Optics Communications最新文献_第4页

Lattice light sheets generated with vault array and optimized pupil masks 点阵光片生成与拱顶阵列和优化的瞳孔掩模

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-05-01 DOI: 10.1016/j.optcom.2025.131955

Guangjun Yin, Qing Lu, Yuanqing Wang

引用次数: 0

Tail to tail connected double-funnel-shaped beam 尾对尾连接双漏斗形梁

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-05-01 DOI: 10.1016/j.optcom.2025.131953

Chaojie Jiang , Yixuan Wu , Shaohua Tao

{"title":"Tail to tail connected double-funnel-shaped beam","authors":"Chaojie Jiang , Yixuan Wu , Shaohua Tao","doi":"10.1016/j.optcom.2025.131953","DOIUrl":"10.1016/j.optcom.2025.131953","url":null,"abstract":"<div><div>The ability to fabricate inner structures in materials without surface damage is crucial for micro-nano processing. In this paper, we propose a class of double-funnel-shaped beam (DFSB). The narrow part of a funnel is referred to as the tail. The propagation trajectory of the DFSB resembles two funnels connected at their tails. The DFSB contains three distinct propagation stages: compression, stabilization, and expansion. During the compression stage, the size of the beam decreases with increasing propagation distance while maintaining a relatively low peak intensity. Subsequently, in the stabilization stage, the beam size remains constant over a long propagation distance and the peak intensity remains at a high level. Finally, in the expansion stage, the beam size gradually expands with increasing propagation distance and the peak intensity decreases to a lower level. We designed and experimentally generated the DFSB, verifying that its propagation characteristics are consistent with the design. Unlike the existing beams, which typically exhibit only the expansion stage or a combination of two stages, the DFSB encompasses all three stages. The controlled modulation of beam size and intensity during the stabilization stage makes the DFSB a promising tool for creating intricate structures, such as inner microchannels, photonic crystals, and microlens arrays, inside the material without compromising the surface.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"587 ","pages":"Article 131953"},"PeriodicalIF":2.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143917948","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

Effects of focusing geometries and detection methods on laser-induced breakdown spectroscopy of an aluminum target 聚焦几何形状和检测方法对铝靶激光诱导击穿光谱的影响

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-05-01 DOI: 10.1016/j.optcom.2025.131951

Yifan Luo , Nan Li , Jiaxu Zhang , Yangyang Zhao , Jiaojian Song , Yongqiu Zheng

{"title":"Effects of focusing geometries and detection methods on laser-induced breakdown spectroscopy of an aluminum target","authors":"Yifan Luo , Nan Li , Jiaxu Zhang , Yangyang Zhao , Jiaojian Song , Yongqiu Zheng","doi":"10.1016/j.optcom.2025.131951","DOIUrl":"10.1016/j.optcom.2025.131951","url":null,"abstract":"<div><div>The effective breakdown and signal detection are the basis of laser-induced breakdown spectroscopy (LIBS) optical systems for elemental analysis. High-quality spectra can provide reliable data support for LIBS technology. In this work, the effects of focusing geometries and detection methods were investigated on LIBS analysis of an aluminum target at laser energies of 2, 10 and 20 mJ. Two focusing geometries were selected for comparison, namely focusing with a beam expander and focusing directly. The plasma signals were collected backward through a dichroic mirror. Two detection methods were employed, one to detect the plasma emission through transmission fibers at different angles and the other to couple the plasma emission directly into the entrance slit of the spectrometer. It is shown that focusing with a beam expander could increase the focusing angle and decrease the laser power density, leading to poor focusing quality, relatively weak signal intensity and signal-to-noise ratio (SNR). Focusing without a beam expander makes the ablation crater smaller and deeper, and leads to the enhancement of line intensity and SNR compared to focusing with a beam expander. In addition, detection by the entrance slit of the spectrometer directly can reflect the difference between the focusing geometries truthfully. The optical fiber endface offers a wide range of reception angles, enabling it to absorb more plasma emissions and reduce signal loss. Larger detection angles are typically preferred when detecting via optical fiber to achieve superior LIBS signals, which has been verified by plasma images. The present results suggest that focusing without a beam expander and detection by an optical fiber with a large angle make it easier to obtain high quality plasma signals when performing LIBS measurements on solid samples.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"587 ","pages":"Article 131951"},"PeriodicalIF":2.2,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928866","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

