SPIE/COS Photonics Asia最新文献

Parity-time symmetry mode of coupled subwavelength silicon rectangular gratings 耦合亚波长硅矩形光栅的奇偶时对称模式

SPIE/COS Photonics Asia Pub Date : 2023-11-30 DOI: 10.1117/12.2687284

Igor R. Krylov, Uliana V. Prokhorova, Vasiliy A. Stolyarov, Ekaterina A. Efremova, A. A. Zinchik, E. Shalymov, V. Shoev, Dmitriy V. Masygin, Vladimir Y. Venediktov

引用次数: 0

Plasmonic nanostructures for environmental monitoring and/or biological applications 用于环境监测和/或生物应用的等离子纳米结构

SPIE/COS Photonics Asia Pub Date : 2023-11-29 DOI: 10.1117/12.2689048

Yifei Gao, Zhenyu Xu, Zilin Jiang, Natalie Earnhardt, D. Kotsifaki

引用次数: 0

Strong coupling of the guided modes with BIC generation in graphene-based one-dimensional dielectric gratings 石墨烯基一维介电光栅中的导波模式与 BIC 生成的强耦合作用

SPIE/COS Photonics Asia Pub Date : 2023-11-29 DOI: 10.1117/12.2687502

Yuchen Wang, Wei Qiu, Lu Chen, Chengchen Bi, Xiaoyun Jiang, Leiming Zhou, Yuwei Fang, Jigang Hu

引用次数: 0

Application of SERS method for detection of methotrexate molecules in human plasma 应用 SERS 方法检测人体血浆中的甲氨蝶呤分子

SPIE/COS Photonics Asia Pub Date : 2023-11-29 DOI: 10.1117/12.2689134

E. Demishkevich, Andrey Y. Zyubin, Vladimir Rafalskiy, Svetlana Doktorova, A. Kundalevich, Alexander Zozulya, Denis Evtifeev, Ilya Samusev

引用次数: 0

Self-assembled plasmonic silver nanoparticle films on anodic alumina for SERS applications 阳极氧化铝上用于 SERS 应用的自组装等离子银纳米粒子薄膜

SPIE/COS Photonics Asia Pub Date : 2023-11-29 DOI: 10.1117/12.2686292

Igor Y. Nikitin, Ksenia Maleeva, Daria A. Kafeeva, Alexey V. Nashyokin, Igor A. Gladskikh

引用次数: 0

Analysis of sensing characteristics of plasmonic elliptical ring resonator based refractive index sensor 基于质子椭圆环谐振器的折射率传感器传感特性分析

SPIE/COS Photonics Asia Pub Date : 2023-11-29 DOI: 10.1117/12.2685380

Rahul Pandey, Rukhsar Zafar, Santosh Kumar, Ghanshyam Singh, R. Mitharwal, Manisha Bharati

{"title":"Analysis of sensing characteristics of plasmonic elliptical ring resonator based refractive index sensor","authors":"Rahul Pandey, Rukhsar Zafar, Santosh Kumar, Ghanshyam Singh, R. Mitharwal, Manisha Bharati","doi":"10.1117/12.2685380","DOIUrl":"https://doi.org/10.1117/12.2685380","url":null,"abstract":"The current research proposes the development of a plasmonic elliptical ring resonator structure with a Metal (Ag) Insulator Metal (Ag) waveguide configuration for the purpose of bio sensing. The research involves a distinctive exploration of the sensitivity and peak resonance wavelength, which are found to be varied by altering the aspect ratio of the elliptical ring resonator. The results reveal a marked increase in sensitivity, ranging from 732.60 nm/RIU to 1113.70nm/RIU, by changing the aspect ratio (ratio of major to minor radius of elliptical ring resonator) from 1.61 to 3.72. Furthermore, these adjustments produce a noticeable redshift in the peak resonance wavelength, as the aspect ratio increases. The study also highlights the impact of other geometrical factors of the sensor on its sensing characteristics. It is found that sensitivity changes significantly with the change in width of resonator and linear waveguide, and it is found to be decreased when width increases. The results of variation in width of waveguides reveals that there occurs a red shift in resonance wavelength when width decrease and vice versa. Based on the finding of all significant geometrical factors an optimized structure is selected with the optimum value of sensitivity. Which evidences its suitability for biosensing purpose and with its superior capabilities, the sensor can play a crucial role in distinguishing between healthy and cancerous cell and will be helpful in detecting cancer at early stage. The investigation and observations involved in the process are computed numerically using the finite difference in time domain method (FDTD).","PeriodicalId":149506,"journal":{"name":"SPIE/COS Photonics Asia","volume":"5 1","pages":"1277406 - 1277406-8"},"PeriodicalIF":0.0,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139212934","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

High-performance 3D light field display based on distortion suppressed compound lens and pre-correction encoded image 基于畸变抑制复合透镜和预校正编码图像的高性能 3D 光场显示器

