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A wide bandwidth THz emission based on two color chirped laser plasma interaction 基于双色啁啾激光等离子体相互作用的宽带太赫兹发射
Optics continuum Pub Date : 2023-07-18 DOI: 10.1364/optcon.497701
masood saeed, A. Khorsandi
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引用次数: 0
A Compact Remote Raman System and Its Applications under Strong Sunlight Research 一种小型远程拉曼系统及其在强光照下的应用研究
Optics continuum Pub Date : 2023-07-17 DOI: 10.1364/optcon.489969
Zhicong Li, Bin Xue, Yi-yi Zhao, Shuaidong Huang, Yiheng Liu, Zongcheng Ling, Jian-feng Yang
{"title":"A Compact Remote Raman System and Its Applications under Strong Sunlight Research","authors":"Zhicong Li, Bin Xue, Yi-yi Zhao, Shuaidong Huang, Yiheng Liu, Zongcheng Ling, Jian-feng Yang","doi":"10.1364/optcon.489969","DOIUrl":"https://doi.org/10.1364/optcon.489969","url":null,"abstract":"","PeriodicalId":74366,"journal":{"name":"Optics continuum","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47677408","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
Engineerable Wavevector Diagrams of Non-Moiré Geometry-Based Photonic Crystals for Beam Steering Applications 用于光束导向应用的非莫尔几何光子晶体的可工程波向量图
Optics continuum Pub Date : 2023-07-11 DOI: 10.1364/optcon.495651
R. Darthy, C. Venkateswaran, L R Amruth Kumar, Yogesh Natesan
{"title":"Engineerable Wavevector Diagrams of Non-Moiré Geometry-Based Photonic Crystals for Beam Steering Applications","authors":"R. Darthy, C. Venkateswaran, L R Amruth Kumar, Yogesh Natesan","doi":"10.1364/optcon.495651","DOIUrl":"https://doi.org/10.1364/optcon.495651","url":null,"abstract":"","PeriodicalId":74366,"journal":{"name":"Optics continuum","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44487320","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
On-site road properties evaluation for dry and wet asphalt roads using an imaging luminance measurement device 使用成像亮度测量装置对干湿沥青路面的现场道路特性进行评估
Optics continuum Pub Date : 2023-07-11 DOI: 10.1364/optcon.495360
Cheng‐Hsien Chen, S. Hsu, Tsung-Hsun Yang, Ching-Cherng Sun
{"title":"On-site road properties evaluation for dry and wet asphalt roads using an imaging luminance measurement device","authors":"Cheng‐Hsien Chen, S. Hsu, Tsung-Hsun Yang, Ching-Cherng Sun","doi":"10.1364/optcon.495360","DOIUrl":"https://doi.org/10.1364/optcon.495360","url":null,"abstract":"","PeriodicalId":74366,"journal":{"name":"Optics continuum","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49288416","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
Visualizing laser ablation using plasma imaging and deep learning 使用等离子体成像和深度学习可视化激光消融
Optics continuum Pub Date : 2023-07-10 DOI: 10.1364/optcon.495923
J. Grant-Jacob, B. Mills, M. Zervas
{"title":"Visualizing laser ablation using plasma imaging and deep learning","authors":"J. Grant-Jacob, B. Mills, M. Zervas","doi":"10.1364/optcon.495923","DOIUrl":"https://doi.org/10.1364/optcon.495923","url":null,"abstract":"High power laser ablation can lead to the creation of plasma and the emission of bright light, which can prevent the direct observation of the workpiece. Alternative techniques for enabling the visualization of the sample during laser machining are therefore of interest. Here, we show that the plasma created during laser ablation, when viewed perpendicular to the sample surface, contains information regarding the appearance of the sample. Specifically, we show that deep learning can predict the 2D appearance of the sample, directly from 2D projected images of the plasma produced during single pulse femtosecond laser ablation. In addition, this approach also enables the identification of the pulse energy of the most recent laser pulse used to machine the sample. This work could have applications across laser materials processing in research and industry, in cases where there is a requirement for real-time visualization of the sample surface during laser ablation.","PeriodicalId":74366,"journal":{"name":"Optics continuum","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43785352","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
Spectral responses of tilted fiber Bragg grating coated with a thin Ge2Sb2Se4Te1 layer 薄层Ge2Sb2Se4Te1涂层倾斜光纤光栅的光谱响应
Optics continuum Pub Date : 2023-07-07 DOI: 10.1364/optcon.492830
C. Ooi, K. Lim, K. Ng, W. Chong, S. Gan, B. Goh, H. Ahmad
