Laser Physics Letters最新文献

Luminescence characteristics and near-infrared continuous laser operation of Er, Yb doped CNGS stoichiometric glasses 掺铒镱CNGS化学计量玻璃的发光特性及近红外连续激光操作

4区物理与天体物理

Laser Physics Letters Pub Date : 2026-01-01 DOI: 10.1088/1612-202x/ae2108

Tianhui Jiang, Y. Zhao, Yujin Chen, Guoliang Gong

{"title":"Luminescence characteristics and near-infrared continuous laser operation of Er, Yb doped CNGS stoichiometric glasses","authors":"Tianhui Jiang, Y. Zhao, Yujin Chen, Guoliang Gong","doi":"10.1088/1612-202x/ae2108","DOIUrl":"https://doi.org/10.1088/1612-202x/ae2108","url":null,"abstract":"Abstract In this paper, a series of Er 3+ doped CNGS glass–ceramics (GCs) and Er 3+ /Yb 3+ co-doped CNGS glasses were prepared by traditional melt quenching method and heat treatment process and their structure, optical and laser properties were characterized in detail. The results of DSC, XRD and transmittance curves showed that low crystallinity CNGS GC could be obtained by heat treatment at 870 °C for 2 h. The optimal doping concentrations of Er 3+ and Yb 3+ were 1.4% and 7%, respectively, and the upconversion luminescence and near-infrared luminescence intensities of the glass reached the strongest at this concentration. The analysis of fluorescence lifetime and Er 3+ –Yb 3+ energy transfer process (ET) showed that the agglomeration effect of Er 3+ and Yb 3+ in glass was significant. Finally, under 976 nm laser diode pumping, CNGS: 1.4%Er 3+ and 2.5%Yb 3+ glass successfully achieved continuous laser output in the 1.5 ∼ 1.6 μ m band, with a maximum output power of 60 mW and a slope efficiency of 2.1%. The results show that the Er 3+ and Yb 3+ co-doped CNGS glass has good laser performance, and shows a broad application prospect as a fiber laser gain material in the 1.5 ∼ 1.6 μ m band.","PeriodicalId":17940,"journal":{"name":"Laser Physics Letters","volume":"23 1","pages":"015801-015801"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147887707","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

Synergistic chemo-photodynamic therapy using Verteporfin and Paclitaxel for enhanced antitumor efficacy against BT-474 cells 使用维替波芬和紫杉醇的协同化学光动力疗法增强对BT-474细胞的抗肿瘤疗效

4区物理与天体物理

Laser Physics Letters Pub Date : 2025-05-01 DOI: 10.1088/1612-202x/adcfff

Aleena Zahid, Ahmat Khurshid, Saima Rehman, Bushra Aziz, Ribqa Akhtar, Shakeela Naz

{"title":"Synergistic chemo-photodynamic therapy using Verteporfin and Paclitaxel for enhanced antitumor efficacy against BT-474 cells","authors":"Aleena Zahid, Ahmat Khurshid, Saima Rehman, Bushra Aziz, Ribqa Akhtar, Shakeela Naz","doi":"10.1088/1612-202x/adcfff","DOIUrl":"https://doi.org/10.1088/1612-202x/adcfff","url":null,"abstract":"Abstract Breast cancer (BC) is the most diagnosed malignancy among women. Hormone receptor and HER2-positive BC is one of the major subtypes of BC that affect millions of lives globally. Chemotherapy is the first-line therapeutic approach for this subtype of BC but multiple side effects are associated with it. Photodynamic therapy is a light-based therapy that can be used as a complementary treatment in combination with chemotherapy to reduce its side effects and improve the therapeutic outcomes. In the present study, verteporfin a second-generation photosensitizer was used in combination with paclitaxel to investigate the effect of combination therapy on BC cells. The internalization of both drugs was recorded using UV–vis spectroscopy. BT-474 BC cells were treated with both drugs individually and in various combinational ratios (1:1,1:2, 2:1). Cytotoxic effects of both drugs were evaluated using an thiazolyl blue tetrazolium bromide assay. A reactive oxygen species (ROS) assay was performed to evaluate the underlying mechanism of cell death. The combination therapy showed a significant increase in ROS production which induces oxidative stress that causes cell death. Results indicate an enhanced therapeutic efficiency of drugs in combination therapy compared to mono-therapy against BC.","PeriodicalId":17940,"journal":{"name":"Laser Physics Letters","volume":"22 5","pages":"055602-055602"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147922052","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: 3

Analysis of the entanglement degree between GHZ and W states under continuous measurement 连续测量下GHZ态与W态纠缠度分析

4区物理与天体物理

Laser Physics Letters Pub Date : 2025-03-14 DOI: 10.1088/1612-202x/adbd20

Zhixiang Sun, Zi-Han Qi, Peng Xu

引用次数: 0

Vectorial manipulation of twisted vector vortex optical fields in strongly nonlocal nonlinear media 强非局部非线性介质中扭曲矢量涡旋光场的矢量操纵

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-09-16 DOI: 10.1088/1612-202x/ad7245

