Laser Physics Letters最新文献_第6页

Quasi-classical theory of cyclotron resonance with accounting for dissipation 考虑耗散的回旋共振准经典理论

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-03-27 DOI: 10.1088/1612-202x/ad3628

S V Sazonov

引用次数: 0

Fine structure of polarization and optical Möbius strips topology of laser light in planar metamaterial 平面超材料中激光的偏振精细结构和光学莫比乌斯带拓扑结构

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-03-27 DOI: 10.1088/1612-202x/ad3622

N Yu Kuznetsov, N N Potravkin, V A Makarov

引用次数: 0

Inducing torque on molecular magnets via Laguerre Gaussian beams 通过拉盖尔高斯束在分子磁体上诱导扭矩

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-03-27 DOI: 10.1088/1612-202x/ad3623

Gang Lei, Shanzhi Li

引用次数: 0

Photodynamic processes for water and wastewater treatment: a review 用于水和废水处理的光动力工艺：综述

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-03-26 DOI: 10.1088/1612-202x/ad3438

Kamila Jessie Sammarro Silva, Alessandra Ramos Lima, Lucas Danilo Dias, Matheus Garbuio, Mariana de Souza, Thaila Quatrini Correa, Kate Cristina Blanco, Edgar Aparecido Sanches, Vanderlei Salvador Bagnato, Natalia Mayumi Inada

{"title":"Photodynamic processes for water and wastewater treatment: a review","authors":"Kamila Jessie Sammarro Silva, Alessandra Ramos Lima, Lucas Danilo Dias, Matheus Garbuio, Mariana de Souza, Thaila Quatrini Correa, Kate Cristina Blanco, Edgar Aparecido Sanches, Vanderlei Salvador Bagnato, Natalia Mayumi Inada","doi":"10.1088/1612-202x/ad3438","DOIUrl":"https://doi.org/10.1088/1612-202x/ad3438","url":null,"abstract":"Photodynamic therapy (PDT) has been widely employed in clinical applications, healthcare, and public health (e.g. cancer research, microbiological control, vector control, etc). The photodynamic action is an advanced oxidation process based on the production of reactive oxygen species (ROS) and singlet oxygen by the excitation of a photosensitizer by specific wavelengths of light in the presence of molecular oxygen. The generation of ROS, which are highly reactive, encourages the use of PDT against recalcitrant pollutants and resistant parasites, a novel approach for PDT applications. Here, we explored recent research in PDT in water and wastewater treatment, elucidating operational conditions, main targets, potentials, and constraints, considering a collection of scientific papers curated by a well-defined research strategy. Retrieved records were filtered by subjects, and data was organized into a content network. Results showed that PDT is a timely alternative to deal with emerging chemical contaminants, resistant microorganisms, and other challenges, raising opportunities for versatile applications and sustainable solutions. Advances in environmental applications of PDT may help reach the Sustainable Development Goal 6 (SDG 6), but also positively impact other SDGs.","PeriodicalId":17940,"journal":{"name":"Laser Physics Letters","volume":"31 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140316136","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

1.3 μm InAs/GaAs quantum-dot lasers grown on planar on-axis Si (001) substrates with high slope-efficiency and low differential resistance 在平面同轴硅 (001) 衬底上生长的 1.3 μm InAs/GaAs 量子点激光器具有高斜率效率和低差分电阻

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-03-25 DOI: 10.1088/1612-202x/ad3439

Feng Lin, Jun Wang, Hao Zhai, Shuaicheng Liu, Qing Ge, Yanan Chen, Chuanjiang Liu, Kaize Mao, Hao Liu, Yiming Bai, Qi Wang, Yongqing Huang, Xiaomin Ren

{"title":"1.3 μm InAs/GaAs quantum-dot lasers grown on planar on-axis Si (001) substrates with high slope-efficiency and low differential resistance","authors":"Feng Lin, Jun Wang, Hao Zhai, Shuaicheng Liu, Qing Ge, Yanan Chen, Chuanjiang Liu, Kaize Mao, Hao Liu, Yiming Bai, Qi Wang, Yongqing Huang, Xiaomin Ren","doi":"10.1088/1612-202x/ad3439","DOIUrl":"https://doi.org/10.1088/1612-202x/ad3439","url":null,"abstract":"We report electrically pumped continuous-wave (CW) InAs/GaAs quantum dot lasers monolithically grown on planar on-axis Si (001) substrates. Combining an asymmetric waveguide epitaxy structure with aluminium-free upper cladding layers and a symmetrical cathode chip structure, 1.3 <italic toggle=\"yes\">μ</italic>m band lasers with low differential resistance and high slope-efficiency have been achieved. Moreover, the optimized symmetrical cathode structure of the laser chips is used to improve the slope-efficiency by reducing the differential resistance and waste heat. The Fabry–Perot broad-stripe edge-emitting lasers with 2000 <italic toggle=\"yes\">μ</italic>m cavity length and 15 <italic toggle=\"yes\">μ</italic>m stripe width achieve a single-facet output power of 73 mW, a single-facet slope efficiency of 0.165 W A<sup>−1</sup>, and a differential resistance of 1.31 Ω at ∼1.31 <italic toggle=\"yes\">μ</italic>m wavelength under CW conditions at room temperature (25 °C). Importantly, these results provide an effective strategy to achieve 1.3 <italic toggle=\"yes\">μ</italic>m wavelength band single-mode distributed feedback lasers directly on planar on-axis Si (001) substrates with high efficiency.","PeriodicalId":17940,"journal":{"name":"Laser Physics Letters","volume":"52 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140315854","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

