Applied Physics B最新文献_第2页

The Lohmann Holography Award: honoring scientific legacy and inspiring the future of holography 罗曼全息摄影奖：表彰科学遗产，激励全息摄影的未来

IF 1.8 3区物理与天体物理

Applied Physics B Pub Date : 2026-09-21 DOI: 10.1007/s00340-026-08720-2

Vijayakumar Anand, Jacob I. Mackenzie

引用次数: 0

Propagational quasi-Hamiltonian functional and stability analysis of finite Airy-Gaussian beams in uniform dense plasma 均匀致密等离子体中有限Airy-Gaussian光束的准哈密顿泛函及稳定性分析

IF 1.8 3区物理与天体物理

Applied Physics B Pub Date : 2026-09-04 DOI: 10.1007/s00340-026-08710-4

V. S. Pawar, S. R. Kokare, M. V. Takale

{"title":"Propagational quasi-Hamiltonian functional and stability analysis of finite Airy-Gaussian beams in uniform dense plasma","authors":"V. S. Pawar, S. R. Kokare, M. V. Takale","doi":"10.1007/s00340-026-08710-4","DOIUrl":"10.1007/s00340-026-08710-4","url":null,"abstract":"<div><p>This paper investigates the nonlinear propagation dynamics of finite Airy-Gaussian (AiG) laser beams in a uniform dense collisionless plasma using the Wentzel-Kramers-Brillouin (WKB) and paraxial ray approximations. Instead of treating the coupled beam width parameter differential equations (BWPDEs) solely as evolution equations, the beam propagation is analysed within an equivalent classical dynamical framework. The beam width evolution is reformulated as a two-dimensional dynamical system governed by propagational quasi-Hamiltonian functional and an effective pseudo-potential. An energy-like propagational quasi-Hamiltonian functional is derived characterizes the nonlinear beam dynamics. The evolution of the system is further interpreted through kinetic energy-like and effective pseudo-potential terms. The analysis reveals that, the quasi-Hamiltonian functional governs the self-trapping, oscillatory self-focusing and defocusing behavior of the beam. Different propagation regimes are identified according to the evolution of the quasi-Hamiltonian functional; near-zero values correspond to self-trapping, bounded oscillations indicate stable propagation and divergent behaviour signifies beam defocusing. The condition for self-trapping, self-focusing, defocusing and beam stability are further examined through a Hessian matrix analysis. The proposed framework provides deeper physical insights into the nonlinear dynamics of finite AiG beams and extends the conventional beam width parameter approach by revealing the underlying dynamical structure of beam propagation in plasma.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"132 10","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00340-026-08710-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148926318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A comprehensive review on evolution of optical information security techniques 光信息安全技术发展综述

IF 1.8 3区物理与天体物理

Applied Physics B Pub Date : 2026-09-02 DOI: 10.1007/s00340-026-08713-1

Raman Yadav, Harsh Vardhan, Aswathi K Sivarajan, Praveen Kumar, Sakshi Choudhary, Phool Singh, Gangi Reddy Salla, Sachin, Ravi Kumar

{"title":"A comprehensive review on evolution of optical information security techniques","authors":"Raman Yadav, Harsh Vardhan, Aswathi K Sivarajan, Praveen Kumar, Sakshi Choudhary, Phool Singh, Gangi Reddy Salla,  Sachin, Ravi Kumar","doi":"10.1007/s00340-026-08713-1","DOIUrl":"10.1007/s00340-026-08713-1","url":null,"abstract":"<div><p>With the exponential growth of digital communication channels, the transmission and storage of high-dimensional multimedia data, including images and videos, have become crucial to modern information systems. The areas like defense, healthcare and banking utilize the modern communication channels very often to share information. Thus, ensuring the confidentiality, integrity, and authenticity of sensitive visual information has become a critical challenge. Although there are various conventional data security algorithms that exist, they often encounter limitations in handling large-scale image data due to high computational complexity and slow processing speed. Optical cryptosystems have emerged as a promising alternative owing to their inherent parallelism, multidimensional processing capability, large key space, and high-speed implementation. In this review, recent advancements in optical cryptosystems beyond classical DRPE scheme are summarized. Particularly, we examine the asymmetric optical cryptosystems based on PTFT, QZ decomposition, QZ synthesis, SVD, GSVD, interference, and computer-generated holography. Moreover, this review also discussed the emerging approaches of optical data security using structured light beams such as vector vortex beams. Finally, the review covered various techniques to test the vulnerabilities of optical cryptosystems such as plaintext and modified plaintext attacks, AI based cryptographic attacks, and iterative attacks designed for asymmetric cryptosystems. The objective of this review article is to serve as a reference text for readers from a variety of research backgrounds interested in the domain of optical information security.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"132 10","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00340-026-08713-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148871710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Laser isotope separation of Gd-152 and Gd-160 Gd-152和Gd-160的激光同位素分离

