Applied Physics B最新文献_第10页

Unveiling geometric quantum resources and uncertainty relation in a two-dimensional electron gas 揭示二维电子气体中的几何量子资源和不确定关系

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2024-12-18 DOI: 10.1007/s00340-024-08368-w

Chaimae Banouni, Zakaria Bouafia, Mostafa Mansour, Mohamed Ouchrif

{"title":"Unveiling geometric quantum resources and uncertainty relation in a two-dimensional electron gas","authors":"Chaimae Banouni, Zakaria Bouafia, Mostafa Mansour, Mohamed Ouchrif","doi":"10.1007/s00340-024-08368-w","DOIUrl":"10.1007/s00340-024-08368-w","url":null,"abstract":"<div><p>Understanding two-dimensional electron gas (2DEG) systems is crucial for a comprehensive grasp of their quantum potential. Due to the spins of electrons, 2DEG systems present a scalable and practical platform for housing qubits in quantum information processing. This paper investigates how the distance between delocalized electrons and electron density influences the dynamic behavior of the quantum-memory-assisted entropic uncertainty relation (<span>(mathcal {QMA-EUR})</span>) and non-classical correlations in 2DEG systems. Geometric quantum metrics, such as Bures distance entanglement (<span>(mathcal {B})</span>), measure the entanglement between the spins of two delocalized electrons, while trace distance discord (<span>(mathcal {TDD})</span>) assesses quantum correlations in 2DEG systems. The results indicate that electron density in 2DEGs is crucial for preserving quantum correlations and reducing <span>(mathcal {QMA-EUR})</span>. Moreover, the findings suggest that electron separations have a detrimental effect on entanglement and non-classical correlations in these systems. It is demonstrated that <span>(mathcal {QMA-EUR})</span> behaves inversely to quantum correlations of electron spins in 2DEGs. Additionally, by adjusting electron density thoughtfully, quantum correlations can be strengthened against electron separation, ultimately reducing <span>(mathcal {QMA-EUR})</span>. These insights open up fascinating prospects for harnessing 2DEG systems in quantum information processing.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844886","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

Diversity and manipulability of pump-probe absorption spectra for a degenerate two-level system 退化两电平系统泵探针吸收光谱的多样性和可操控性

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2024-12-18 DOI: 10.1007/s00340-024-08366-y

JiaYu Han, Yue Sun, YingJie Du

{"title":"Diversity and manipulability of pump-probe absorption spectra for a degenerate two-level system","authors":"JiaYu Han, Yue Sun, YingJie Du","doi":"10.1007/s00340-024-08366-y","DOIUrl":"10.1007/s00340-024-08366-y","url":null,"abstract":"<div><p>We present a theoretical study of pump-probe spectra of a degenerate two-level system subject to a magnetic field, which is driven by three different polarized fields and probed by two different polarized fields. In this system, the optical effects of two-photon resonance, coherent hole burning (CHB), as well as electromagnetically induced absorption (EIA) are involved. Based on the match between the pump and probe fields, four sets of electromagnetically induced transparencies (EITs) and two sets of CHBs are included in the coherent system. The types of Mollow absorption and absorption spectra with four main peaks are obtained, in which the absorption peaks are modified by the dips of EITs and CHBs. In the weak coupled fields, six-peak and eight-peak absorption spectra form for the two cases respectively. However, for the strong coupled fields, the absorption spectra with seven or nine peaks arise due to the dressed levels. With the adjustable coupled detunings, the transparent windows of EIT and CHB can be manipulated according to the need, and with the technique of manipulation of spectra, the enhanced atomic absorption with two subnatural-linewidth peaks can be achieved.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844887","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

Modeling the electron density distribution with a nonthermal-nonextensive function for nonlinear laser–plasma interactions 针对非线性激光-等离子体相互作用，用非热-非扩展函数模拟电子密度分布

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2024-12-18 DOI: 10.1007/s00340-024-08369-9

