Optics & Laser Technology最新文献_第7页

Comprehensive review: Advancements in modeling geometrical and mechanical characteristics of laser powder bed fusion process 全面回顾：激光粉末床熔融工艺几何和机械特性建模的进展

Optics & Laser Technology Pub Date : 2024-08-03 DOI: 10.1016/j.optlastec.2024.111480

Seyedeh Fatemeh Nabavi, Anooshiravan Farshidianfar, Hamid Dalir

{"title":"Comprehensive review: Advancements in modeling geometrical and mechanical characteristics of laser powder bed fusion process","authors":"Seyedeh Fatemeh Nabavi, Anooshiravan Farshidianfar, Hamid Dalir","doi":"10.1016/j.optlastec.2024.111480","DOIUrl":"https://doi.org/10.1016/j.optlastec.2024.111480","url":null,"abstract":"In its comprehensive exploration of recent developments in laser powder bed fusion (LPBF) characteristics modeling, this study stands out by offering a unique emphasis on both geometrical and mechanical attributes, thus contributing novelty to the existing literature. While certain aspects of LPBF modeling may have been touched upon by existing reviews in the field, our study goes beyond by providing a holistic overview that encompasses a broad spectrum of geometrical and mechanical characteristics, thus introducing approach to understanding the complexities of the LPBF process. By categorizing LPBF modeling into distinct types and meticulously analyzing case studies across various length scales, from macroscopic to nanoscopic levels, we introduce novelty in the field by offering a comprehensive perspective on the intricacies of LPBF modeling. Furthermore, our study surpasses a surface-level examination of LPBF characteristics by delving deeply into the methodologies employed for modeling both geometrical and mechanical attributes, thereby introducing novel insights into the methodologies and challenges associated with LPBF modeling. A significant aspect of our review is the identification of gaps in the current body of knowledge, which serves as a foundation for proposing future trends and directions in LPBF modeling, thus introducing novelty to the literature. By highlighting these gaps and charting a course for future research, our study offers a novel perspective on how to advance the field of LPBF modeling, thereby contributing to ongoing refinement and innovation in additive manufacturing processes.","PeriodicalId":19597,"journal":{"name":"Optics & Laser Technology","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141933970","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

Efficient frequency conversion in dielectric metasurfaces supporting both surface lattice resonances and quasi-bound states in the continuum 介质元表面中的高效频率转换同时支持表面晶格共振和连续体中的准束缚态

Optics & Laser Technology Pub Date : 2024-08-03 DOI: 10.1016/j.optlastec.2024.111545

Myong-Chon Cho, Kwang-Hyon Kim

{"title":"Efficient frequency conversion in dielectric metasurfaces supporting both surface lattice resonances and quasi-bound states in the continuum","authors":"Myong-Chon Cho, Kwang-Hyon Kim","doi":"10.1016/j.optlastec.2024.111545","DOIUrl":"https://doi.org/10.1016/j.optlastec.2024.111545","url":null,"abstract":"For efficient coherent generation at various wavelengths from nonlinear metasurfaces, we need to generate multiple high- resonances with single metasurfaces. In this report, we theoretically show simultaneous generation of high- surface lattice resonances (SLRs) and quasi-bound states in the continuum (quasi-BICs) in single dielectric metasurfaces composed of symmetry-broken unit cells of GaP nanorods surrounded by silica glass. Quite interestingly, there are quasi-BIC with double asymmetry parameters and also the resonance with duality between SLR and symmetry breaking-induced quasi-BIC, in addition to simple SLRs and quasi-BICs. For different polarizations of incident waves, one can obtain multiple high- SLRs and quasi-BICs, which can be used for efficient generation of coherent radiations in the range from visible to mid-infrared by second-harmonic generation (SHG), sum-frequency generation (SFG), and difference-frequency generation (DFG). The numerical results show that mid-infrared radiation at around 14 μm can be directly generated from the dielectric metasurfaces by DFG with an efficiency of about 1.4 × 10 % for pump intensities of 20 MW/cm by pumping at the resonant wavelengths of SLR and quasi-BIC. Besides efficient frequency conversions, coexisting high- SLRs and quasi-BICs in dielectric metasurfaces can also be employed for various photonic applications such as sensitive sensing.","PeriodicalId":19597,"journal":{"name":"Optics & Laser Technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141933969","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

