Laser Physics Letters最新文献_第7页

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

Weighted monogamy and polygamy relations 加权一夫一妻制和一夫多妻制的关系

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-02-23 DOI: 10.1088/1612-202x/ad2921

Yue Cao, Naihuan Jing, Yiling Wang

引用次数: 0

Flexible preparation of the W state via the GRAPE algorithm in a nanoring-quantum-dot system 在纳米量子点系统中通过 GRAPE 算法灵活制备 W 态

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-02-22 DOI: 10.1088/1612-202x/ad2923

Zhen Chen, Zhi-Cheng Shi, Jie Song, Bi-Hua Huang, Yan Xia

引用次数: 0

Sub-50 fs pulses generation from an all-fiber monolithic gain-managed nonlinear amplifier with CFBG-based pre-compressor 利用基于 CFBG 的预压缩器从全光纤单片增益管理非线性放大器生成 50 fs 以下脉冲

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-02-21 DOI: 10.1088/1612-202x/ad291f

Qianglong Li, Feng Li, Hongjun Liu, Wei Zhao, Xue Cao, Hualong Zhao, Yishan Wang, Wenlong Wen, Jinhai Si

引用次数: 0

Quasi-classical dynamics of a charged particle under conditions of ionization losses in a weak magnetic field 带电粒子在弱磁场中电离损耗条件下的准经典动力学

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-02-21 DOI: 10.1088/1612-202x/ad2925

S V Sazonov

引用次数: 0

Quench dynamics of a Tonks-Girardeau gas in one dimensional anharmonic trap 一维非谐波陷阱中唐克斯-吉拉尔多气体的淬火动力学

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-02-12 DOI: 10.1088/1612-202x/ad21eb

Pankaj Kumar Debnath, Barnali Chakrabarti, Mantile Leslie Lekala

引用次数: 0

Knob of adjusting light group velocity in an inhomogeneously broadened degenerate two-level atomic medium by a magnetic field 用磁场调节不均匀拓宽的退化两级原子介质中的光群速度的旋钮

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-02-07 DOI: 10.1088/1612-202x/ad244a

Anh Nguyen Tuan, Thanh Thai Doan, Bang Nguyen Huy, Nga Luong Thi Yen, Dong Hoang Minh

引用次数: 0

THz transition radiation of electron bunches laser-accelerated in long-scale near-critical-density plasmas 长尺度近临界密度等离子体中激光加速的电子束太赫兹过渡辐射

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-02-01 DOI: 10.1088/1612-202x/ad21ed

D A Gorlova, I N Tsymbalov, I P Tsygvintsev, A B Savelev

{"title":"THz transition radiation of electron bunches laser-accelerated in long-scale near-critical-density plasmas","authors":"D A Gorlova, I N Tsymbalov, I P Tsygvintsev, A B Savelev","doi":"10.1088/1612-202x/ad21ed","DOIUrl":"https://doi.org/10.1088/1612-202x/ad21ed","url":null,"abstract":"Direct laser electron acceleration in near-critical density plasma produces collimated electron beams with high charge <italic toggle=\"yes\">Q</italic> (up to <italic toggle=\"yes\">µ</italic>C). This regime could be of interest for high-energy THz radiation generation, as many of the mechanisms have a scaling <inline-formula>\u0000<tex-math><?CDATA $propto Q^2$?></tex-math>\u0000<mml:math overflow=\"scroll\"><mml:mo>∝</mml:mo><mml:msup><mml:mi>Q</mml:mi><mml:mn>2</mml:mn></mml:msup></mml:math>\u0000<inline-graphic xlink:href=\"lplad21edieqn1.gif\" xlink:type=\"simple\"></inline-graphic>\u0000</inline-formula>. In this work, we focus specifically on the challenges that arise during numerical investigations of transition radiation in such interactions. Detailed analytical calculations that include both the diffraction and decoherence effects of the characteristics of transition radiation in the THz range were conducted with the input parameters obtained from 3D particle-in-cell and hydrodynamic simulations. The calculated characteristics of THz radiation are in good agreement with the experimentally measured ones. Therefore, this approach can be used both to optimize the properties of THz radiation and to distinguish the transition radiation contribution if several mechanisms of THz radiation generation are considered.","PeriodicalId":17940,"journal":{"name":"Laser Physics Letters","volume":"110 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139757569","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