Lyes Djebarni, Fayçal Hadj-Larbi, Djamila Bennaceur-Doumaz

{"title":"Modeling the electron density distribution with a nonthermal-nonextensive function for nonlinear laser–plasma interactions","authors":"Lyes Djebarni, Fayçal Hadj-Larbi, Djamila Bennaceur-Doumaz","doi":"10.1007/s00340-024-08369-9","DOIUrl":"10.1007/s00340-024-08369-9","url":null,"abstract":"<div><p>The mixed nonthermal-nonextensive electron density distribution function is increasingly used to describe various types of plasmas, but to the best of our knowledge, there is no report on the use of this new kind of functions to describe nonlinear laser-collisionless plasma interaction with the approach proposed here. In this contribution, we generalized the Tribeche-Tsallis-Cairns hybrid distribution to describe our plasma by the above-mentioned function, and nonextensive ions. By using the Maxwell equations, the relativistic two-fluid model and the slowly-varying-amplitude approximation, we derived equations for the description of the nonlinear dynamics of a circularly-polarized laser-beam interacting with collisionless non-Maxwellian magnetized plasma. Taking into account the ponderomotive force, the external magnetic field, and other plasma parameters, we found that the latter cause and affect some nonlinear phenomena in the considered plasma. These phenomena include the modulational instability (MI), the envelope solitary waves, and the laser-beam self-focusing. The present work investigates analytically and numerically these nonlinear phenomena. The results show that the existence of the electron density, with a high-energy particles hybrid distribution function tail, and other factors play an essential role in the plasma nonlinearity features. We noted that the more the electron and ion density distributions tend to the Maxwellian form, the nonlinearity and the MI’s growth rate increase, the envelope solitary waves amplitude decreases, and the laser-beam self-focusing property enhances. Our contribution generalizes some previous models describing laser-plasma interactions, and suggests that the above-mentioned function could be a good candidate to describe simulations and experiments involving nonlinear laser-collisionless plasma interactions.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844888","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

High-order harmonic generation in Bi and Pb plasmas Bi和Pb等离子体中的高次谐波产生

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2024-12-12 DOI: 10.1007/s00340-024-08375-x

R. A. Ganeev, S. R. Kamalov, I. B. Sapaev, B. S. Mirzaev

引用次数: 0

Study on the coupling characteristics of water-jet guided high-power laser based on negative defocus coupling alignment method 基于负离焦耦合准直方法的高功率水射流激光耦合特性研究

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2024-12-12 DOI: 10.1007/s00340-024-08360-4

Guanghui Zhang, Yuxing Huang, Ping Huang, Zhichuang Chen, Tielin Shi, Hui Jiao, Yuhong Long

{"title":"Study on the coupling characteristics of water-jet guided high-power laser based on negative defocus coupling alignment method","authors":"Guanghui Zhang, Yuxing Huang, Ping Huang, Zhichuang Chen, Tielin Shi, Hui Jiao, Yuhong Long","doi":"10.1007/s00340-024-08360-4","DOIUrl":"10.1007/s00340-024-08360-4","url":null,"abstract":"<div><p>Water-jet guided laser machining is an innovative hybrid laser processing technique known for its minimal heat-affected zone, precise grooving, and high depth-to-width ratio. A critical factor in achieving high machining quality is the precise alignment of the laser and water-jet, especially in high-power applications where maintaining stable coupling and ensuring thermal safety present significant challenges. A negative defocus coupling method is proposed to enhance the laser-water-jet coupling tolerance and improve system stability. Using ray tracing simulations and experiments, the laser spot distribution within the water-jet under different defocusing conditions was analyzed. The results demonstrate that negative defocus coupling effectively reduces laser power density at the optical window and nozzle, protecting them from thermal damage. Additionally, negative defocus coupling improves laser and water-jet coupling efficiency and increases the system’s tolerance to higher laser power levels. These findings validate the feasibility and benefits of negative defocus coupling, offering a reliable solution for efficient, water-jet guided high-power laser machining with enhanced component protection and machining quality.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142811240","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

In-situ analysis of methane plasmas with mid-infrared supercontinuum-based Fourier-transform spectroscopy 甲烷等离子体的中红外超连续傅立叶变换光谱原位分析

