Journal of Russian Laser Research最新文献_第4页

Two-mode squeezing and entanglement in nondegenerate frequency up-conversion under first-order interaction hamiltonian 一阶相互作用哈密顿量下非简并频率上转换中的双模压缩和纠缠

IF 1 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2026-04-14 DOI: 10.1007/s10946-026-10286-5

Sourish Sarkar, Dilip Kumar Giri

{"title":"Two-mode squeezing and entanglement in nondegenerate frequency up-conversion under first-order interaction hamiltonian","authors":"Sourish Sarkar, Dilip Kumar Giri","doi":"10.1007/s10946-026-10286-5","DOIUrl":"10.1007/s10946-026-10286-5","url":null,"abstract":"<div><p>We theoretically investigate the generation of nonclassical features, namely two-mode squeezing, sub-Poissonian photon statistics, and bipartite entanglement in the nondegenerate frequency up-conversion (NFUC) process using a first-order interaction Hamiltonian under the short-time approximation. First-order photon statistics in the pump modes remain Poissonian under coherent excitation, reflecting the inability of linear interactions to mediate the simultaneous multi-photon processes required for up-conversion. In contrast, higher-order effects reveal pronounced nonclassical features. Both first- and second-order squeezing show a strong dependence on coherent field amplitudes, interaction strength, and relative phase. Asymmetric input configurations, especially those with enhanced signal-mode intensity, notably deepen squeezing and boost nonclassicality. Second-order squeezing proves more sensitive to phase and amplitude imbalances than first-order, serving as a precise indicator of higher-order quantum correlations. Entanglement is analysed using the Duan et al. inseparability criterion and the Hillery-Zubairy (HZ) criteria. The Duan criterion yields a value at the separability threshold under coherent excitation, indicating the presence of entanglement. HZ‑1 and HZ‑2 reliably detect bipartite entanglement under suitable conditions. HZ‑2 exhibits higher sensitivity at increased field strengths. Entanglement is confined to the pump modes, which are directly and symmetrically involved in the nonlinear interaction. The signal mode, as a collective outcome, does not display entanglement with either pump individually, highlighting the collective nature of quantum correlations in NFUC. These findings emphasise the importance of field asymmetry and higher-order dynamics in engineering entanglements, confirming the NFUC as a promising platform for tunable, nonclassical light generation in quantum optics and integrated photonics.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":"47 2","pages":"118 - 145"},"PeriodicalIF":1.0,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380285","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

Angle-controlled emission with low-divergence utilizing the microstructured edge-emitting laser for LIDAR 利用微结构边缘发射激光器实现激光雷达低发散角控制发射

IF 1 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2026-04-14 DOI: 10.1007/s10946-026-10291-8

Sidra Farouk, Yufei Wang, Mengqi Wang, Lei Yu, Yibo Yang, Yanmei Su, Jiaoqing Pan, Yejin Zhang

{"title":"Angle-controlled emission with low-divergence utilizing the microstructured edge-emitting laser for LIDAR","authors":"Sidra Farouk, Yufei Wang, Mengqi Wang, Lei Yu, Yibo Yang, Yanmei Su, Jiaoqing Pan, Yejin Zhang","doi":"10.1007/s10946-026-10291-8","DOIUrl":"10.1007/s10946-026-10291-8","url":null,"abstract":"<div><p>This paper presents a comprehensive design and simulation study of a LiDAR source based on microstructured edge-emitting laser (EEL), aiming at achieving directional beam steering suitable for integrated photonic sensing platforms. In this work, shallow slots are introduced which offered a well-balanced solution between efficient light extraction and high beam quality, making them optimal for integrated photonic applications requiring directional emission with low divergence. The results demonstrate the divergence angle improves significantly from 3.1° down to 0.87° as period increases indicating enhanced beam collimation and directionality. Meanwhile, a strong inverse correlation between grating period and emission angle has been observed, with large beam steering achieved across a wide angular range of 59°. The dependence of divergence angle on slot depth and their number is also analyzed. These results demonstrate that our design is a versatile and effective approach for integrated beam steering, that could lead to develop compact, high-precision optimized on-chip LiDAR solutions.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":"47 2","pages":"190 - 198"},"PeriodicalIF":1.0,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380287","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

Analysis and design of a 1-D photonic structure for rapid coronavirus screening in human blood 人血冠状病毒快速筛查的一维光子结构分析与设计

IF 1 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2026-04-14 DOI: 10.1007/s10946-026-10292-7

Gopinath Palai, Archana Rath, Chandra Sekhar Mishra, Rabinarayan Satpathy, Partha Sarkar

