Applied Physics B最新文献_第9页

Generation of wavelength-tunable microjoule-level femtosecond pulse using dispersion-managed multi-pass cells 利用色散管理的多通单元产生波长可调谐的微焦耳级飞秒脉冲

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2025-06-03 DOI: 10.1007/s00340-025-08489-w

Junchang Su, Yutian Luo, Zhongchao Li, Guoqin Chang, Wei Liu

引用次数: 0

Momentum distribution of the current-carrying states from ring molecules H3+4in ultraviolent laser fields 环分子H3+4在超强激光场中载流态的动量分布

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2025-06-03 DOI: 10.1007/s00340-025-08479-y

Xinyu Hao, Shujuan Yan, Ying Guo, Siqi Zhang, GenLiang Li, XiangYi Luo, Jing Guo

{"title":"Momentum distribution of the current-carrying states from ring molecules H3+4in ultraviolent laser fields","authors":"Xinyu Hao, Shujuan Yan, Ying Guo, Siqi Zhang, GenLiang Li, XiangYi Luo, Jing Guo","doi":"10.1007/s00340-025-08479-y","DOIUrl":"10.1007/s00340-025-08479-y","url":null,"abstract":"<div><p>We investigate the momentum distributions of <span>({textrm{H}}_{4}^{3+})</span> molecular ions by numerically solving the two-dimensional (2D) time-dependent Schrödinger equation (TDSE). For <span>({textrm{H}}_{4}^{3+})</span>, the ground state <span>(A')</span>, current-carrying states <span>({textrm{E}}^{+})</span> and <span>({textrm{E}}^{-})</span> are considered. The results show that the photoelectron momentum distributions (PMDs) of different initial states are all caused by multi-center interference in the single-photon ionization process. The number of lobes of PMDs is also explained by the ultra-fast ionization model. However, in the right-rotating (<span>(+)</span>) circularly polarized (CP) laser field, the intensity of PMDs with <span>({textrm{E}}^{+})</span> state is significantly higher than that with <span>({textrm{E}}^{-})</span> state, which can be attributed to the fact that the laser pulses with different rotations can produce selective state-state transitions. In addition, the difference in the intensity of PMDs in the current-carrying states <span>({textrm{E}}^{+})</span> and <span>({textrm{E}}^{-})</span> can be well explained by the time evolution of the electron wave packet. These findings provide new insight for future studies in the dynamics of current-carrying states in ring molecules.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 6","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Interaction of a two-color laser with aluminum nitride crystal leading to THz radiation 双色激光与氮化铝晶体的相互作用导致太赫兹辐射

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2025-05-26 DOI: 10.1007/s00340-025-08484-1

A. R. Soltany-Sadrabadi, F. M. Aghamir

{"title":"Interaction of a two-color laser with aluminum nitride crystal leading to THz radiation","authors":"A. R. Soltany-Sadrabadi, F. M. Aghamir","doi":"10.1007/s00340-025-08484-1","DOIUrl":"10.1007/s00340-025-08484-1","url":null,"abstract":"<div><p>Generation of THz waves from interaction of a two-color laser with aluminum nitride crystal has been investigated theoretically. The focus of study has been directed towards exploring the potential of nonlinear optical difference frequency generation for emission in the THz spectrum. Leveraging Sellmeier's dispersion formula, an in-depth analysis of refractive index behavior was conducted. The analysis revealed the conditions for phase matching within the range of 0.5–12 THz for 1064 nm laser wavelength at room temperature. The maximum walk-off angle was verified 0.5°, suitable for co-linear wave interactions. The Manley–Row equations were applied, showcasing energy conversion efficiency in the order of <span>({10}^{-3})</span> in an ideal lossless medium and <span>({10}^{-5})</span> when accounting for losses. The quasi-phase matching (QPM) technique was utilized to enhance the quality of analysis and establishing an optimal periodicity wavelength. This adjustment facilitated tuning within the range 54–68 THz for 1064 nm by manipulating the temperature. The saturated conversion efficiency was around 13%, while with the effects of losses considered, the efficiency dropped to values ranging from 3 to 7%, with a peak value around 9%.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 6","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00340-025-08484-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144135468","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

~ 350 W near-diffraction-limited Nd: YVO4 laser amplifier with thermal spherical aberration self-compensation ~ 350w近衍射受限Nd: YVO4激光放大器，热球差自补偿

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2025-05-21 DOI: 10.1007/s00340-025-08480-5