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2024-12-10 DOI: 10.1007/s00340-024-08370-2

Roderik Krebbers, Ningwu Liu, Wessel Averink, Frans J. M. Harren, Tom Butterworth, Gerard van Rooij, Amir Khodabakhsh, Simona M. Cristescu

{"title":"In-situ analysis of methane plasmas with mid-infrared supercontinuum-based Fourier-transform spectroscopy","authors":"Roderik Krebbers, Ningwu Liu, Wessel Averink, Frans J. M. Harren, Tom Butterworth, Gerard van Rooij, Amir Khodabakhsh, Simona M. Cristescu","doi":"10.1007/s00340-024-08370-2","DOIUrl":"10.1007/s00340-024-08370-2","url":null,"abstract":"<div><p>The conversion of methane (CH<sub>4</sub>) into the hydrocarbons ethane (C<sub>2</sub>H<sub>6</sub>) and acetylene (C<sub>2</sub>H<sub>2</sub>) in plasma is investigated in the first in-situ study using a mid-infrared supercontinuum source and a Fourier transform spectrometer. Due to the spatial coherence of the supercontinuum source, it is possible to probe the plasma over a path length of 3.5 m and observe CH<sub>4</sub>, C<sub>2</sub>H<sub>6</sub>, and C<sub>2</sub>H<sub>2</sub> with concentrations below percent level at a few mbar pressure. The broad spectral range of the supercontinuum source (1.4–4.1 μm) covers entire rovibrational bands of molecules, allowing simultaneous detection of the rotational and vibrational temperature of CH<sub>4</sub> and C<sub>2</sub>H<sub>2</sub>. The ability to study these experimental parameters in situ opens new possibilities for understanding and optimizing plasma-based chemical conversions.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00340-024-08370-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142798263","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

Generation of different Pulse States in a nonlinear amplifying Loop Mirror-based 1.7 μm Fiber laser 基于非线性放大环镜的1.7 μm光纤激光器中不同脉冲状态的产生

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2024-12-09 DOI: 10.1007/s00340-024-08363-1

Tong Wu, Peng Zhang, Yuzhu Ning, Yang Liu, Hao Yu, Dongjing Li, Xinyu Ji, Chunyu Wang

引用次数: 0

Two-photon absorption with vector Gaussian beams 矢量高斯光束的双光子吸收

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2024-12-08 DOI: 10.1007/s00340-024-08361-3

Ferhat Kessi

{"title":"Two-photon absorption with vector Gaussian beams","authors":"Ferhat Kessi","doi":"10.1007/s00340-024-08361-3","DOIUrl":"10.1007/s00340-024-08361-3","url":null,"abstract":"<div><p>In this study, we present an analytical model for nonlinear absorption processes utilizing vectorial Gaussian beams within the weak nonlinearity regime. We have developed an expression for normalized transmittance, encompassing both linear and second-order nonlinear absorption, while incorporating the axial field component of tightly focused beams. This model, contextualized within the Z-scan technique framework, enables precise characterization of nonlinear absorption coefficients. Our simulations examine the effects of various polarization states and beam focusing characteristics on nonlinear absorption. The results unveil nuanced differences in nonlinear absorption among linearly polarized, circularly polarized, and unpolarized light. Notably, increasing the beam divergence angle results in broader transmittance curves, while the nonlinear absorption magnitude remains relatively stable. These findings underscore the significance of considering the full vectorial nature of tightly focused beams in nonlinear optics. Our model elucidates the intricate relationship between beam properties and nonlinear responses, with implications for applications such as nonlinear microscopy, optical limiting, and advanced photonic device development.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790430","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

Combination dual-tapered fiber with band-pass filter in generating multi-wavelength Er3+-doped fiber laser 双锥光纤与带通滤波器组合用于产生多波长掺Er3+光纤激光器

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2024-12-03 DOI: 10.1007/s00340-024-08362-2