{"title":"Spectral responses of tilted fiber Bragg grating coated with a thin Ge2Sb2Se4Te1 layer","authors":"C. Ooi, K. Lim, K. Ng, W. Chong, S. Gan, B. Goh, H. Ahmad","doi":"10.1364/optcon.492830","DOIUrl":"https://doi.org/10.1364/optcon.492830","url":null,"abstract":"This article reports the spectral properties of a Ge2Sb2Se4Te1 (GSST) -coated tilted fiber Bragg grating to the changes of surrounding refractive index (SRI). The variations of the cladding mode resonance amplitudes and wavelengths under two orthogonal polarization modes are analyzed and validated with the simulation results. The introduction of the high index coating has induced non-degeneracy to the cladding modes, but the effect gradually diminishes with increasing SRI. The SRI sensitivities of the s-polarized modes have been substantially suppressed and became 20 times lower than that of p-polarized modes. The findings also reveal the association between the cladding resonance amplitudes, the imaginary part of the effective refractive indices and the evanescent field intensity distributions.","PeriodicalId":74366,"journal":{"name":"Optics continuum","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42322766","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
Focusing characteristic Change and Processing Characteristic Evaluation of Femtosecond-to-Picosecond Pulse Lasers Above Air Ionization Threshold 空气电离阈值以上飞秒至皮秒脉冲激光聚焦特性变化及加工特性评价
Optics continuum Pub Date : 2023-07-05 DOI: 10.1364/optcon.496411
Itsuki Nishibata, N. Nakanii, T. Sano
{"title":"Focusing characteristic Change and Processing Characteristic Evaluation of Femtosecond-to-Picosecond Pulse Lasers Above Air Ionization Threshold","authors":"Itsuki Nishibata, N. Nakanii, T. Sano","doi":"10.1364/optcon.496411","DOIUrl":"https://doi.org/10.1364/optcon.496411","url":null,"abstract":"","PeriodicalId":74366,"journal":{"name":"Optics continuum","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48823111","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
Titanium nitride based plasmonic nanoparticlesfor photovoltaic application 光电应用的氮化钛基等离子体纳米粒子
Optics continuum Pub Date : 2023-07-05 DOI: 10.1364/optcon.493184
Nowshin Akhtary, A. Zubair
{"title":"Titanium nitride based plasmonic nanoparticlesfor photovoltaic application","authors":"Nowshin Akhtary, A. Zubair","doi":"10.1364/optcon.493184","DOIUrl":"https://doi.org/10.1364/optcon.493184","url":null,"abstract":"","PeriodicalId":74366,"journal":{"name":"Optics continuum","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43568271","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: 2
Plasmon Tuning in Ultra-Thin Titanium NitrideFilms 超薄氮化钛薄膜中的等离子体调谐
Optics continuum Pub Date : 2023-07-04 DOI: 10.1364/optcon.486711
M. Islam, A. Zubair
{"title":"Plasmon Tuning in Ultra-Thin Titanium NitrideFilms","authors":"M. Islam, A. Zubair","doi":"10.1364/optcon.486711","DOIUrl":"https://doi.org/10.1364/optcon.486711","url":null,"abstract":"","PeriodicalId":74366,"journal":{"name":"Optics continuum","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46800384","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: 2
Generation of Bessel-like beams with reduced sidelobes for enhanced light-sheet microscopy 产生贝塞尔样光束与减少副瓣增强光片显微镜
Optics continuum Pub Date : 2023-06-30 DOI: 10.1364/optcon.493003
Jerin George, Kishan Dholakia, Shanti Bhattacharya
{"title":"Generation of Bessel-like beams with reduced sidelobes for enhanced light-sheet microscopy","authors":"Jerin George, Kishan Dholakia, Shanti Bhattacharya","doi":"10.1364/optcon.493003","DOIUrl":"https://doi.org/10.1364/optcon.493003","url":null,"abstract":"Bessel beams have found important applications due to their propagation invariant nature. However, the presence of sidelobes has proven a hindrance in key imaging and biophotonics applications. We describe the design and generation of sidelobe-suppressed Bessel-like beams (SSBB) that provide enhanced contrast for light-sheet imaging. The sidelobe suppression is achieved by the interference of two Bessel beams with slightly different wavevectors. Axicon phase functions for each Bessel beam are combined into a single phase function using the random multiplexing technique. This phase function is realised using a spatial light modulator to generate a SSBB. The generated beam at 633 nm has a 1/ e 2 radius of 44 µm and a propagation invariant distance of 39 mm which is more than four times that of the Rayleigh range of a Gaussian beam with the same 1/ e 2 radius. Within this distance, the overall peak intensity of the sidelobes of the SSBB is less than 10% that of the main lobe peak intensity. In addition, through numerical simulation for the recovery of spatial frequencies, we show that the SSBB improves image contrast compared to a Bessel beam for light-sheet imaging. We also show that the designed phase function can be realised using a meta-optical element.","PeriodicalId":74366,"journal":{"name":"Optics continuum","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135857727","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: 1
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