发布求助
文献互助 智能选刊 最新文献

Journal of Optics最新文献

筛选
英文 中文
Bit error rate of M-pulse position modulated laser beams for vertical links operating in weak oceanic turbulence 用于在弱海洋湍流中运行的垂直链路的 M 脉冲位置调制激光束的比特误差率
IF 2.1 4区 物理与天体物理
Journal of Optics Pub Date : 2024-08-23 DOI: 10.1088/2040-8986/ad44ae
Hamza Gerçekcioğlu, Yahya Baykal
{"title":"Bit error rate of M-pulse position modulated laser beams for vertical links operating in weak oceanic turbulence","authors":"Hamza Gerçekcioğlu, Yahya Baykal","doi":"10.1088/2040-8986/ad44ae","DOIUrl":"https://doi.org/10.1088/2040-8986/ad44ae","url":null,"abstract":"The on-axis scintillation index of laser beams is investigated by employing the Rytov method in a weakly turbulent oceanic medium for up/downlink coupling of laser communication between any underwater vehicles or divers. For vertical links, the formulation of the on-axis scintillation index of laser beams is derived analytically and evaluated for plane, collimated Gaussian and spherical beams in specific mediums, including the Atlantic Ocean at mid and low latitudes associating temperature and salinity changes at low latitudes, at mid latitude-summer and at mid latitude-winter. Using the scintillation index, bit error rate (BER) performance of M-pulse position modulation is investigated for these types of laser beams. The variations of the scintillation index against the uplink/downlink propagation distances, source size and zenith angle are examined, and BER variations versus the Kolmogorov microscale and the symbol orders, and results are compared. It is noted that the behavior of the scintillation index that depends on the relative strength of temperature and salinity fluctuations which changes in depth, is different for uplink/downlink and for each latitude due to its distinct characteristics. The source size that minimizes the scintillation index values is in the range of about 0.1 cm–0.2 cm for all latitudes.","PeriodicalId":16775,"journal":{"name":"Journal of Optics","volume":"9 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142181018","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
An optical fingerprint recognition method based on diffraction field 基于衍射场的光学指纹识别方法
IF 2.1 4区 物理与天体物理
Journal of Optics Pub Date : 2024-08-23 DOI: 10.1088/2040-8986/ad6e9b
Yixuan Wu, Yu Liu, Haibitao Zhu, Shaohua Tao
{"title":"An optical fingerprint recognition method based on diffraction field","authors":"Yixuan Wu, Yu Liu, Haibitao Zhu, Shaohua Tao","doi":"10.1088/2040-8986/ad6e9b","DOIUrl":"https://doi.org/10.1088/2040-8986/ad6e9b","url":null,"abstract":"Biometric technology, which authenticates identities with high reliability and stability by comparing the unique characteristics of human bodies, is widely used in the fields of electronic labeling, information security, access control, etc. Fingerprint recognition technology, which has the advantages of easy operation, fast recognition and high safety, has become the mainstream of the information decryption and access control application. In this paper, we proposed an optical fingerprint recognition method, which fulfilled recognition by comparing the characteristic intensity distributions of the diffraction fields of fingerprints. We carried out experiments for the recognition of fingerprints from different fingers and the same finger, and cropped fingerprints. The recognition results verified the feasibility of the proposed method. The method has advantages in terms of operation speed, recognition accuracy, and tolerance for partial information loss, and provides an effective way in optical sensing.","PeriodicalId":16775,"journal":{"name":"Journal of Optics","volume":"11 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142181019","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 numerical study of a multifunctional metamaterial with efficient terahertz absorption and low infrared emission 具有高效太赫兹吸收和低红外发射功能的多功能超材料的数值研究
IF 2.1 4区 物理与天体物理
Journal of Optics Pub Date : 2024-08-14 DOI: 10.1088/2040-8986/ad6a6d
Jinjun Bai, Chunxi Liu, Ying Shi, Wei Xu, Shengjiang Chang