Cai-xia Liu, Xiao-bo Hu, Feng-min Wu and Rui-Pin Chen

{"title":"Vectorial manipulation of twisted vector vortex optical fields in strongly nonlocal nonlinear media","authors":"Cai-xia Liu, Xiao-bo Hu, Feng-min Wu and Rui-Pin Chen","doi":"10.1088/1612-202x/ad7245","DOIUrl":"https://doi.org/10.1088/1612-202x/ad7245","url":null,"abstract":"We theoretically investigate the propagation properties and vectorial manipulation of twisted vector vortex beams (TVVB) with a cross-phase in a strongly nonlocal nonlinear medium (SNNM). The root mean square beam-width (RMS-BW) and the critical power required to retain the invariant RMS-BM of the TVVB in an SNNM are derived using the coupled nonlocal nonlinear Schrödinger equation. Numerical calculations reveal novel characteristics of the evolution of the state of polarization (SoP) and the optical intensity distributions during the TVVB propagating in an SNNM. It is found that mode conversions between a Laguerre Gaussian and a Hermite Gaussian mode take place during propagation in an SNNM, and the topological charge of the TVVB can be accurately measured by observing the interference intensity structure in the cross-section. Manipulation of the beam shape, SoP, and rotation of the TVVB is achieved by controlling factors such as the initial power, twisting coefficient, initial beam-width, and topological charge. These findings hold promise for applications in optical micro-manipulation, optical communication, and material processing.","PeriodicalId":17940,"journal":{"name":"Laser Physics Letters","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255233","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

Quantum metamaterials with complete graph interfaces in the ultrastrong coupling regime 超强耦合机制下具有完整图形界面的量子超材料

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-09-15 DOI: 10.1088/1612-202x/ad6e6c

P V Zacharenko, D V Tsarev, M M Nikitina and A P Alodjants

引用次数: 0

Picosecond laser with Yb-doped tapered low birefringent double clad fiber 使用掺镱锥形低双折射双包层光纤的皮秒激光器

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-09-15 DOI: 10.1088/1612-202x/ad72d7

A S Kozlov, A V Mayzel, A V Medvedev, E A Motorin, E A Savelyev, V S Temkina, V N Filippov and Y K Chamorovskiy

引用次数: 0

A quantum identity authentication protocol based on continuous-variable entangled light fields 基于连续可变纠缠光场的量子身份验证协议

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-09-15 DOI: 10.1088/1612-202x/ad771d

Zhipeng Chen, Fengwei Yao and Xiao-Qi Xiao

引用次数: 0

Classical driving-assisted quantum evolution speedup 经典驱动辅助量子进化加速

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-09-15 DOI: 10.1088/1612-202x/ad771b

Hu-ping Peng, Zhi-guang Tan, Hai-jie Peng and You-neng Guo

引用次数: 0

Visualizing the quantum phase transition by using quantum steering ellipsoids in the anisotropic spin XY model 在各向异性自旋 XY 模型中利用量子转向椭球使量子相变可视化

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-09-15 DOI: 10.1088/1612-202x/ad771e

Cheng-Cheng Liu, Ze-Wei Sun, Xiao-Gang Fan, Zhi-Yong Ding, Ze-Qing Guo, Ming-Ming Du, Juan He, Tao Wu and Liu Ye

{"title":"Visualizing the quantum phase transition by using quantum steering ellipsoids in the anisotropic spin XY model","authors":"Cheng-Cheng Liu, Ze-Wei Sun, Xiao-Gang Fan, Zhi-Yong Ding, Ze-Qing Guo, Ming-Ming Du, Juan He, Tao Wu and Liu Ye","doi":"10.1088/1612-202x/ad771e","DOIUrl":"https://doi.org/10.1088/1612-202x/ad771e","url":null,"abstract":"Quantum steering ellipsoids (QSEs) can serve as a useful geometric tool for describing both the strength and type of quantum correlations between two subsystems of a compound system. By employing the quantum renormalization-group method, we focus on investigating the relation between QSEs and the quantum phase transition (QPT) in the anisotropic spin XY model. The results indicate that the QPT is well visualized in terms of the shape of the QSE, i.e. it is an oblate spheroid in the spin-fluid phase and a needle in the Néel phase. Meanwhile, after several iterations of renormalization, the QSE volume V undergoes a contraction mutation, and can develop two saturated values at the critical points associated with the QPT, which correspond to two different phases: the spin-fluid phase and the Néel phase. We also find that the QSE is closely associated with quantum entanglement in the model, i.e. the volume of the QSE between blocks is more than 4π/81 when the system is in the spin-fluid phase, which indicates that the system must be entangled. Furthermore, the nonanalytic and scaling behaviors of the volume of the QSE have been analyzed in detail, and the results convince us that the quantum critical properties are connected with the behavior of the QSE.","PeriodicalId":17940,"journal":{"name":"Laser Physics Letters","volume":"117 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255239","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

Optimized generalized monogamy relations and upper bounds for N-qubit systems N 量子比特系统的优化广义一性关系和上限

IF 1.7 4区物理与天体物理

Laser Physics Letters Pub Date : 2024-09-11 DOI: 10.1088/1612-202x/ad771c

Zhong-Xi Shen, Dong-Ping Xuan, Wen Zhou, Zhi-Xi Wang and Shao-Ming Fei

引用次数: 0