Yang Liu, Xiaoyan Qiu, Bin Liu, Yuhong Shen, Liying Chen, Junyang Dong, Yiwen Jin, Yichao Peng, Jian Chen, Bingfeng Ju, Chong Liu

引用次数: 0

Enhancing photons transport via space-dependent hopping in zig–zag lattice: modulated wave gain 通过之字形晶格中的空间依赖跳变增强光子传输：调制波增益

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2025-05-12 DOI: 10.1007/s00340-025-08447-6

Hamdy I. Abdel-Gawad

{"title":"Enhancing photons transport via space-dependent hopping in zig–zag lattice: modulated wave gain","authors":"Hamdy I. Abdel-Gawad","doi":"10.1007/s00340-025-08447-6","DOIUrl":"10.1007/s00340-025-08447-6","url":null,"abstract":"<div><p>Recent studies have extensively explored fixed hopping in zig–zag lattices. However, material heating effects can induce inhomogeneity, significantly altering the lattice’s shape and behavior. Motivated by this, we introduce a novel approach by constructing both discrete and continuum models for a zig–zag lattice with space-dependent hopping between two-nearest-neighbor interactions. The primary objective of this study is to investigate the impact of inhomogeneity on photon transport characteristics. To achieve this, we derive exact solutions for the inhomogeneous continuum model using the extended unified method. Our findings reveal key insights, including a significant enhancement in photon transport within lattices featuring variable hopping. Furthermore, we explore the influence of this property on nonlinear optical wave structures, uncovering various topological solitons such as clustered zig–zag solitons near the origin, dark solitons, and spiky tree-like structures with leaf-like features. Additionally, we examine modulated wave-amplitude gain, providing a deeper understanding of and control over nonlinear optical wave behavior.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 6","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Convolutional neural network for coded metasurface inverse design 卷积神经网络在编码超曲面逆设计中的应用

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2025-05-10 DOI: 10.1007/s00340-025-08475-2

Yong Tao, Xudong Qiu, Fuhai Liu, Jianfeng Xu, Peng Xu, Yanling Li, Manna Gu, Ying Tian

引用次数: 0

Temperature-insensitive U-shaped liquid level sensor based on single-mode fiber cascaded with double spheres 基于双球级联单模光纤的温度不敏感u型液位传感器

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2025-05-10 DOI: 10.1007/s00340-025-08478-z

Muhua Wang, Zhengrong Tong, Weihua Zhang, Danyang Liu, Yixi Liu, Xue Wang

引用次数: 0

Optimization of a plasmonic biosensor using BSA layer for colorectal cancer detection under optimum radiation damping 基于BSA层的等离子体生物传感器在最佳辐射阻尼下的结肠直肠癌检测优化

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2025-05-10 DOI: 10.1007/s00340-025-08483-2

Sudhir Shukla, D. K. Dwivedi, Pooja Lohia

{"title":"Optimization of a plasmonic biosensor using BSA layer for colorectal cancer detection under optimum radiation damping","authors":"Sudhir Shukla, D. K. Dwivedi, Pooja Lohia","doi":"10.1007/s00340-025-08483-2","DOIUrl":"10.1007/s00340-025-08483-2","url":null,"abstract":"<div><p>A theoretical and simulation based plasmonic sensor is proposed for the detection of colorectal cancer in the near infrared (NIR) region. Plasmonic metal made of silver (Ag) is considered at the top of a calcium fluoride (CaF2) prism. The top layer is bovine serum albumin (BSA) which will act as linker for colorectal tissues. The goal of the simulation is to maximize radiative damping and attain optimum radiation damping (ORD) conditions using Ag–KTaO<sub>3</sub>–BSA heterojunction to obtain highest possible figure of merit (FOM). The optimization process involves the variation of Ag and KTaO<sub>3</sub> layer thicknesses (i.e. d<sub>M</sub> and d<sub>A</sub> respectively) as well as the operating wavelength (λ) in the NIR (nearby 1000 nm) using 2D simulation approach. After concurrent variation of thicknesses, a high value of FOM about 6551 RIU<sup>− 1</sup> at d<sub>1</sub> = 47.7 nm, d<sub>2</sub> = 2.4 nm and λ = 1006.8 nm has been obtained. This can be treated as a condition of ORD. Power loss ratio (PLR), electric field enhancement factor (FEF) and Rayleigh scattering factor (RSF) are calculated to be 3.134, 1.0792 and 0.97 μm<sup>− 4</sup> respectively. Overall sensor performance, examined by combined performance factor (CPF) for the proposed sensor is 22684.02 µm<sup>4</sup>/RIU.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 6","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143930127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Optimisation of pockels effect in poled amorphous waveguides for efficient electro-optic modulation 极化非晶波导中高效电光调制的口袋效应优化