{"title":"A numerical study of a multifunctional metamaterial with efficient terahertz absorption and low infrared emission","authors":"Jinjun Bai, Chunxi Liu, Ying Shi, Wei Xu, Shengjiang Chang","doi":"10.1088/2040-8986/ad6a6d","DOIUrl":"https://doi.org/10.1088/2040-8986/ad6a6d","url":null,"abstract":"In this study, a multifunctional metamaterial is proposed to effectively absorb terahertz (THz) radiation and shield against infrared (IR) emissions. The device comprises an IR shielding layer made of ZnS and SiO<sub>2</sub>, and a terahertz absorbing layer utilizing a ‘graphene—SiO<sub>2</sub>—gold’ sandwich-like structure. The properties of the metamaterial are investigated using the full-vector finite element method. The results indicate that the emissivity of the device is below 0.1 in the IR atmospheric window (8–14 <inline-formula>\u0000<tex-math><?CDATA $mu {text{m}}$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:mi>μ</mml:mi><mml:mrow><mml:mtext>m</mml:mtext></mml:mrow></mml:mrow></mml:math><inline-graphic xlink:href=\"joptad6a6dieqn1.gif\"></inline-graphic></inline-formula>), with absorption reaching 90% and a bandwidth of 2.42 THz in 2–6 THz. Furthermore, the device is certainly tolerant to variations in the angle of incidence. It has a simple structure and a relatively easy preparation process. These advantages make it suitable for applications in the fields of anti-radar stealth in the THz band.","PeriodicalId":16775,"journal":{"name":"Journal of Optics","volume":"30 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142181020","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
Fast lipid vesicles and dielectric particles migration using thermal-gradient-induced forces 利用热梯度诱导力快速迁移脂质囊泡和介质颗粒
IF 2.1 4区 物理与天体物理
Journal of Optics Pub Date : 2024-08-11 DOI: 10.1088/2040-8986/ad69a0
Zilin Jiang, Yixin Sun, Yifei Gao, Lilun Xu and Domna G Kotsifaki
{"title":"Fast lipid vesicles and dielectric particles migration using thermal-gradient-induced forces","authors":"Zilin Jiang, Yixin Sun, Yifei Gao, Lilun Xu and Domna G Kotsifaki","doi":"10.1088/2040-8986/ad69a0","DOIUrl":"https://doi.org/10.1088/2040-8986/ad69a0","url":null,"abstract":"Lipid vesicles are small biological particles that can be used for both targeted drug delivery systems and clinical studies. Their optical manipulation, however, is limited by the small difference in refractive indices with the surrounding medium, as well as the requirement for high laser trapping powers. In this work, we combine gradient force and thermal forces to deliver and trap individual lipid vesicles with low-trapping laser powers. The total optothermal force exerted on liposomes causes them to migrate rapidly toward the laser focus with a high average migration velocity of 1.77 µm s−1 under 7.3% w/v polyethylene glycol (PEG) concentration and low trapping laser power of 1 mW. A high normalized experimental trap stiffness of 0.88 (pN µm) mW−1 was obtained at 7.3% w/v PEG/water solution. This work may open new ways for bioparticle sorting and manipulation with potential applications in cellular studies, drug delivery, biosensing, and medicine.","PeriodicalId":16775,"journal":{"name":"Journal of Optics","volume":"247 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141940308","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
Closed forms for spatiotemporal optical vortices and sagittal skyrmionic pulses 时空光学漩涡和矢状天电离脉冲的封闭形式
IF 2.1 4区 物理与天体物理
Journal of Optics Pub Date : 2024-08-11 DOI: 10.1088/2040-8986/ad6a26
S Vo, R Gutiérrez-Cuevas and M A Alonso
{"title":"Closed forms for spatiotemporal optical vortices and sagittal skyrmionic pulses","authors":"S Vo, R Gutiérrez-Cuevas and M A Alonso","doi":"10.1088/2040-8986/ad6a26","DOIUrl":"https://doi.org/10.1088/2040-8986/ad6a26","url":null,"abstract":"Spatiotemporal optical vortices (STOVs) are short pulses that present a vortex whose axis is perpendicular to the main propagation direction. We present analytic expressions for these pulses that satisfy exactly Maxwell’s equation, by applying appropriate differential operators to complex focus pulses with Poisson-like frequency spectrum. We also provide a simple ray picture for understanding the deformation of these pulses under propagation. Finally, we use these solutions to propose a type of pulse with sagittal skyrmionic polarization distribution covering all states of transverse polarization.","PeriodicalId":16775,"journal":{"name":"Journal of Optics","volume":"96 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141940311","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
Statistics of Lyapunov exponent in random Fibonacci multilayer 随机 Fibonacci 多层中的 Lyapunov 指数统计
IF 2.1 4区 物理与天体物理
