser light uniform and speckle-free, via spatial and angular diversity, as light exits from the cavity after multiple internal reflections. This reflector redirects the highly concentrated white light over a long range without using any projection lens. The design and performance of the headlight system was studied using TracePro simulation software and tested experimentally in a photometric laboratory. The International Commission on Illumination (CIE) coordinates of the light generated by the headlamp was (0.3947, 0.4908) and the correlated colour temperature was 4240 K, which represents warm white light illumination.","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140314914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Acousto-optic deflectors in experimental neuroscience: overview of theory and applications 实验神经科学中的声光偏转器：理论与应用概述
IF 3.8
Journal of Physics-Photonics Pub Date : 2024-03-11 DOI: 10.1088/2515-7647/ad2e0d
Pietro Ricci, Giuseppe Sancataldo, Vladislav Gavryusev, Francesco Saverio Pavone, Peter Saggau, Martí Duocastella
{"title":"Acousto-optic deflectors in experimental neuroscience: overview of theory and applications","authors":"Pietro Ricci, Giuseppe Sancataldo, Vladislav Gavryusev, Francesco Saverio Pavone, Peter Saggau, Martí Duocastella","doi":"10.1088/2515-7647/ad2e0d","DOIUrl":"https://doi.org/10.1088/2515-7647/ad2e0d","url":null,"abstract":"Cutting-edge methodologies and techniques are required to understand complex neuronal dynamics and pathological mechanisms. Among them, optical tools stand out due to their combination of non-invasiveness, speed, and precision. Examples include optical microscopy, capable of characterizing extended neuronal populations in small vertebrates at high spatiotemporal resolution, or all-optical electrophysiology and optogenetics, suitable for direct control of neuronal activity. However, these approaches necessitate progressively higher levels of accuracy, efficiency, and flexibility of illumination for observing fast entangled neuronal events at a millisecond time-scale over large brain regions. A promising solution is the use of acousto-optic deflectors (AODs). Based on exploiting the acousto-optic effects, AODs are high-performance devices that enable rapid and precise light deflection, up to MHz rates. Such high-speed control of light enables unique features, including random-access scanning or parallelized multi-beam illumination. Here, we survey the main applications of AODs in neuroscience, from fluorescence imaging to optogenetics. We also review the theory and physical mechanisms of these devices and describe the main configurations developed to accomplish flexible illumination strategies for a better understanding of brain function.","PeriodicalId":44008,"journal":{"name":"Journal of Physics-Photonics","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140314917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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