IF 1.8 3区物理与天体物理

Applied Physics B Pub Date : 2026-08-31 DOI: 10.1007/s00340-026-08712-2

Kevin C. Robben, Mark D. Rotter, Christopher A. Haynam, Michael A. Johnson, Christopher F. Carson, Brett H. Isselhardt

{"title":"Laser isotope separation of Gd-152 and Gd-160","authors":"Kevin C. Robben, Mark D. Rotter, Christopher A. Haynam, Michael A. Johnson, Christopher F. Carson, Brett H. Isselhardt","doi":"10.1007/s00340-026-08712-2","DOIUrl":"10.1007/s00340-026-08712-2","url":null,"abstract":"<div><p>Atomic vapor laser isotope separation (AVLIS) of gadolinium has historically emphasized enrichment of the odd isotopes, with external magnetic fields treated primarily as a source of selectivity degradation. Here we revisit polarization-selective photoionization of gadolinium with a different objective: to exploit controlled B-field–induced mixing as a design parameter for enhancing the photoionization of even isotopes. Using density-matrix simulations of a J = 2 → 2 → 1 → 0 excitation ladder, we examine the combined effects of magnetic-field orientation and amplitude, laser polarization, and laser fluence on the photoionization efficiency of <sup>160</sup>Gd and <sup>152</sup>Gd. We identify operating regimes in which modest magnetic fields (≈10–20 G), appropriately oriented relative to the laser fields, substantially increase even-isotope photoionization probability without catastrophic loss of selectivity. When translated into separation metrics, these conditions yield high theoretical product assays and isotopic cuts approaching or exceeding 60–70% in a single pass, representing approximately a two-fold improvement in isotopic cut relative to zero-field operation. The results demonstrate that magnetic fields need not be treated solely as a limitation in polarization-selective AVLIS but can instead be leveraged to improve throughput for even-isotope enrichment, particularly for rare isotopes such as <sup>152</sup>Gd, and suggest that AVLIS can be competitive with electromagnetic isotope separation for the production of even gadolinium isotopes.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"132 9","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00340-026-08712-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A comparative study of water-jet guided laser and dry nanosecond laser processing of Cf/SiC composites 水射流激光与干式纳秒激光加工Cf/SiC复合材料的对比研究

IF 1.8 3区物理与天体物理

Applied Physics B Pub Date : 2026-08-24 DOI: 10.1007/s00340-026-08709-x

Dianzheng Wang, Yulu Zhang, Zhenghao Du, Ye Dai, Shengzhi Sun

{"title":"A comparative study of water-jet guided laser and dry nanosecond laser processing of Cf/SiC composites","authors":"Dianzheng Wang, Yulu Zhang, Zhenghao Du, Ye Dai, Shengzhi Sun","doi":"10.1007/s00340-026-08709-x","DOIUrl":"10.1007/s00340-026-08709-x","url":null,"abstract":"<div><p>Water-jet guided laser (WJGL) processing provides an effective technology for the precision machining of ceramic matrix composites (CMCs), particularly for high-aspect-ratio microhole drilling, owing to its advantages in energy confinement, cooling, and debris removal. In this study, WJGL processing and dry nanosecond laser processing were systematically compared for the drilling of C<sub>f</sub>/SiC composites under comparable laser conditions. The results show that the introduction of water significantly modifies the laser-material interaction by providing cooling and debris removal, thereby reducing thermal accumulation and subsequent oxidation. By optimization of water pressure, microholes with a minimum diameter of 200 μm and a maximum aspect ratio of 15:1 were successfully fabricated. Compared with dry nanosecond laser processing, WJGL achieved a higher material removal rate while markedly suppressing thermal oxidation at the cross section, thus preserving the integrity of both the SiC matrix and the BN interface. Consequently, the WJGL-processed C<sub>f</sub>/SiC composites show significantly improved wear resistance compared to the dry nanosecond laser-processed ones due to the reduced surface damage.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"132 9","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00340-026-08709-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dictionary Learning-Based Multi-Beam Digital Holographic Microscopy 基于字典学习的多光束数字全息显微术