Yunqi Hao, Weitong Liao, Miao Miao, Nannan Liu, Fengxiao Zhai, Kun Yang

{"title":"Combination dual-tapered fiber with band-pass filter in generating multi-wavelength Er3+-doped fiber laser","authors":"Yunqi Hao, Weitong Liao, Miao Miao, Nannan Liu, Fengxiao Zhai, Kun Yang","doi":"10.1007/s00340-024-08362-2","DOIUrl":"10.1007/s00340-024-08362-2","url":null,"abstract":"<div><p>we propose to add a bandpass filter into multi-wavelength Er<sup>3+</sup>-doped fiber laser to avoid the mode competition in the ring-cavity laser based on comb-like dual-tapered fiber. The bandwidth of bandpass filter is within 1543.5–1558.5 nm, excluding the gain peak of Er<sup>3+</sup>-doped fiber around 1530 nm. The gain of Er<sup>3+</sup>-doped fiber within the filter bandwidth is uniform. When realizing the multi-wavelength laser output, 1-, 2-, 3-, 4- laser lines are obtained by adjusting the polarization controller, and the laser lines distribute at the interference wavelengths of dual-tapered fibers within the bandwidth of bandpass filter. Tunability of the multi-wavelength laser are demonstrated, including tunability range and wavelength spacing. Tunability ranges of 12.10 nm for single-wavelength, 9.312 nm for dual-wavelength, 4.3 nm for three-wavelength are generated; wavelength spacing of 1/2/3/4/5 intervals for dual-wavelength, 5.2 nm/7.6 nm for three-wavelength, 5.26 nm/2.64 nm/5.0 nm for four-wavelength are all generated. Stability of laser output in 1 h are tested. The proposed gain-balancing BPOF scheme in multi-wavelength EDFL is simple and effective to suppress the mode competition. These results could be used to support the practical applications of multi-wavelength Er<sup>3+</sup>-doped fiber laser.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142761928","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

Study on properties of microcavity resonance of AlGaInP based hexagonal photonic crystal AlGaInP基六方光子晶体微腔共振特性研究

IF 2 3区物理与天体物理

Applied Physics B Pub Date : 2024-12-02 DOI: 10.1007/s00340-024-08364-0

Duo Liang, Tao Lin, Xuhao Lei, Chaoyang Xie, Haoxiang Huang, Jiale Dang, Jianan Xie, Zhongjie Guo, Hongwei Xie

{"title":"Study on properties of microcavity resonance of AlGaInP based hexagonal photonic crystal","authors":"Duo Liang, Tao Lin, Xuhao Lei, Chaoyang Xie, Haoxiang Huang, Jiale Dang, Jianan Xie, Zhongjie Guo, Hongwei Xie","doi":"10.1007/s00340-024-08364-0","DOIUrl":"10.1007/s00340-024-08364-0","url":null,"abstract":"<div><p>At present, the high power of the red semiconductor laser has been achieved. Improving the beam quality and reducing the divergence angle of the device have become urgent problems to be solved. The red semiconductor laser using photonic crystal as the waveguide has a confinement effect on the optical field, can restrain the high-order mode lasing and reduce the fundamental mode loss, and improve the performance of the cavity. In this paper, a cavity structure of AlGaInP-based photonic crystal with defect holes is proposed to achieve short-wavelength red resonance with high quality (Q) factor and small mode volume (<i>V</i><sub><i>m</i></sub>). The working mechanism of photonic crystal cavity with defect holes is studied by energy band analysis. Based on the principle of defect local state and edge of photonic crystal band, in-plane feedback, high Q-factor resonance and out-of-plane vertical emission of photons are realized. The resonant properties of the defect region and the non-defect region are studied using finite difference time domain (FDTD) method. The dependence of the Q-factor, cavity loss, resonant frequency on the parameters of the cavity is discussed. The results demonstrate that the in-plane loss can be effectively reduced by the photonic crystal defect holes, and the resonant wavelength is 640.569 nm. Finally, the Q-factor reaches over 10<sup>7</sup> and the mode volume is only 0.61(<i>λ</i>/<i>n</i>)<sup>3</sup>.</p></div>","PeriodicalId":474,"journal":{"name":"Applied Physics B","volume":"131 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142761887","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