SPIE/COS Photonics Asia Pub Date : 2023-11-28 DOI: 10.1117/12.2688607

Xinzhu Sang, Xudong Wen, Xin Gao, Xunbo Yu

{"title":"High-performance 3D light field display based on distortion suppressed compound lens and pre-correction encoded image","authors":"Xinzhu Sang, Xudong Wen, Xin Gao, Xunbo Yu","doi":"10.1117/12.2688607","DOIUrl":"https://doi.org/10.1117/12.2688607","url":null,"abstract":"For an advanced three-dimensional (3D) light field display, the 3D image information with correct spatial occlusion relation should be provided in a large viewing angle range. However, the optical distortion and the structural error are two key factors of the deterioration in image quality, which cause the serious deformation of 3D images, especially in large viewing angle. Here, the light path of spatial voxel is analyzed. The mathematical relationship between optical system parameters and spatial voxel positions is achieved. The aberration theory is used to analyze the optical distortion of single lenses. Due to the influence of optical distortion, the angle of the emitted light deviates from the ideal direction, which leads to the deviation of spatial voxel positions. The compound lens with aperture-stop is designed to suppress the optical distortion. The optical performance of optimized compound lens is evaluated. In order to further suppress the residual optical distortion and the structural error, a pre-correction method with the detection of optical path error is proposed. The correspondence between the pixel of display source and the spatial voxel is obtained. Based on the designed compound lens and pre-correction encoded image, a 3D light field display system is constructed. Experimental results demonstrates that the proposed method suppresses the optical distortion and the structural error. An undeformed 3D image with the viewing angle above 100 degrees can be achieved, which can find potential applications in biomedical imaging and visualization to enhance medical analysis and diagnosis.","PeriodicalId":149506,"journal":{"name":"SPIE/COS Photonics Asia","volume":"115 1","pages":"1276507 - 1276507-5"},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139218848","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

Advances in computer-generated hologram for rendering and acceleration based on the point-polygon hybrid method 基于点-多边形混合法的计算机生成全息图渲染和加速技术的进步

SPIE/COS Photonics Asia Pub Date : 2023-11-28 DOI: 10.1117/12.2684721

Fan Wang, David Blinder, T. Ito, T. Shimobaba

引用次数: 0

Quasi-non-diffracting static light sheets generated by multiple slit interference mask 多狭缝干涉掩模产生的准非衍射静态光片

SPIE/COS Photonics Asia Pub Date : 2023-11-28 DOI: 10.1117/12.2686657

Dennis Angelo L. Pablico, Nathaniel P. Hermosa

{"title":"Quasi-non-diffracting static light sheets generated by multiple slit interference mask","authors":"Dennis Angelo L. Pablico, Nathaniel P. Hermosa","doi":"10.1117/12.2686657","DOIUrl":"https://doi.org/10.1117/12.2686657","url":null,"abstract":"Ultrathin non-diffracting light sheets are crucial for light sheet fluorescence microscopy to provide near-diffraction-limited resolutions over a large field of view. Non-diffracting beams such as Bessel or Airy beams generate semi-uniform LSs that feature wide span ranges but often come with strong sidelobes or increased thickness. Moreover, they require scanning, extensive adjustments, and are costly. Through computer simulations, we show here that it is possible to generate quasi-non-diffracting static light sheets with suppressed side lobes in a simple and efficient fashion. This is achieved by placing a multiple slit interference mask (MSIM) on a cylindrical lens. As the name MSIM implies, our technique merely relies on the well-known physics of multi-slit interference to engineer light sheets. Simply dialing the mask’s geometry enables us to generate sidelobe-free light sheets with limited length or ones with a longer length but a broader thickness. This new technique promises to be adaptive in various in vivo and in vitro imaging configurations since we can engineer the light sheet, i.e., make it smaller or larger depending on the needed resolution, the size of the field of view, and the optical properties of the biological sample. This development holds significant potential for advancing microscopy techniques and facilitating groundbreaking discoveries in various biological and biomedical research fields.","PeriodicalId":149506,"journal":{"name":"SPIE/COS Photonics Asia","volume":"9 1","pages":"127650T - 127650T-7"},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139220111","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

Design of encapsulated transmission grism with high diffraction efficiency and low polarization 设计具有高衍射效率和低偏振的封装透射光栅

SPIE/COS Photonics Asia Pub Date : 2023-11-28 DOI: 10.1117/12.2689070

Yuedan Wu, Huiying Chen, Muran He, Weimin Shen

{"title":"Design of encapsulated transmission grism with high diffraction efficiency and low polarization","authors":"Yuedan Wu, Huiying Chen, Muran He, Weimin Shen","doi":"10.1117/12.2689070","DOIUrl":"https://doi.org/10.1117/12.2689070","url":null,"abstract":"In view of the problems that the existing subwavelength transmission grating structure parameters require high processing technologies and are difficult to prepare, this paper explores and investigates the design simulation of encapsulated grism grating based on the finite element method (FEM). The variation of diffraction efficiency and polarization sensitivity of encapsulated grism is explored for different groove structures, trench depth and duty cycle, according to the requirements of high diffraction efficiency and low polarization sensitivity. The grating surface etched onto a fused silica substrate is formed by binary structure of grooves and trenches filled by a high refractive index multi-layer coating, working at Littrow configuration in the SWIR-1 (1590-1625nm) and SWIR-2 (1635-1670nm). The simulation results show that the average diffraction efficiency exceeds 85% and the polarization sensitivity is less than 5% with a wide tolerance range when the depth-period ratio is about 2 and the duty cycle is around 0.6. The diffraction efficiency and polarization sensitivity meet the design requirements, substantially improving the efficiency of transmission grating design and processing. This enables compact optical design to achieve high signal-to-noise ratio and low stray light to meet the critical radiation measurement accuracy requirements.","PeriodicalId":149506,"journal":{"name":"SPIE/COS Photonics Asia","volume":"50 1","pages":"127650W - 127650W-6"},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139221342","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