{"title":"Analysis and design of a 1-D photonic structure for rapid coronavirus screening in human blood","authors":"Gopinath Palai, Archana Rath, Chandra Sekhar Mishra, Rabinarayan Satpathy, Partha Sarkar","doi":"10.1007/s10946-026-10292-7","DOIUrl":"10.1007/s10946-026-10292-7","url":null,"abstract":"<div><p>Rapid and accurate detection of coronavirus-like pathogens in human blood remains a critical global healthcare challenge. In this work, a one-dimensional (1-D) photonic crystal structure is theoretically designed and analyzed for label-free, refractive-index-based virus screening. The proposed multilayer structure consists of alternating SiO<sub>2</sub> (300 nm) and TiO<sub>2</sub> (500 nm) layers with an embedded air cavity acting as the sensing region, operating at an incident wavelength of 412 nm. Six virus types such as H5N1, H5N2, H9N2, H4N6, FAdV, and Infectious Bronchitis Virus (IBV) which are investigated by introducing their corresponding complex refractive indices into the sample layer.</p><p>Key optical parameters including reflectance, absorbance, transmittance, sensitivity, resolution, noise level, quality factor, and measurement error are systematically evaluated. Sensitivity analysis reveals a pronounced enhancement for IBV, reaching approximately 0.0125 meV/RI, which is more than an order of magnitude higher than that of flu viruses such as H5N1 and H5N2 (≈10⁻<sup>4</sup> meV/RI). The corresponding resolution for IBV improves significantly to ~20 RIU/meV, compared to ~6700 RIU/meV for H5N2, indicating superior detection capability. The structure exhibits high quality factors, ranging from 1.36 × 10<sup>7</sup> to 1.63 × 10<sup>7</sup> for flu viruses and reaching 1.11 × 10<sup>8</sup> for IBV, confirming excellent optical confinement and minimal loss. Noise levels remain low (< 0.003) for most samples, with a distinct increase for IBV due to strong light-matter interaction. Measurement errors are consistently below 4%, validating high accuracy. These results demonstrate that the proposed 1‑D photonic structure is a promising platform for rapid and reliable coronavirus screening.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":"47 2","pages":"199 - 216"},"PeriodicalIF":1.0,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380284","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

Collinear degenerate spontaneous parametric down-conversion type-II scheme for measuring quantum efficiencies 测量量子效率的共线退化自发参数下转换ii型方案

IF 1 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2026-04-14 DOI: 10.1007/s10946-025-10280-3

A. Gavrliov, V. Meshcheriakov, S. Tsovianov, M. Lebedev, O. Misochko, G. Lesovik

引用次数: 0

Exploring Sharma-Mittal quantum discord in a two-qubit Heisenberg XXZ model with CM, DM, and KSEA interactions 在具有CM， DM和KSEA相互作用的两量子位Heisenberg XXZ模型中探索Sharma-Mittal量子不和谐

IF 1 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2026-04-14 DOI: 10.1007/s10946-025-10277-y

Rachid Ben Hammou, Abdelkebir El Aroui, Nabil Habiballah, Mostafa Nassik

引用次数: 0

Research on 0.9 µm Nd-doped mode-locked fiber laser with dispersion compensation based on reflective grating pairs 基于反射光栅对色散补偿的掺钕0.9 µm锁模光纤激光器研究

IF 1 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2026-04-14 DOI: 10.1007/s10946-026-10289-2

Shuaizhen Zhou, Yongming Yang, Qiong Zhang, Ming Li, Xiaohan Chen

引用次数: 0

Stable and various phase modulations of coherent beam combination in bidirectional transmission 双向传输中相干光束组合的稳定和各种相位调制

IF 1 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2026-04-14 DOI: 10.1007/s10946-026-10288-3

Fan Zou, Yingnan Peng, Qiqi Hu, Jiazhu Duan, Xiangjie Zhao, Dayong Zhang

引用次数: 0

Magnetic-field-controlled beam confinement and self-focusing of circularly polarized laser pulses in magnetized p-11B plasma: 2D PIC simulations 磁化p-11B等离子体中圆偏振激光脉冲的磁场控制束约束和自聚焦：二维PIC模拟

IF 1 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2026-04-14 DOI: 10.1007/s10946-026-10293-6

