Photonics最新文献_第7页

Rapid Determination of Ochratoxin A in Black Tea Using Terahertz Ultrasensitive Biosensor 利用太赫兹超灵敏生物传感器快速测定红茶中的赭曲霉毒素 A

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-22 DOI: 10.3390/photonics11010009

Gan Chen, Bingwei Liu, Ping Lu, Yan Peng

{"title":"Rapid Determination of Ochratoxin A in Black Tea Using Terahertz Ultrasensitive Biosensor","authors":"Gan Chen, Bingwei Liu, Ping Lu, Yan Peng","doi":"10.3390/photonics11010009","DOIUrl":"https://doi.org/10.3390/photonics11010009","url":null,"abstract":"Ochratoxin A (OTA), which is highly toxic and carcinogenic, is easily produced in cereal crops, dry herbs, and other foods under improper storage. Traditional detection methods, including high-performance liquid chromatography (HPLC) and enzyme-linked immunosorbent assay (ELISA), can detect OTA accurately, but there are many problems such as long period, high cost, and poor reproducibility. Therefore, developing a rapid, non-destructive, and highly sensitive method for OTA detection is essential. In this paper, we used a surface plasmon resonance (SPR) biosensor combined with terahertz (THz) spectroscopy to quantify OTA. As a result, the concentration range of OTA in acetonitrile solution was up to 0–20 pg/μL, with a detection limit of 1 pg/μL, which can meet the requirements for OTA detection in most foods. Further, we applied this method to black tea, and the detection limit was up to 1 pg/mg, which is 500 times higher than UV spectrophotometry, and completely meets the EU regulations. This study shows that the combination of terahertz spectroscopy and an SPR biosensor is a promising approach to achieve a simple, rapid, and low-cost method for trace substance quantification in foods and drugs.","PeriodicalId":20154,"journal":{"name":"Photonics","volume":"7 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138947470","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

Coarse Integral Volumetric Imaging Display with Time and Polarization Multiplexing 具有时间和偏振复用功能的粗积分容积成像显示器

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-21 DOI: 10.3390/photonics11010007

Garimagai Borjigin, Yuqiang Ding, John Semmen, Hosna Tajvidi Safa, Hideki Kakeya, Shin-Tson Wu

引用次数: 0

An Integral-Equation-Based Variance Reduction Method for Accelerated Monte Carlo Simulations 基于积分方程的加速蒙特卡罗模拟方差缩小法

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-21 DOI: 10.3390/photonics11010005

D. Hevisov, Dominik Reitzle, A. Liemert, A. Kienle

引用次数: 0

A Parabolic Waveform Generator Based on the Chirp Characteristics of a Directly Modulated Laser 基于直接调制激光器啁啾特性的抛物线波形发生器

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-21 DOI: 10.3390/photonics11010004

Na Chen, Yang Jiang, Xiao Lan, Yuejiao Zi, Jing Xu, Jiahui Li, Qiong Zhang, Jinjian Feng

引用次数: 0

Towards Implementation of 3D Amplitude Shaping at 515 nm and First Pulseshaping Experiments at PITZ 在 515 纳米波段实现三维振幅整形以及在 PITZ 进行首次脉冲整形实验

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-21 DOI: 10.3390/photonics11010006

Andreas Hoffmann, J. Good, M. Gross, M. Krasilnikov, Frank Stephan

引用次数: 0

A Comprehensive Study on Phase Sensitive Amplification and Stimulated Brillouin Scattering in Nonlinear Fibers with Longitudinally Varying Dispersion 纵向色散变化非线性光纤中的相敏放大和受激布里渊散射综合研究

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-20 DOI: 10.3390/photonics11010003

Debanuj Chatterjee, Sugeet Sunder, Mrudula Krishna, Suchita Yadav, Alexej Sysoliatin, Konstantin Gochelashvili, Sergey Semjonov, D. Venkitesh, Andrey Konyukhov

