Laser Physics最新文献_第3页

Electromagnetically induced transparency with magnetically induced ΔF=0,mF=0→mF=0 probe transition 电磁诱导透明度与磁诱导 ΔF=0,mF=0→mF=0 探针转换

IF 1.2 4区物理与天体物理

Laser Physics Pub Date : 2024-07-02 DOI: 10.1088/1555-6611/ad5157

Armen Sargsyan, David Sarkisyan and Aram Papoyan

引用次数: 0

Optimal convex approximations of qubit states under Pauli distance 保利距离下的量子比特态最优凸近似

IF 1.2 4区物理与天体物理

Laser Physics Pub Date : 2024-06-26 DOI: 10.1088/1555-6611/ad5981

Li-qiang Zhang, Kai Shi and Chang-shui Yu

引用次数: 0

A crosstalk-free multiple-image encryption scheme based on computational ghost imaging with binarized detection 基于二值化检测计算鬼影成像的无串扰多图像加密方案

IF 1.2 4区物理与天体物理

Laser Physics Pub Date : 2024-06-23 DOI: 10.1088/1555-6611/ad4eb7

Xing Bai, Sheng Yuan, Zhan Yu, Yujie Wang, Xingyu Chen, Yang Liu, Mingze Sun, Xinjia Li and Xin Zhou

{"title":"A crosstalk-free multiple-image encryption scheme based on computational ghost imaging with binarized detection","authors":"Xing Bai, Sheng Yuan, Zhan Yu, Yujie Wang, Xingyu Chen, Yang Liu, Mingze Sun, Xinjia Li and Xin Zhou","doi":"10.1088/1555-6611/ad4eb7","DOIUrl":"https://doi.org/10.1088/1555-6611/ad4eb7","url":null,"abstract":"Crosstalk noise is a main problem limiting the performance of multiple-image encryption (MIE) scheme. In this work, we proposed a crosstalk-free MIE scheme based on computational ghost imaging (CGI) with binarized detection. In the encryption process, the plaintext images are encrypted into intensity sequences by the CGI system and quantified into two levels to obtain binary ciphertext sequences, which does not cause severe degradation in decrypted image quality compared to traditional CGI. Then, for the binary ciphertext sequences, we can combine them into a decimal grayscale ciphertext. To enhance security, a pixel bit layer scrambling (PBLS) algorithm is designed to scramble the grayscale ciphertext to obtain the final ciphertext. In the decryption process, anyone of the plaintext images can be decrypted without being affected by other plaintext images after performing inverse PBLS algorithm on the ciphertext and extracting the binary ciphertext sequence. The effectiveness, robustness, encryption capacity and security of the proposed scheme are demonstrated by numerical simulations and theoretical analysis.","PeriodicalId":17976,"journal":{"name":"Laser Physics","volume":"173 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510185","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

Tailoring the visible light band of Watt-level SCs pumped via picosecond pulse with different Raman extent 用不同的拉曼程度调整通过皮秒脉冲泵浦的瓦特级 SC 的可见光波段

IF 1.2 4区物理与天体物理

Laser Physics Pub Date : 2024-06-20 DOI: 10.1088/1555-6611/ad552f

Yashuai Guo, Zhenguang Wang, Xiaohong Hu, Ting Zhang, Zhao Zhang, Wei Zhang and Yishan Wang

引用次数: 0

Cherenkov second harmonic generation of femtosecond laser pulses in a homogeneous nonlinear crystal 均质非线性晶体中飞秒激光脉冲的切伦科夫二次谐波生成

IF 1.2 4区物理与天体物理

Laser Physics Pub Date : 2024-06-19 DOI: 10.1088/1555-6611/ad5156

A M Vyunishev and A S Chirkin

引用次数: 0

A selective and sensitive mercury sensor for drinking water based on fluorescence quenching of pure rhodamine B 基于纯罗丹明 B 荧光淬灭的饮用水选择性灵敏汞传感器

