根据金属光栅的有效介电常数设计太赫兹偏振器和矢量偏振涡旋太赫兹波发生器

IF 3.2 2区 物理与天体物理 Q2 OPTICS Optics express Pub Date : 2024-09-03 DOI:10.1364/oe.530489
Mengqiang Cai, Zhixu Wu, Weichao Yan, Jiangtao Lei, Yong Xia, Rongxin Tang
{"title":"根据金属光栅的有效介电常数设计太赫兹偏振器和矢量偏振涡旋太赫兹波发生器","authors":"Mengqiang Cai, Zhixu Wu, Weichao Yan, Jiangtao Lei, Yong Xia, Rongxin Tang","doi":"10.1364/oe.530489","DOIUrl":null,"url":null,"abstract":"Polarization and phase devices for terahertz waves have important applications in terahertz detection, imaging, communication, etc. Spatially variable metal gratings can be used for broad-spectrum, miniaturized, and low-cost terahertz polarization and phase modulation devices. Based on the effective dielectric constant and the theory of light propagation in multilayer media, we obtain the relationship between the transmittance and extinction ratio and the parameters such as the duty cycle of the metal grating, the frequency of the incident terahertz wave, the angle of incidence, the thickness of the metal grating, the refractive index of the substrate, and the thickness of the substrate. We propose a method of designing a spatially variable metal grating located on a transparent substrate. The designed spatially variable metal grating is also used to modulate the terahertz spatial polarization and phase to generate terahertz optical fields whose polarization and phase change simultaneously in space, such as azimuthally vector vortex terahertz optical fields, radially vector vortex terahertz optical fields, and so on. This will have important applications in terahertz time-domain spectroscopic detection, terahertz time-domain spectroscopic imaging, terahertz time-domain near-field microscopic imaging, terahertz communication, and so on.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"20 1","pages":""},"PeriodicalIF":3.2000,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Design terahertz polarizers and vector polarized vortex terahertz wave generators based on the effective dielectric constant of metal gratings\",\"authors\":\"Mengqiang Cai, Zhixu Wu, Weichao Yan, Jiangtao Lei, Yong Xia, Rongxin Tang\",\"doi\":\"10.1364/oe.530489\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Polarization and phase devices for terahertz waves have important applications in terahertz detection, imaging, communication, etc. Spatially variable metal gratings can be used for broad-spectrum, miniaturized, and low-cost terahertz polarization and phase modulation devices. Based on the effective dielectric constant and the theory of light propagation in multilayer media, we obtain the relationship between the transmittance and extinction ratio and the parameters such as the duty cycle of the metal grating, the frequency of the incident terahertz wave, the angle of incidence, the thickness of the metal grating, the refractive index of the substrate, and the thickness of the substrate. We propose a method of designing a spatially variable metal grating located on a transparent substrate. The designed spatially variable metal grating is also used to modulate the terahertz spatial polarization and phase to generate terahertz optical fields whose polarization and phase change simultaneously in space, such as azimuthally vector vortex terahertz optical fields, radially vector vortex terahertz optical fields, and so on. This will have important applications in terahertz time-domain spectroscopic detection, terahertz time-domain spectroscopic imaging, terahertz time-domain near-field microscopic imaging, terahertz communication, and so on.\",\"PeriodicalId\":19691,\"journal\":{\"name\":\"Optics express\",\"volume\":\"20 1\",\"pages\":\"\"},\"PeriodicalIF\":3.2000,\"publicationDate\":\"2024-09-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Optics express\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1364/oe.530489\",\"RegionNum\":2,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"OPTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics express","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1364/oe.530489","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0

摘要

太赫兹波的偏振和相位装置在太赫兹检测、成像、通信等领域有着重要的应用。空间可变金属光栅可用于制造宽光谱、小型化和低成本的太赫兹偏振和相位调制器件。根据有效介电常数和光在多层介质中传播的理论,我们得到了透射率和消光比与金属光栅占空比、入射太赫兹波频率、入射角、金属光栅厚度、基板折射率和基板厚度等参数之间的关系。我们提出了一种在透明基板上设计空间可变金属光栅的方法。设计出的空间可变金属光栅还可用于调制太赫兹空间偏振和相位,以产生空间偏振和相位同时变化的太赫兹光场,如方位矢量涡旋太赫兹光场、径向矢量涡旋太赫兹光场等。这将在太赫兹时域光谱探测、太赫兹时域光谱成像、太赫兹时域近场显微成像、太赫兹通信等方面产生重要应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
Design terahertz polarizers and vector polarized vortex terahertz wave generators based on the effective dielectric constant of metal gratings
Polarization and phase devices for terahertz waves have important applications in terahertz detection, imaging, communication, etc. Spatially variable metal gratings can be used for broad-spectrum, miniaturized, and low-cost terahertz polarization and phase modulation devices. Based on the effective dielectric constant and the theory of light propagation in multilayer media, we obtain the relationship between the transmittance and extinction ratio and the parameters such as the duty cycle of the metal grating, the frequency of the incident terahertz wave, the angle of incidence, the thickness of the metal grating, the refractive index of the substrate, and the thickness of the substrate. We propose a method of designing a spatially variable metal grating located on a transparent substrate. The designed spatially variable metal grating is also used to modulate the terahertz spatial polarization and phase to generate terahertz optical fields whose polarization and phase change simultaneously in space, such as azimuthally vector vortex terahertz optical fields, radially vector vortex terahertz optical fields, and so on. This will have important applications in terahertz time-domain spectroscopic detection, terahertz time-domain spectroscopic imaging, terahertz time-domain near-field microscopic imaging, terahertz communication, and so on.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Optics express
Optics express 物理-光学
CiteScore
6.60
自引率
15.80%
发文量
5182
审稿时长
2.1 months
期刊介绍: Optics Express is the all-electronic, open access journal for optics providing rapid publication for peer-reviewed articles that emphasize scientific and technology innovations in all aspects of optics and photonics.
期刊最新文献
Adaptive generation of optical single-sideband signal with dually modulated EML. Manipulating reflection-type all-dielectric non-local metasurfaces via the parity of a particle number. SSBI counteraction technology in a single photodetector-based direct detection system receiving an independent dual-single sideband signal. Adaptive-modulated fast fluctuation super-resolution microscopy. Measurement and analysis of photoacoustic pressure induced by weak microsecond pulsed light.
×
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
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 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 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1