Photonics最新文献_第5页

Standard Single-Mode Fiber with High Modal Bandwidth as Two-Mode Fiber around 1060 nm for High Data Rate Transmission 具有高模态带宽的标准单模光纤与 1060 nm 波长附近的双模光纤一样适用于高数据速率传输

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-29 DOI: 10.3390/photonics11010035

Xin Chen, J. E. Hurley, Snigdharaj K. Mishra, J. Stone, Ming-Jun Li

引用次数: 0

Multi-Mode Vector Light Field Generation Using Modified Off-Axis Interferometric Holography and Liquid Crystal Spatial Light Modulators 利用改良离轴干涉全息技术和液晶空间光调制器生成多模式矢量光场

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-29 DOI: 10.3390/photonics11010033

Wenxu Zhu, Feilong Gao, Qianqian Fu, Xinlong Zhou, Y. Xie, Bingyuan Zhang, Santosh Kumar

{"title":"Multi-Mode Vector Light Field Generation Using Modified Off-Axis Interferometric Holography and Liquid Crystal Spatial Light Modulators","authors":"Wenxu Zhu, Feilong Gao, Qianqian Fu, Xinlong Zhou, Y. Xie, Bingyuan Zhang, Santosh Kumar","doi":"10.3390/photonics11010033","DOIUrl":"https://doi.org/10.3390/photonics11010033","url":null,"abstract":"The increasing enhancement in the modulation accuracy of spatial light modulators has garnered significant attention towards real-time control technology for light fields based on these modulators. It has been demonstrated that this technology possesses a remarkable capability to generate vector beams with arbitrary complex amplitude distributions. Nevertheless, past studies indicate that the generation of only one vector beam at a time has been observed. The simultaneous generation of numerous vector light fields can give rise to several challenges, including compromised picture quality, limited single-mode operation, and intricate optical path configurations. In pursuit of this objective, we present a novel methodology that integrates the coding methodology of modified off-axis interferometric holography with the idea of optical superposition. This technique facilitates the concurrent generation of several vector beams. In this study, we present a demonstration of the simultaneous creation of twelve vector beams using a single spatial light modulator (SLM) as a proof of concept. Significantly, this technology has the ability to generate an unlimited quantity of vector light fields concurrently under the assumption that the resolution of the SLM does not impose any limitations. The findings indicate that the imaging quality achieved by this technology is of a high standard. Furthermore, it is possible to separately control the beam waist radius, topological charge, polarization order, and extra phase of each beam.","PeriodicalId":20154,"journal":{"name":"Photonics","volume":" 26","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139142450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fine Structure of High-Energy Pulses from a Stimulated Brillouin Scattering-Assisted Q-Switch Tm-Doped Fiber Laser 受激布里渊散射辅助 Q 开关掺氩光纤激光器高能脉冲的精细结构

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-29 DOI: 10.3390/photonics11010030

Vladimir Kamynin, S. Filatova, Timur I. Mullanurov, M. D. Cheban, Alexey A. Wolf, D. Korobko, A. Fotiadi, Vladimir B. Tsvetkov

引用次数: 0

Methods of Radiation Wavelength Tuning in Short-Pulsed Fibre Lasers 短脉冲光纤激光器的辐射波长调谐方法

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-28 DOI: 10.3390/photonics11010028

S. Kobtsev

引用次数: 0

An Efficient Method for Wavefront Aberration Correction Based on the RUN Optimizer 基于 RUN 优化器的高效波前像差校正方法

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-28 DOI: 10.3390/photonics11010029

Huizhen Yang, Xiangdong Zang, Peng Chen, Xingliu Hu, Yongqiang Miao, Zhaojun Yan, Zhiguang Zhang

{"title":"An Efficient Method for Wavefront Aberration Correction Based on the RUN Optimizer","authors":"Huizhen Yang, Xiangdong Zang, Peng Chen, Xingliu Hu, Yongqiang Miao, Zhaojun Yan, Zhiguang Zhang","doi":"10.3390/photonics11010029","DOIUrl":"https://doi.org/10.3390/photonics11010029","url":null,"abstract":"The correction of wavefront aberrations in wavefront sensorless (WFS-less) adaptive optical (AO) systems requires control algorithms that can ensure rapid convergence while maintaining effective correction capabilities. This paper proposes a novel control algorithm based on the RUNge Kutta optimizer (RUN) for WFS-less AO systems that enables the quick and efficient correction of small aberrations, as well as larger aberrations. To evaluate the convergence speed and correction capabilities of a WFS-less AO system based on the RUN control algorithm, we constructed a simulated AO system and an experimental setup with a 97-element deformable mirror (DM), respectively. Additionally, the results obtained with the Particle Swarm Optimization (PSO) algorithm, Differential Evolution Algorithm (DEA), and Genetic Algorithm (GA) are also provided for comparison and analysis. Both the simulated and experimental results consistently demonstrated that our proposed method outperformed several competing algorithms in terms of correction performance and convergence speed. Furthermore, the experimental results further validate the effectiveness of our control algorithm in scenarios involving significant aberrations.","PeriodicalId":20154,"journal":{"name":"Photonics","volume":"33 6","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139152059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic Micro-Vibration Measurement Based on Orbital Angular Momentum 基于轨道角动量的动态微振动测量

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-28 DOI: 10.3390/photonics11010027

Jialong Zhu, Fucheng Zou, Le Wang, Shengmei Zhao

引用次数: 0

Design of a Scanning Module in a Confocal Microscopic Imaging System for Live-Cell Imaging 设计用于活细胞成像的共聚焦显微成像系统中的扫描模块

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-28 DOI: 10.3390/photonics11010026