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2025-05-09 DOI: 10.1007/s00340-025-08477-0

Sirawit Boonsit, Vasileios Mourgelas, Lara Karam, Milos Nedeljkovic, Nadege Courjal, Marc Dussauze, Ganapathy Senthil Murugan

{"title":"Optimisation of pockels effect in poled amorphous waveguides for efficient electro-optic modulation","authors":"Sirawit Boonsit, Vasileios Mourgelas, Lara Karam, Milos Nedeljkovic, Nadege Courjal, Marc Dussauze, Ganapathy Senthil Murugan","doi":"10.1007/s00340-025-08477-0","DOIUrl":"10.1007/s00340-025-08477-0","url":null,"abstract":"<div><p>The induced second-order optical nonlinearity (SONL) in amorphous materials, such as silica glasses, has been extensively studied but remains significantly weaker compared to crystalline materials. Recent advancements demonstrated a remarkable induced <span>(chi_{xxx}^{left( 2 right)})</span> value of 29 pm/V in amorphous sodo-niobate thin films (Na<sub>2</sub>O:Nb<sub>2</sub>O<sub>5</sub>) using a patterned thermal poling technique. In contrast to standard electro-optic single-crystalline materials, such as lithium niobate, thermally poled amorphous thin films exhibit a unique spatial distribution of <span>(chi^{left( 2 right)})</span> nonlinearity, due to the structured electrodes poling process. This necessitates an advanced modelling approach tailored to poled amorphous materials. This study presents a theoretical analysis of the sodo-niobate dielectric permittivity tensor, then applies it to the design of electro-optic modulators using numerical simulations, to identify the optimal device geometry, device orientation, fabrication process, and poling configuration. Experimental parameters were included in the simulations to ensure design compatibility with fabrication. The optimized device configuration achieved a voltage-length product (V<sub>π</sub>L) of 3.87 V.cm. These designs establish poled sodo-niobate waveguides on SiO<sub>2</sub> as a promising amorphous platform with a significant induced SONL response and practical fabrication potential for future electro-optic modulator applications. </p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 6","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00340-025-08477-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143930123","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

Spatially-resolved atomic oxygen absorption and emission measurements in the Hypersonic Materials Environmental Test System 高超声速材料环境试验系统中空间分辨原子氧吸收和发射测量

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2025-05-09 DOI: 10.1007/s00340-025-08476-1

Tal Schwartz, Scott C. Splinter, Neil S. Rodrigues, Paul M. Danehy, Killian E. Samuels, Christopher B. Kostyk, Ronald K. Hanson

{"title":"Spatially-resolved atomic oxygen absorption and emission measurements in the Hypersonic Materials Environmental Test System","authors":"Tal Schwartz, Scott C. Splinter, Neil S. Rodrigues, Paul M. Danehy, Killian E. Samuels, Christopher B. Kostyk, Ronald K. Hanson","doi":"10.1007/s00340-025-08476-1","DOIUrl":"10.1007/s00340-025-08476-1","url":null,"abstract":"<div><p>A tunable diode laser absorption spectroscopy sensor and a high-speed camera measuring narrow-band emission are deployed at the NASA Langley Hypersonic Materials Environmental Test System, a hypervelocity arc-heated tunnel. Both sensors target electronically-excited atomic oxygen. The sensors are used in conjunction to measure bulk translational temperatures (from 500 to 3000 K) and number densities of the <span>(^5S_2)</span> excited state of atomic oxygen (from near 0 to <span>(5times 10^{16})</span> m<span>(^{-3})</span>) in the arc-heated freestream at arc currents ranging from 100 to 250 Amperes, and with varying feed-gas mixtures composed of diatomic oxygen, diatomic nitrogen, and argon. Additionally, spatially-resolved diode laser absorption measurements of the same atomic oxygen energy-state population are collected near a silicon carbide test sample via an inverse Abel transform. Significant temporal flow transients are detected in the freestream on a 60-Hz timescale. These transients also propagate into the near-model shock layer. Further, qualitative agreement is obtained between absorption- and emission-based sensors. This study provides a quantitative, spatiotemporally-resolved dataset for future comparisons to computational models of the facility flowfield. The study also represents the first deployment of tunable diode laser absorption spectroscopy sensors in the Hypersonic Materials Environmental Test System.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 6","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143925636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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