Characteristics of high-energy non-collinear Brillouin amplifier based on fused silica 基于熔融石英的高能非共轭布里渊放大器的特性

Optics & Laser Technology Pub Date : 2024-08-02 DOI: 10.1016/j.optlastec.2024.111547

Bin Chen, Zhenxu Bai, Tianhao Ma, Yuanyu Cheng, Can Cui, Yaoyao Qi, Jie Ding, Bingzheng Yan, Kun Wang, Yulei Wang, Zhiwei Lu

引用次数: 0

All in-fiber Fabry–Pérot interferometer sensor towards refractive index and temperature simultaneous sensing 实现折射率和温度同步传感的全光纤内法布里-佩罗干涉仪传感器

Optics & Laser Technology Pub Date : 2024-08-02 DOI: 10.1016/j.optlastec.2024.111551

Shaoxiang Duan, Wenyu Wang, Lingyi Xiong, Bo Wang, Bo Liu, Wei Lin, Hao Zhang, Haifeng Liu, Xu Zhang

{"title":"All in-fiber Fabry–Pérot interferometer sensor towards refractive index and temperature simultaneous sensing","authors":"Shaoxiang Duan, Wenyu Wang, Lingyi Xiong, Bo Wang, Bo Liu, Wei Lin, Hao Zhang, Haifeng Liu, Xu Zhang","doi":"10.1016/j.optlastec.2024.111551","DOIUrl":"https://doi.org/10.1016/j.optlastec.2024.111551","url":null,"abstract":"The majority of biology and chemistry takes place in solution, in which refractive index (RI) and temperature sensing underlie molecular detection and profiling. All-in-fiber integrated devices are uniquely suited to detecting the properties of samples, which allows liquids to flow and react in the fiber cavities. Here we use a single-hole dual-core fiber (SHDCF) based Fabry–Pérot interferometer (FPI) to simultaneously detect the refractive index and temperature of solution, with high sensitivity enhanced by the vernier effect. The inlets and outlets are built by splicing C-shaped fiber and fiber capillary between SHDCF. A detection region inside the microscopic hole of SHDCF obtained after splicing is constructed. Our method offers high sensitivities of 6851.89 nm/RIU and 0.493 nm/℃ for RI and temperature in a liquid solution, respectively. Notably, the cross-sensitivity of RI and temperature can be eliminated by constructing a transmission matrix. New in-fiber integrated ways of revealing properties of low-volume samples may have extensive potential for applications in the biological and chemical sciences.","PeriodicalId":19597,"journal":{"name":"Optics & Laser Technology","volume":"110 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141933971","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

Implementation of a single-shot metrology system for a TW-class laser in a particle accelerator facility 为粒子加速器设施中的 TW 级激光器实施单发计量系统

Optics & Laser Technology Pub Date : 2024-08-02 DOI: 10.1016/j.optlastec.2024.111523

Alexandre Rondepierre, Driss Oumbarek Espinós, Zhan Jin, Tomonao Hosokai

{"title":"Implementation of a single-shot metrology system for a TW-class laser in a particle accelerator facility","authors":"Alexandre Rondepierre, Driss Oumbarek Espinós, Zhan Jin, Tomonao Hosokai","doi":"10.1016/j.optlastec.2024.111523","DOIUrl":"https://doi.org/10.1016/j.optlastec.2024.111523","url":null,"abstract":"Electron generation from a laser-plasma accelerator (LPA) requires a good knowledge of the laser beam delivered on target, as many parameters are involved and represents a complex non-linear system. The next step towards a high repetition rate generation of stable and high-quality electron beams also requires to measure and monitor in real time and in single-shot the laser parameters, which may be a tough task for fs high-power laser systems. In this article, conducted at the LAPLACIAN LPA facility, we propose a simple way to measure all important laser parameters in real time without disturbing the main beam delivered on target, while ensuring to thwart intrinsic issues such as aberrations and dispersion. The beam leakage from the last mirror, just after the focusing optics, is used and sent towards a dedicated setup where, mainly, the energy, the pulse duration, the FF and NF profile (implying beam pointing and size), the spectrum and the M2 are measured. A prismatic blade has been designed to compensate aberrations introduced during the leakage process, and also chirped mirrors are used to compensate the dispersion. This real-time laser metrology system is fully operational to monitor what is reaching the target, and it should help in the future to have a better understanding on the electron beam generation and its instabilities.","PeriodicalId":19597,"journal":{"name":"Optics & Laser Technology","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141933973","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