Journal of Optics Pub Date : 2024-08-07 DOI: 10.1088/2040-8986/ad699d
Pasquale Falcone and Luigi Moretti
{"title":"Statistics of Lyapunov exponent in random Fibonacci multilayer","authors":"Pasquale Falcone and Luigi Moretti","doi":"10.1088/2040-8986/ad699d","DOIUrl":"https://doi.org/10.1088/2040-8986/ad699d","url":null,"abstract":"We numerically investigated the localization properties of band-gap and band-edge modes in a one-dimensional random Fibonacci optical multilayer. The statistics of the Lyapunov exponent (LE) reveal distinct behaviors of localization effects for band-edge and band-gap modes as function of disorder strength. In particular, a deviation from the single parameter scaling theory (SPST) of localization was observed within a frequency window corresponding to the band-gap of an ordered Fibonacci multilayer. Different band-gaps show different SPST dynamics. To provide a physical explanation for the violation of SPST, a close correlation between the frequency distribution of the resonant modes in the band-gap and the variance of the LE has been found. The spatial distribution of resonant modes has been reported and discussed. Finally, the dynamics of the gap closing of the two main band-gaps as function of the disorder strength has been analyzed.","PeriodicalId":16775,"journal":{"name":"Journal of Optics","volume":"12 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141940310","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
Magnetic field enhanced terahertz generation from shape-dependent metallic nanoparticles 形状依赖性金属纳米粒子的磁场增强型太赫兹产生
IF 2.1 4区 物理与天体物理
Journal of Optics Pub Date : 2024-08-07 DOI: 10.1088/2040-8986/ad5b74
Moses Simon and Prashant Chauhan
{"title":"Magnetic field enhanced terahertz generation from shape-dependent metallic nanoparticles","authors":"Moses Simon and Prashant Chauhan","doi":"10.1088/2040-8986/ad5b74","DOIUrl":"https://doi.org/10.1088/2040-8986/ad5b74","url":null,"abstract":"This communication deals with the analytical study of terahertz (THz) generation via frequency-difference mechanism using two circularly symmetric Gaussian laser beams with slightly different frequencies and and wave vectors and simultaneously propagating through a mixture of spatially corrugated noble-metal nanoparticles. The mixture, consisting of spherical nanoparticles (SNPs) and cylindrical nanoparticles (CNPs), is placed in a host medium under the influence of an externally applied static magnetic field. The two co-propagating laser beams impart a nonlinear ponderomotive force on the electrons of the NPs, causing them to experience nonlinear oscillatory velocity. Furthermore, the consequent nonlinear current density excites THz radiation at the beat frequency . Magnetic fields influence the surface plasmon resonance condition associated with electrons of the nanoparticles due to enhancement in ponderomotive nonlinearities, thereby causing an increment in the amplitude of the generated THz field. It is observed that the generated THz radiation has a strong dependence on the shape and size of the NPs in addition to the magnetic field strength. CNPSs provide greater THz amplitude than SNPs due to additional resonance modes, and combining both kinds of nanostructures further enhances the amplitude. THz radiation plays an important role in biomedical and pharmaceutical fields, communications, security and THz spectroscopy.","PeriodicalId":16775,"journal":{"name":"Journal of Optics","volume":"141 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141969165","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
Investigation of the transmission characters of Ince-Gaussian beams in oceanic turbulence 海洋湍流中英斯-高斯光束传输特性的研究
IF 2.1 4区 物理与天体物理
Journal of Optics Pub Date : 2024-08-07 DOI: 10.1088/2040-8986/ad699f
Chenlu Li, Minyang Zhang, Pengxiang Ruan, Changlan Xu, Youyou Hu, Mingming Zhang, Qingli Jing, Dongxu Chen and Jun Liu