IF 1.8 3区物理与天体物理

Applied Physics B Pub Date : 2026-08-18 DOI: 10.1007/s00340-026-08708-y

Kuruguntla Lakshmi, Vineela Chandra Dodda, Manoj Kumar, Ravi Kumar, Inbarasan Muniraj, Injune Yeo

{"title":"Dictionary Learning-Based Multi-Beam Digital Holographic Microscopy","authors":"Kuruguntla Lakshmi, Vineela Chandra Dodda, Manoj Kumar, Ravi Kumar, Inbarasan Muniraj, Injune Yeo","doi":"10.1007/s00340-026-08708-y","DOIUrl":"10.1007/s00340-026-08708-y","url":null,"abstract":"<div><p>Digital holographic microscopy (DHM) involves computationally demanding operations such as numerical wave propagation, phase retrieval, and three-dimensional (3D) reconstruction, which rely heavily on large-scale matrix computations. As spatial resolution and sampling density increase, the associated computational burden grows substantially, often necessitating optimized signal-processing strategies to enable real-time and high-fidelity reconstruction. To address this, we propose a sparse reconstruction method based on adaptive dictionary learning (DL) named as Sequential Generalized K-means (SGK) is integrated into DHM. In the proposed method, input hologram is divided into patches, and each patch is represented as linear combination of sparse dictionary atoms. Each atom in dictionary is updated sequentially by averaging the training patches associated with its fixed sparse coefficients. Unlike K-SVD, proposed method avoids the expensive singular value decomposition (SVD) for dictionary update thereby minimizes the computation time and improves the hologram reconstruction accuracy. To further enhance reconstruction quality, optimum choice of key parameters such as patch size, dictionary size, and sparsity level is essential. Experimental results demonstrate that the proposed SGK-based sparse reconstruction achieves high-fidelity reconstructions and faster convergence than conventional dictionary-learning approaches, highlighting its suitability for real-time microscopic imaging applications.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"132 9","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00340-026-08708-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multiscale carrier-envelope phase characterization of 2-µm pulses delivered by a 200-kHz optical parametric amplifier 由200 khz光参量放大器输出的2µm脉冲的多尺度载波包络相位特性

IF 1.8 3区物理与天体物理

Applied Physics B Pub Date : 2026-08-01 DOI: 10.1007/s00340-026-08699-w

Katrin Meier, Arvid Klösgen, Kerstin Harland, Lina Hansen, Lars Barnekow, Chen Guo, Caroline Juliano, Jin Niu, Cord L. Arnold, Jan Vogelsang

{"title":"Multiscale carrier-envelope phase characterization of 2-µm pulses delivered by a 200-kHz optical parametric amplifier","authors":"Katrin Meier, Arvid Klösgen, Kerstin Harland, Lina Hansen, Lars Barnekow, Chen Guo, Caroline Juliano, Jin Niu, Cord L. Arnold, Jan Vogelsang","doi":"10.1007/s00340-026-08699-w","DOIUrl":"10.1007/s00340-026-08699-w","url":null,"abstract":"<div><p>Light fields with a central wavelength of 2 µm are very well suited for strong-field-driven charge carrier control: Their photon energy lies far below the band gap of many materials, while their oscillation period remains significantly shorter than the coherence time of charge carrier oscillations. The resulting potential for field-driven charge carrier control is contingent on the reproducibility of the field structure of such ultrashort laser pulses. Here, we present a compact 200-kHz laser system that delivers ultrashort pulses with a duration of less than 20 fs in the spectral range around 2 µm and with a pulse energy of 25 µJ. The electric field structure of the 2-µm pulses is characterized in detail. In particular, the carrier-envelope phase (CEP) is measured over a wide range of timescales, from microseconds to hours. Passive stabilization due to difference frequency generation results in a root mean square value of carrier-envelope phase noise of less than 70 mrad over all measured time scales. The applicability of the pulses is demonstrated by measuring CEP-dependent high-order harmonic spectra with energies of up to 160 eV.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"132 8","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00340-026-08699-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148628493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Physics-guided stepwise tomography framework for high-precision reconstruction of temperature and concentration 用于温度和浓度高精度重建的物理引导逐步层析成像框架