Long-term repetition rate stabilization of soliton microcomb using optical closed-loop injection locking 利用光闭环注入锁定实现孤子微蜂窝的长期重复率稳定

Optics & Laser Technology Pub Date : 2024-08-01 DOI: 10.1016/j.optlastec.2024.111549

Zhichuang Wang, Lei Shi, Xiaohong Hu, Brent E. Little, Sai T. Chu, Weiqiang Wang, Wenfu Zhang

引用次数: 0

Experimental study on laser assisted machining of silicon nitride ceramics based on acoustic emission detection 基于声发射检测的氮化硅陶瓷激光辅助加工实验研究

Optics & Laser Technology Pub Date : 2024-08-01 DOI: 10.1016/j.optlastec.2024.111497

Yezhuang Pu, Yugang Zhao, Guoyong Zhao, Haiyun Zhang, Zhuang Song

引用次数: 0

A metasurface processor that supports synchronous operation of analog and digital computing 支持模拟和数字计算同步运行的元表面处理器

Optics & Laser Technology Pub Date : 2024-08-01 DOI: 10.1016/j.optlastec.2024.111537

Huiping Yang, Junbo Yang, Jiagui Wu

引用次数: 0

Higher-order Poincaré sphere multiplexed metasurface holography for optical information encryption 用于光学信息加密的高阶泊恩卡雷球复用元表面全息技术

Optics & Laser Technology Pub Date : 2024-08-01 DOI: 10.1016/j.optlastec.2024.111555

Hairong He, Meiyu Peng, Guangtao Cao, Yanbei Li, Hui Liu, Hui Yang

{"title":"Higher-order Poincaré sphere multiplexed metasurface holography for optical information encryption","authors":"Hairong He, Meiyu Peng, Guangtao Cao, Yanbei Li, Hui Liu, Hui Yang","doi":"10.1016/j.optlastec.2024.111555","DOIUrl":"https://doi.org/10.1016/j.optlastec.2024.111555","url":null,"abstract":"Metasurface-enabled holography holds vital applications in various fields such as optical display, optical data storage, and optical encryption. Despite the rapid development of multiplexed metaholograms through exploiting different physical dimensions of photons such as polarization, amplitude, wavelength, and angular momentum, the multiplexing channel is approaching its limit due to the almost exhausted existing physical dimensions of photons. Here we demonstrate the higher-order Poincaré sphere (HOPS)-multiplexed holography by exploiting vector beam on the HOPS as a new physical dimension for holographic multiplexing. The underlying mechanism relies on independent control of phase shifts in two spin eigenstates to modulate the vector beam induced fields. As proof of concept, we demonstrate a -hologram with four multiplexing channels that exhibit independent holographic images when the incident beams are on the −2nd order, −1st order, 1st order and 2nd order HOPS, respectively. Moreover, leveraging the unique characteristic of HOPS-multiplexed holography, high-security optical anti-counterfeiting and information encryption have been demonstrated as well. Our work harnesses the previously inaccessible vector beams as independent information carries for holographic multiplexing, promising to potential applications in optical display and optical encryption.","PeriodicalId":19597,"journal":{"name":"Optics & Laser Technology","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141881480","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

Platinum and palladium nanoparticles doped photopolymer for reflection holography 用于反射全息摄影的掺铂和掺钯纳米粒子光聚合物

Optics & Laser Technology Pub Date : 2024-07-23 DOI: 10.1016/j.optlastec.2024.111459

José Carlos García-Vázquez, Manuel G. Ramírez, Belén Nieto-Rodríguez, Tomás Lloret, José Solla-Gullón, Inmaculada Pascual

引用次数: 0