{"title":"Investigation of the transmission characters of Ince-Gaussian beams in oceanic turbulence","authors":"Chenlu Li, Minyang Zhang, Pengxiang Ruan, Changlan Xu, Youyou Hu, Mingming Zhang, Qingli Jing, Dongxu Chen and Jun Liu","doi":"10.1088/2040-8986/ad699f","DOIUrl":"https://doi.org/10.1088/2040-8986/ad699f","url":null,"abstract":"We focus on the transmission characteristics of Ince-Gaussian (IG) beams in oceanic turbulence which is simulated by the random phase screen method. The transmission characteristics of IG beams with different distances and turbulence intensities are also shown in the experiments. The impacts of the temperature and salinity in oceanic turbulence are discussed in detail. The experimental results show that the IG beam maintains the intensity distribution well after transmission. In addition, compared with the others’ structured beams, the IG beams show better robustness in oceanic turbulence with different salinity, turbulence intensity and suspended solids. Our work paves the way for leveraging IG beams in underwater optical communication.","PeriodicalId":16775,"journal":{"name":"Journal of Optics","volume":"4 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141940309","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
Realization of spinful metaphotonic stokes skyrmions 实现自旋元斯托克斯天空离子
IF 2.1 4区 物理与天体物理
Journal of Optics Pub Date : 2024-08-06 DOI: 10.1088/2040-8986/ad699e
Tianyue Li, Mengjiao Liu, Chen Chen, Xingyi Li, Jiahao Hou, Xing Yang, Shuming Wang and Shining Zhu
{"title":"Realization of spinful metaphotonic stokes skyrmions","authors":"Tianyue Li, Mengjiao Liu, Chen Chen, Xingyi Li, Jiahao Hou, Xing Yang, Shuming Wang and Shining Zhu","doi":"10.1088/2040-8986/ad699e","DOIUrl":"https://doi.org/10.1088/2040-8986/ad699e","url":null,"abstract":"Topologically protected skyrmion textures of light have garnered significant attention due to their potential applications in next-generation high-density data storage and logic devices. However, achieving compact and tunable on-chip skyrmion modes remains a formidable challenge. In this work, we present a novel approach empowered by birefringent metasurfaces to generate and manipulate spin-multiplexed photonic skyrmion textures. By encoding independent phase profiles onto orthogonal spin states, we observe the emergence of anti-skyrmions and skyrmioniums via Stokes parameter measurements, elucidating their distinct topological characteristics. This spin-multiplexed metasurface platform not only facilitates high-dimensional multiplexing but also enables the miniaturization of topological quasi-particles, offering promising prospects for applications in optical memory, information processing, and communications.","PeriodicalId":16775,"journal":{"name":"Journal of Optics","volume":"58 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141969166","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
Online nonlinearity elimination for fringe projection profilometry using slope intensity coding 利用斜率强度编码对条纹投影轮廓仪进行在线非线性消除
IF 2.1 4区 物理与天体物理
Journal of Optics Pub Date : 2024-07-31 DOI: 10.1088/2040-8986/ad44ad
Yingying Wan, Tao Tang, Jinlong Li, Kai Yang, Yu Zhang, Jianping Peng
{"title":"Online nonlinearity elimination for fringe projection profilometry using slope intensity coding","authors":"Yingying Wan, Tao Tang, Jinlong Li, Kai Yang, Yu Zhang, Jianping Peng","doi":"10.1088/2040-8986/ad44ad","DOIUrl":"https://doi.org/10.1088/2040-8986/ad44ad","url":null,"abstract":"The nonlinearity effect in the system of fringe projection profilometry can cause the non-sinusoidal deviation of the fringe patterns, inducing ripple-like phase errors and further affecting measurement accuracy. This paper presents an online nonlinearity elimination method based on slope intensity coding. Two sequences of sinusoidal phase-shifting fringe patterns with different frequencies, and one slope intensity pattern with one uniform intensity pattern are projected. The equations for the nonlinearity response are established using the defined mean and modulation parameters, the captured uniform intensity and two extracted background intensities. The nonlinearity response coefficients determined by solving the equations are used for pixel-wise nonlinearity correction on the captured images, which are employed for computing the wrapped phase, and further obtaining continuous phase by the multi-frequency phase unwrapping method. Experimental results demonstrate that the proposed method can eliminate the nonlinearity-induced phase error online by using fewer images and maintain the reliability of phase unwrapping in the measurement of isolated objects with complex surfaces.","PeriodicalId":16775,"journal":{"name":"Journal of Optics","volume":"33 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141862805","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信