IF 1.2 4区物理与天体物理

Laser Physics Pub Date : 2024-06-19 DOI: 10.1088/1555-6611/ad5533

Seikh Mustafa Radiul and Simanta Hazarika

{"title":"A selective and sensitive mercury sensor for drinking water based on fluorescence quenching of pure rhodamine B","authors":"Seikh Mustafa Radiul and Simanta Hazarika","doi":"10.1088/1555-6611/ad5533","DOIUrl":"https://doi.org/10.1088/1555-6611/ad5533","url":null,"abstract":"The escalating threat of industrial pollutants, particularly heavy metals, in water sources poses a significant risk to global populations. Among these heavy metals, mercury stands out as a severe contaminant with detrimental health implications. This paper introduces a novel and efficient method for the selective detection of mercury ions in drinking water, employing laser-induced fluorescence with pure rhodamine B as the sensing probe. The method achieves a low detection limit of 7 ppb, closely approaching the World Health Organization’s maximum permissible limit. The simplicity of the procedure, coupled with the use of pure rhodamine B, distinguishes this approach from others relying on complex chemical procedures and derivatives of rhodamine B. The sensing mechanism involves the fluorescence quenching of rhodamine B due to complex formation with tetraiodomercurate. Noteworthy is the method’s selectivity, demonstrated by its resistance to interference from common ions present in water (e.g. Magnesium, calcium, sodium, and potassium), ensuring accurate detection of mercury ions. Extensive testing with tap water samples, considering potential interference, validates the robustness of the sensor, with recovery percentages of 99.25% and 109.2%. In summary, this study contributes a practical solution to the critical challenge of mercury detection in drinking water, addressing issues of sensitivity, selectivity, and on-site applicability. The proposed method holds promise for widespread implementation, enhancing efforts to safeguard public health and ensure the safety of water resources.","PeriodicalId":17976,"journal":{"name":"Laser Physics","volume":"351 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141513252","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

Investigations on the interaction of laser parameters for efficient microdrilling of NiTiV smart alloy system 镍钛钒智能合金系统高效微钻孔激光参数相互作用的研究

IF 1.2 4区物理与天体物理

Laser Physics Pub Date : 2024-06-19 DOI: 10.1088/1555-6611/ad552e

A Arun, S Santosh and K Rajkumar

{"title":"Investigations on the interaction of laser parameters for efficient microdrilling of NiTiV smart alloy system","authors":"A Arun, S Santosh and K Rajkumar","doi":"10.1088/1555-6611/ad552e","DOIUrl":"https://doi.org/10.1088/1555-6611/ad552e","url":null,"abstract":"Ni–Ti shape memory alloys (SMAs) are popular in current research due to their usefulness and mechanical properties. At different temperatures, Ni–Ti alloys transition from austenite to martensite. To restore high-temperature memory in nickel-titanium SMAs, vanadium (V) is added as an alloying element. For Ni–Ti-based SMAs, the fiber laser is one of the best machining procedures for bio-implants, actuators, and aircraft engine parts. Using a Box–Behnken design to experiment with laser power, nozzle distance, cutting speed, and frequency, this study examines fiber laser micro-drilled Ni50Ti48V2 SM alloy material removal and hole taper angle. By increasing power (P), frequency (F), and cutting speed (CS), Ni50Ti48V2 alloy material removal rate (MRR) increased by 75.79%. The hole taper angle (HTA) dropped 75.33% when cutting speed, laser power and frequency decreased. Lowering cutting speed and laser power increases micro-hole circularity and reduces HTA. Upon surface topographical inspection, debris and molten materials were found on the drilled surface. The flow of nitrogen gas caused materials to diffuse on the Ni50Ti48V2 alloy’s entry and exit surfaces, changing surface roughness. High parameters influence surface roughness, HTA, and circularity due to nitrogen gas flow. The material’s DSC and XRD tests confirmed its suitability for biomedical microhole production.","PeriodicalId":17976,"journal":{"name":"Laser Physics","volume":"47 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510224","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

Influence of electron–phonon interaction on linear and nonlinear magneto-optical absorption properties in monolayer transition metal dichalcogenides 电子-声子相互作用对单层过渡金属二卤化物线性和非线性磁光吸收特性的影响