IF 1.8 3区物理与天体物理

Applied Physics B Pub Date : 2026-07-28 DOI: 10.1007/s00340-026-08707-z

Yaojie Jia, Dongdong Pang, Jiarui Lei, Peng Liu, Xin Zhou

{"title":"Physics-guided stepwise tomography framework for high-precision reconstruction of temperature and concentration","authors":"Yaojie Jia, Dongdong Pang, Jiarui Lei, Peng Liu, Xin Zhou","doi":"10.1007/s00340-026-08707-z","DOIUrl":"10.1007/s00340-026-08707-z","url":null,"abstract":"<div><p>This paper presents a physics-guided stepwise tomography framework that decouples the ill-posed tomography of temperature and concentration into three measurement- and prior-guided stages. By sequentially embedding two-line thermometry, projection matrix, and structural similarity, the framework first reconstructs a preliminary temperature field via a physics-data collaborative network, then employs it as a structural prior to guide iterative concentration inversion, and finally restores spatial details through a joint superresolution network, achieving high-fidelity reconstruction under a sparse optical layout with 40 optical paths and 2 absorption lines. Comprehensive validation in three cases supports improved robustness in the tested cases. In Case A, an in-distribution LES test dataset achieved dataset-averaged temperature/concentration mean relative errors (<span>(E_T/E_X)</span>) of 1.35%/2.51% and temperature/concentration structural similarity indices (<span>(SSIM_T/SSIM_X)</span>) of 0.991/0.989. In Case B, an out-of-distribution LES flame with modified inlet conditions showed section-dependent performance, with representative noise-free longitudinal sections giving <span>(E_T=4.54%-7.67%)</span>, <span>(E_X=5.55%-14.11%)</span>, <span>(SSIM_T=0.742-0.974)</span>, and <span>(SSIM_X=0.763-0.965)</span>. In Case C, an experimentally derived axisymmetric flame case constructed from Sandia Flame D measurements further showed that the main jet, reaction-zone, and diffusion-region structures can still be captured; representative cross-sections achieved <span>(E_T<5%)</span>, <span>(E_X<8%)</span>, <span>(SSIM_T>0.98)</span>, and <span>(SSIM_X>0.96)</span>. This strategy provides a promising route toward real-time combustion diagnostics in geometrically complex environments with restricted optical access.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"132 8","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00340-026-08707-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148614401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction: Modulation of optical properties of adipose tissue in diabetes mellitus associated with its glycation and hydration 校正：糖尿病中与糖基化和水合作用相关的脂肪组织光学特性的调节

IF 1.8 3区物理与天体物理

Applied Physics B Pub Date : 2026-07-21 DOI: 10.1007/s00340-026-08705-1

Irina Yanina, Kirill Berezin, Daria Tuchina, Natalia Shushunova, Ekaterina Stepanovich, Alla Bucharskaya, Artyom Mylnikov, Nikita Navolokin, Valery Tuchin

引用次数: 0

High-temperature spectrally resolved NO laser-induced fluorescence for temperature and pressure measurement using a rapidly tunable UV laser 高温光谱分辨NO激光诱导荧光温度和压力测量使用快速可调谐紫外激光

IF 1.8 3区物理与天体物理

Applied Physics B Pub Date : 2026-07-21 DOI: 10.1007/s00340-026-08706-0

Spencer C. Barnes, Sean Clees, Joshua A. Vandervort, Christopher L. Strand, Ronald K. Hanson

引用次数: 0