Fatemeh Shahi, Mehdi Sharifian, Soheil Khoshbinfar

{"title":"Magnetic-field-controlled beam confinement and self-focusing of circularly polarized laser pulses in magnetized p-11B plasma: 2D PIC simulations","authors":"Fatemeh Shahi, Mehdi Sharifian, Soheil Khoshbinfar","doi":"10.1007/s10946-026-10293-6","DOIUrl":"10.1007/s10946-026-10293-6","url":null,"abstract":"<div><p>The manipulation of laser-plasma coupling by external magnetic fields offers a practical route to improve energy localization in laser-driven fusion schemes. Here we present a combined analytical-computational study of circularly polarized Ti:sapphire laser pulses interacting with magnetized p‑11B plasma. An analytical model based on plasma-block acceleration is used alongside two-dimensional particle-in-cell (EPOCH-2D) simulations to investigate how externally applied axial magnetic fields alter beam propagation, self-focusing and particle confinement. Representative simulation cases at unmagnetized and magnetized conditions (including B<sub>0</sub> = 0, 10 and 20 T) show that magnetic confinement reduces transverse beam spread, enhances on-axis energy deposition, and mitigates transverse instabilities that otherwise broaden the beam. We quantify these trends through the minimum beam waist and the onset threshold for strong self-focusing, and discuss implications for tailoring laser drivers in aneutronic p‑11B schemes. The manuscript emphasizes reproducible simulation settings and provides practical metrics for experimental benchmarking and future 3D extensions.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":"47 3","pages":"217 - 233"},"PeriodicalIF":1.0,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380288","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

Nonlinear dynamics of a diode-pumped all-solid-state passively Q-switched Yb:YCOB laser 二极管泵浦全固态被动调q Yb:YCOB激光器的非线性动力学

IF 1 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2026-04-10 DOI: 10.1007/s10946-025-10281-2

Tao Xiong, Tao Deng, Xiaodong Lin, Xi Tang, Yingke Xie, Li Fan, Zhengmao Wu, Ziye Gao

{"title":"Nonlinear dynamics of a diode-pumped all-solid-state passively Q-switched Yb:YCOB laser","authors":"Tao Xiong, Tao Deng, Xiaodong Lin, Xi Tang, Yingke Xie, Li Fan, Zhengmao Wu, Ziye Gao","doi":"10.1007/s10946-025-10281-2","DOIUrl":"10.1007/s10946-025-10281-2","url":null,"abstract":"<div><p>We experimentally and theoretically investigate the nonlinear dynamical characteristics of a diode-pumped all-solid-state passively Q‑switched Yb:YCa<sub>4</sub>O(BO<sub>3</sub>)<sub>3</sub> (Yb:YCOB) laser by employing a semiconductor saturable absorber mirror (SESAM). The system’s nonlinear behavior is analyzed through time series, histograms, phase diagrams, and bifurcation diagram. Experimental results reveal that when the absorbed pump power is set at 2.65 W, 2.69 W, 2.76 W, and 2.89 W, respectively, the laser sequentially exhibits period-one (P1), period-two (P2), period-four (P4), and chaotic pulsation (CP) states. The corresponding numerical simulations confirm that under specific pump rates, the laser reproduces these P1, P2, P4, and CP states, in agreement with the experimental observations. The evolution of the pulse dynamics follows a typical P1→P2→P4→CP bifurcation sequence, indicating that the system mainly undergoes a period-doubling route to chaos. These findings demonstrate that the pump power (pump rate) plays a critical role in governing the nonlinear dynamical behavior of the all-solid-state passively Q‑switched Yb:YCOB laser.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":"47 1","pages":"49 - 58"},"PeriodicalIF":1.0,"publicationDate":"2026-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380456","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

Optimizing beam quality and gain in high-power ultrafast lasers with a zigzag-geometry Yb:InnoSlab booster amplifier 利用之字形几何Yb:InnoSlab升压放大器优化高功率超快激光器的光束质量和增益

IF 1 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2026-04-10 DOI: 10.1007/s10946-025-10260-7

Mohanna Najafi, Mahdi Shayganmanesh, M. Mahdi Majidof

{"title":"Optimizing beam quality and gain in high-power ultrafast lasers with a zigzag-geometry Yb:InnoSlab booster amplifier","authors":"Mohanna Najafi, Mahdi Shayganmanesh, M. Mahdi Majidof","doi":"10.1007/s10946-025-10260-7","DOIUrl":"10.1007/s10946-025-10260-7","url":null,"abstract":"<div><p>This paper introduces the InnoZag Booster Amplifier, a novel zigzag-geometry architecture designed based on Innoslab platform, to improve output power and mitigate the thermal effects in high-power ultrafast laser systems. Through a comprehensive numerical model, we demonstrate that the Yb:YAG-based Innozag design achieves a 24% enhancement in amplified power compared to conventional Innoslab amplifiers under identical conditions (1180 W pump power, 620 W seed power). The zigzag propagation path for both pump and laser beams provides two key advantages; enhanced power intensity in overlapping regions that improved energy extraction and superior thermal averaging that reduces wavefront distortion by 67% (200 nm vs. 600 nm variance in optical path differences in the pumped region). This work identifies Yb:YAG as the optimal gain medium for zigzag geometries, achieving 2.3 greater gain enhancement than Nd:YAG due to its quasi-three-level dynamics. With its compatible design and optimization possibilities, this system is a potential candidate for integration into existing amplifier chains in ultrafast laser systems.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":"47 1","pages":"1 - 9"},"PeriodicalIF":1.0,"publicationDate":"2026-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380458","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