IF 1.2 4区物理与天体物理

Laser Physics Pub Date : 2024-06-18 DOI: 10.1088/1555-6611/ad5531

Tran N Bich, Le Dinh and Huynh V Phuc

{"title":"Influence of electron–phonon interaction on linear and nonlinear magneto-optical absorption properties in monolayer transition metal dichalcogenides","authors":"Tran N Bich, Le Dinh and Huynh V Phuc","doi":"10.1088/1555-6611/ad5531","DOIUrl":"https://doi.org/10.1088/1555-6611/ad5531","url":null,"abstract":"In this study, we investigate the linear and non-linear magneto-optical properties of TMDC monolayer semiconductors MX2 (M = Mo/W, X = S/Se) in a perpendicular magnetic field by evaluating the magneto-optical absorption coefficients (MOACs) and the refractive index changes (RICs) subject to the influence of electron–phonon interaction (EPI). Our results are achieved by considering the influence of electron couplings with acoustic (AC) and optical (OP) phonons via the absorption (AB) and emission (EM) mechanisms. When compared to the neglected EPI case, the intensity of the linear MOAC and RIC increases about 2.6–4 times and 5.3–10.5 times, respectively. The absorption peaks exhibit the blue-shifts, with the largest blue-shift observed for the OP-EM phonon scatterings, followed by the AC phonons and the smallest for the OP-AB phonon scatterings. Meanwhile, the greatest contribution to MOAC and RIC comes from the OP-AB phonons, which is followed by that of the AC phonons and the OP-EM phonons, respectively. The MoX2 group is more significantly affected by the scattering mechanism compared to the WX2 one. Although the OP-EM phonons contribution for the MoX2 group is much smaller than that of the other two interaction mechanisms, it nevertheless produces a very noticeable blue-shift. Meanwhile, for the WX2 group, all three mechanisms erect comparable results. The biggest (smallest) value of the linear MOAC and RIC are both founded in MoSe2 (MoS2). Notably, the absolute values of the non-linear MOAC and RIC terms increase by tens to hundreds of times, leading to the total MOAC terms being negative, contrary to when EPI is not taken into account, while the characteristics of the non-linear RIC curves also undergo considerable changes. Among the four TMDC materials, MoX2 is more significantly affected by the EPI effect than WX2.","PeriodicalId":17976,"journal":{"name":"Laser Physics","volume":"35 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141530453","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

Preparation and investigation of high-performance flexible and transparent Ag/PDMS substrate with the bionic structure of cicada wings 具有蝉翼仿生结构的高性能柔性透明 Ag/PDMS 基底的制备与研究

IF 1.2 4区物理与天体物理

Laser Physics Pub Date : 2024-06-17 DOI: 10.1088/1555-6611/ad5530

Mengqi He, Jun Wang, Qiongya Luo, Xin Cai, Shuangyun Li, Meifeng Xu and Chaonan Wang

{"title":"Preparation and investigation of high-performance flexible and transparent Ag/PDMS substrate with the bionic structure of cicada wings","authors":"Mengqi He, Jun Wang, Qiongya Luo, Xin Cai, Shuangyun Li, Meifeng Xu and Chaonan Wang","doi":"10.1088/1555-6611/ad5530","DOIUrl":"https://doi.org/10.1088/1555-6611/ad5530","url":null,"abstract":"In this study, an efficient, homogeneous, flexible and transparent Ag/Polydimethylsiloxane (PDMS) substrate with an orderly three-dimensional nanopillar structure was proposed. Ag NPs were thermally deposited on the flexible bionic PDMS support obtained by a two-step replication of cicada wings. Scanning electron microscope images reveal when the deposition time was 50 min, Ag NPs of proper size densely covered the entire PDMS nanopillar surface in the Ag-50/PDMS substrate. Both the gaps between the Ag NPs and those between the nanopillars acted as efficient electric field amplifiers. The enhancement factor (EF) of the Ag-50/PDMS substrate was calculated to be 2.89 × 107 by using crystal violet as the probe molecule. The Ag-50/PDMS substrate also exhibited good uniformity and reproducibility with a relative standard deviation of 1.46% and 11.45% respectively. The detection capability of the proposed flexible and transparent Ag-50/PDMS substrate in practical applications was demonstrated by the in-situ detection of 0.1 ppm malachite green on fish surfaces, indicating its great potential in the field of food monitoring.","PeriodicalId":17976,"journal":{"name":"Laser Physics","volume":"40 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141510225","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

Complete analysis of hyperentangled Bell state in three degrees of freedom using Kerr effect and self-assisted mechanism 利用克尔效应和自辅助机制完整分析三个自由度的超纠缠贝尔态

IF 1.2 4区物理与天体物理

Laser Physics Pub Date : 2024-06-07 DOI: 10.1088/1555-6611/ad4eb9

Zhi Zeng

引用次数: 0