{"title":"A Comprehensive Study on Phase Sensitive Amplification and Stimulated Brillouin Scattering in Nonlinear Fibers with Longitudinally Varying Dispersion","authors":"Debanuj Chatterjee, Sugeet Sunder, Mrudula Krishna, Suchita Yadav, Alexej Sysoliatin, Konstantin Gochelashvili, Sergey Semjonov, D. Venkitesh, Andrey Konyukhov","doi":"10.3390/photonics11010003","DOIUrl":"https://doi.org/10.3390/photonics11010003","url":null,"abstract":"Fiber optic parametric and phase sensitive amplifiers (PSA) are interesting for modern day communication technologies due to their low noise and high gain amplification properties with a potential for all optical signal processing and wide band operation. PSAs are typically employed in either a single pump or dual pump configuration. In this article we explore the utilities of both configurations, however considering a fiber with a longitudinally varying dispersion profile. For the single pump case, PSA operation at large pump-signal detunings, that arise due to the longitudinal dispersion variation, were studied numerically, and recipes of using the system as a wide band wavelength selective filter were laid out. For the dual-pump case, emphasis was laid on achieving a larger signal gain, by reducing stimulated Brillouin scattering (SBS) that prevents large pump power transport through the nonlinear fiber. First, the effects of dispersion variation on the gain of a dual pump PSA were studied analytically and numerically in order to optimize the dispersion variation profile, neglecting SBS processes. Then we independently studied the SBS dynamics of the system numerically. A sinusoidally dispersion oscillating fiber (DOF) was found to be an optimal candidate with respect to its PSA and SBS performances. To establish this claim, we also experimentally compared the performance of an available DOF over a standard highly nonlinear fiber (HNLF) that has a constant dispersion profile and established its utility for designing a high gain PSA system, thanks to the SBS mitigation due to the longitudinal dispersion variation of the fiber.","PeriodicalId":20154,"journal":{"name":"Photonics","volume":"82 10","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138956818","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

Research on the Structure Design of Silicon Avalanche Photodiode with Near-Ultraviolet High Responsivity 近紫外高响应硅雪崩光电二极管结构设计研究

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-19 DOI: 10.3390/photonics11010001

Guangtong Guo, Wei Chen, Kaifeng Zheng, Jinguang Lv, Yuxin Qin, Baixuan Zhao, Yingze Zhao, Yupeng Chen, Dan-ning Gao, Jingqiu Liang, Weibiao Wang

引用次数: 0

Generation of Narrow Modes in Random Raman Fiber Laser Based on Multimode Fiber 基于多模光纤的随机拉曼光纤激光器窄模的产生

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-19 DOI: 10.3390/photonics11010002

I. Vatnik, Oleg A. Gorbunov, Dmitry V. Churkin

引用次数: 0

A Laser with Intracavity Spectral Beam Combining with Continuous-Wave and Pulse-Periodic Pumping of Various Lasing Channels 带有腔内光谱光束组合的激光器，采用连续波和脉冲周期泵浦的各种激光通道

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-18 DOI: 10.3390/photonics10121389

Vladimir Kamynin, Vitalii V. Kashin, Dmitri A. Nikolaev, A. Trikshev, Vladimir B. Tsvetkov

引用次数: 0

Tuning Q-Factor and Perfect Absorption Using Coupled Tamm States on Polarization-Preserving Metasurface 利用偏振保持元表面上的耦合塔姆态调谐 Q 因子和完美吸收

IF 2.4 4区物理与天体物理

Photonics Pub Date : 2023-12-18 DOI: 10.3390/photonics10121391

N. V. Rudakova, Rashid G. Bikbaev, Larisa E. Tyryshkina, Stepan Ya. Vetrov, I. Timofeev

{"title":"Tuning Q-Factor and Perfect Absorption Using Coupled Tamm States on Polarization-Preserving Metasurface","authors":"N. V. Rudakova, Rashid G. Bikbaev, Larisa E. Tyryshkina, Stepan Ya. Vetrov, I. Timofeev","doi":"10.3390/photonics10121391","DOIUrl":"https://doi.org/10.3390/photonics10121391","url":null,"abstract":"The circular polarization of light flips its handedness after a conventional metallic mirror reflection. Therefore, a polarization-preserving metasurface is a crucially important element in a series of chiral photonic structures. They include tunable cholesteric LCs and anisotropic photonic crystals. Chiral structures are rich in interfacial localized modes including Tamm states. In this report, coupled modes formed as a result of the interaction between two chiral optical Tamm states or a chiral optical Tamm state and a chiral Tamm plasmon polariton are analytically and numerically investigated. It is shown that the effective control of coupled modes can be carried out by changing the pitch of the cholesteric and the angle between the optical axis of the cholesteric and the polarization-preserving anisotropic mirror. The influence of the metasurface period on the spectral characteristics of coupled modes is investigated. The possibility of realizing a bound state in the continuum of the Friedrich–Wintgen type, resulting from the destructive interference of coupled modes, which leads to the collapse of the resonance line corresponding to the chiral optical Tamm state, has been demonstrated.","PeriodicalId":20154,"journal":{"name":"Photonics","volume":"11 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139175974","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