Phase-modulated single-photon router and chiral scattering between two waveguides coupled by a giant three-level atom 相位调制单光子路由器和巨型三电平原子耦合的两个波导之间的手性散射

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-03-25 DOI: 10.1088/1612-202x/ad3436

J X Zhou, Z H Zhu, Y Q Zhang, K K Chen, Z H Peng, Y F Chai, Z Z Xiong, L Tan

引用次数: 0

Quantum coherence and entanglement under the influence of decoherence 退相干影响下的量子相干和纠缠

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-03-06 DOI: 10.1088/1612-202x/ad2dc8

Wen-Yang Sun, A-Min Ding, Juan He, Jiadong Shi, Le Wang, Hui-Fang Xu, Dong Wang, Liu Ye

引用次数: 0

Correlations in strong-field-emitted ultrashort electron pulses from metal needle tips 金属针尖强场发射超短电子脉冲的相关性

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-02-29 DOI: 10.1088/1612-202x/ad2b5a

S Meier, J Heimerl, P Hommelhoff

{"title":"Correlations in strong-field-emitted ultrashort electron pulses from metal needle tips","authors":"S Meier, J Heimerl, P Hommelhoff","doi":"10.1088/1612-202x/ad2b5a","DOIUrl":"https://doi.org/10.1088/1612-202x/ad2b5a","url":null,"abstract":"When two electrons are emitted from a metal needle tip with the help of femtosecond laser pulses, they show a strong anticorrelation signal in the energy domain. Depending on the wavelength and intensity of the driving laser pulses, the electron emission process can be either in a perturbative regime, like single- or multi-photon photoemission, or in the strong-field regime, where emission is dominated by the instantaneous electric field of the laser pulse, or in the intermediate regime. Here, we report on the two-electron anticorrelation signal and how it evolves from the multiphoton toward the strong-field emission regime. We show that in both cases, the resulting anticorrelation signal can be well explained by semi-classical simulations using a point-particle model, thus the dynamics is dominated by the center-of-mass dynamics of the individual electrons. However, the actual emission process of multiple interacting electrons requires improved quantum mechanical models and therefore remains the subject of future work.This paper is part of the Special Topic Collection: papers from the 31th Annual International Laser Physics Workshop 2023 (LPHYS 2023).","PeriodicalId":17940,"journal":{"name":"Laser Physics Letters","volume":"44 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140315796","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

Orbital angular momentum sensing of composite vortex light in a single-layer graphene system 单层石墨烯系统中复合涡旋光的轨道角动量感应

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-02-26 DOI: 10.1088/1612-202x/ad2920

S I S Al-Hawary, Farag M A Altalbawy, C Rodriguez-Benites, A Kumar, Wesam R Kadhum, N Zaurbekova, H A Abbas, S J Shoja, A Alawadi, R Sivaraman

{"title":"Orbital angular momentum sensing of composite vortex light in a single-layer graphene system","authors":"S I S Al-Hawary, Farag M A Altalbawy, C Rodriguez-Benites, A Kumar, Wesam R Kadhum, N Zaurbekova, H A Abbas, S J Shoja, A Alawadi, R Sivaraman","doi":"10.1088/1612-202x/ad2920","DOIUrl":"https://doi.org/10.1088/1612-202x/ad2920","url":null,"abstract":"This paper explores the impact of orbital angular momentum (OAM) in composite vortex light on the absorption and dispersion characteristics of a weak probe light interacting with a single-layer graphene system. Through systematic investigation, we demonstrate the exceptional control achievable over absorption and dispersion profiles by manipulating the OAM of light. Under resonance conditions for the probe light, transparent regions emerge in the spatial profile of probe absorption, and the number of these transparent regions can be precisely regulated by adjusting the OAM number of the composite vortex light. Conversely, in the case of off-resonance probe light, amplified regions surface in the absorption spectrum, with the number of these regions controllable by the OAM state of the composite vortex light. These findings hold significant implications for optical communication systems, offering a valuable tool for the detection and measurement of the OAM number of composite vortex light, and paving the way for advancements in tailored signal processing and communication technologies.","PeriodicalId":17940,"journal":{"name":"Laser Physics Letters","volume":"17 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140003206","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

The violet laser irradiation influence on the dispersive properties of the PVA/MO composite thick 紫激光辐照对 PVA/MO 复合厚材分散特性的影响

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-02-26 DOI: 10.1088/1612-202x/ad291e

Sarah Maysam T, Nihal A AbdulWahhab, Addnan H Al-Arajiy

引用次数: 0