Ran Tao, Tao Zhang

{"title":"Design of a Scanning Module in a Confocal Microscopic Imaging System for Live-Cell Imaging","authors":"Ran Tao, Tao Zhang","doi":"10.3390/photonics11010026","DOIUrl":"https://doi.org/10.3390/photonics11010026","url":null,"abstract":"This study proposes a Nipkow-based pinhole disk laser scanning confocal microscopic imaging system for ordinary optical microscopy, fluorescence microscopy, and confocal microscopy imaging of biological samples in order to realize the dynamic experimental monitoring of space-based life science experiments and the fine observation of biological samples. Confocal microscopic imaging is mainly completed by a scanning module that is composed of a spinning disk and other components. The parameters of the spinning disk directly determine the quality of the image. During the design process, the resolution and signal-to-noise ratios caused by different pinhole diameters in the spinning disk are the main considerations. Changes and image blurring caused by crosstalk due to the pinhole arrangement and different pinhole spacings are addressed. The high photon efficiency of the new EMCCD (electron-multiplying charge-coupled device) and CMOS (complementary metal-oxide-semiconductor) camera reduces the exposure time as much as possible, reduces damage to living cells, and achieves high-speed confocal imaging. It is shown in a confocal imaging experiment with a variable magnification of 1–40× that the imaging resolution of the system can reach a maximum of 2592 × 1944, the spatial resolution can reach 1 μm, and the highest sampling frequency is 10 fps, thus meeting the design requirements for high-speed live-cell imaging.","PeriodicalId":20154,"journal":{"name":"Photonics","volume":"3 7","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139151659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simulation and Experimental Study of Nanosecond Pulse Laser Removal of Epoxy Paint on 6061 Aluminum Alloy Surface 纳秒脉冲激光去除 6061 铝合金表面环氧树脂涂料的模拟与实验研究

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-27 DOI: 10.3390/photonics11010025

Yahui Li, Jing-yi Li, Hang Dong, Wei Zhang, Guangyong Jin

{"title":"Simulation and Experimental Study of Nanosecond Pulse Laser Removal of Epoxy Paint on 6061 Aluminum Alloy Surface","authors":"Yahui Li, Jing-yi Li, Hang Dong, Wei Zhang, Guangyong Jin","doi":"10.3390/photonics11010025","DOIUrl":"https://doi.org/10.3390/photonics11010025","url":null,"abstract":"Laser paint removal is a new cleaning technology that mainly removes paint through thermal ablation and mechanical stripping mechanisms. This paper established a thermal-mechanical coupling laser removal model of paint based on the heat conduction equation, Newton’s second law, and Fabbro’s theory. The removal process of epoxy resin paint film on an aluminum alloy surface via a nanosecond pulsed laser was studied using finite element simulations and experimental measurements. The simulation and experimental results show that the nanosecond pulse laser’s primary paint removal mechanism is the mechanical stripping caused by thermal stress and plasma shock. The laser paint removal threshold is 1.4 J/cm2. In addition, due to the different generation times of plasma shock and thermal stress, the mutual superposition of stress waves occurs in the material. This results in a discrepancy between the actual and thermal stress differences. Moreover, the thermal stress difference causes the maximum actual stress difference to fluctuate. The simulation model established in this paper can provide a reference for studying the thermal-mechanical coupling process of laser paint removal.","PeriodicalId":20154,"journal":{"name":"Photonics","volume":"91 4","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139154365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance Analysis of a Single Light Source Bidirectional Visible Light Communication Reverse Reflection Link 单光源双向可见光通信反向反射链路的性能分析

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-26 DOI: 10.3390/photonics11010018

Ying Zhang, Jiawei Ren, Kexin Li, Haibo Mou

{"title":"Performance Analysis of a Single Light Source Bidirectional Visible Light Communication Reverse Reflection Link","authors":"Ying Zhang, Jiawei Ren, Kexin Li, Haibo Mou","doi":"10.3390/photonics11010018","DOIUrl":"https://doi.org/10.3390/photonics11010018","url":null,"abstract":"Visible light communication has the advantages of large bandwidth, high security, and no RF interference, among which LED light sources are an important light source for indoor visible light communication. The use of LED as a light source for visible full-duplex communication is both to meet the lighting requirements and to ensure high-speed transmission of information. The uplink using the “cat’s eye” reverse modulation system can greatly reduce the system complexity of the reverse reflector. In order to analyze the factors affecting the optical power at the receiving end of the uplink of the indoor single light source visible light communication, this paper establishes the indoor visible light full-duplex communication system model and deduces the calculation method of the effective incidence angle of the uplink transmission light and the movable range of the reverse reflection end according to the model. The results show that when the link distance of the BK7 lens is 3 m, the lens aperture is increased from 100 mm to 150 mm, the lens focal length is increased from 100 mm to 150 mm, the travel distance of the reverse reflector is increased by 60%, and the effective range of the incidence angle is increased by about twice. In the absence of link loss, each 1 m increase in link distance increases the maximum travel distance of the reverse reflector by 0.8 m. Increasing the lens aperture, decreasing the focal length, and increasing the link distance can improve the movable range of the reverse reflector, and the effective incidence angle changes more gently with the position of the reverse reflector.","PeriodicalId":20154,"journal":{"name":"Photonics","volume":"80 11","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139154992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Miniaturized Electrothermal-MEMS-Based Optical Coherence Tomography (OCT) Handheld Microscope 基于电热-MEMS 的微型光学相干断层扫描 (OCT) 手持式显微镜

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-26 DOI: 10.3390/photonics11010017

Qian Chen, Hui Zhao, Tingxiang Qi, Hua Wang, Huikai Xie

引用次数: 0