Nonreciprocal magnon–magnon entanglement based on magnon Kerr effect 基于磁振子克尔效应的非互易磁振子纠缠

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-04-30 DOI: 10.1016/j.optcom.2025.131897

Xi-Yao Ma, Jin-Liang Guo

引用次数: 0

High-precision micro-nano fabrication using two-photon etching and spatial light modulators 利用双光子蚀刻和空间光调制器的高精度微纳制造

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-04-30 DOI: 10.1016/j.optcom.2025.131947

Ke Xu , Xianru Li , Haifeng Gong , Yunpeng Li , Xiaoduo Wang

引用次数: 0

High probability scheme for Zero photon subtraction with Mach–Zehnder interferometer 马赫-曾德干涉仪零光子减法的高概率方案

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-04-30 DOI: 10.1016/j.optcom.2025.131917

Muhammad Idrees, Shengli Zhang

{"title":"High probability scheme for Zero photon subtraction with Mach–Zehnder interferometer","authors":"Muhammad Idrees, Shengli Zhang","doi":"10.1016/j.optcom.2025.131917","DOIUrl":"10.1016/j.optcom.2025.131917","url":null,"abstract":"<div><div>Photon addition and subtraction involve the addition or removal of photons to manipulate quantum states and are used in various applications. Zero Photon Subtraction (ZPS) is a quantum operation that reduces the mean number of photons in a state without physically removing them. In this study, we propose a method that utilizes a Mach–Zehnder interferometer (MZI) for ZPS operation to enhance flexibility and control while improving efficiency. This modification demonstrates a high probability of success, which increases with phase modification. We discuss how the proposed ZPS scheme manipulates the Mandel factor of quantum states and note an increase in both the photon number statistics and probabilities using our approach. Furthermore, we explore the potential applications of this method in noiseless loss suppression (NLS) by applying the ZPS as noiseless attenuation to input Schrödinger cat states and squeezed vacuum states. Squeezing in the <span><math><mi>x</mi></math></span>-quadrature improved by approximately 17.28%. Finally, we applied ZPS to NLS in entanglement transmission and observed an improvement of 4.53% in entanglement negativity with the well-known ZPS scheme, whereas the proposed ZPS scheme showed a significant improvement of 40.83 %. The proposed ZPS scheme has potential applications in various fields of quantum information technology.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"587 ","pages":"Article 131917"},"PeriodicalIF":2.2,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143907030","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

Mid-infrared Rabi splitting between transverse optical phonon and Fabry–Perot cavity mode 横向光学声子和法布里-珀罗腔模式的中红外拉比分裂

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-04-30 DOI: 10.1016/j.optcom.2025.131903

Hongjing Li , Jun Cao , Gang Lu , Gaige Zheng

{"title":"Mid-infrared Rabi splitting between transverse optical phonon and Fabry–Perot cavity mode","authors":"Hongjing Li , Jun Cao , Gang Lu , Gaige Zheng","doi":"10.1016/j.optcom.2025.131903","DOIUrl":"10.1016/j.optcom.2025.131903","url":null,"abstract":"<div><div>In this paper, we investigate the strong coupling and Rabi splitting between the transverse optical (TO) phonon and Fabry–Perot (FP) cavity mode under both transverse electric (TE) and transverse magnetic (TM) polarizations. The proposal is a prism coupling setup implementing the Otto configuration, where a highly-transmission KRS-5 prism enables phase-matched excitation of TO phonon polariton across an air gap. A layer of vanadium dioxide (VO<sub>2</sub>) provides FP resonance, which can couple with TO phonon at almost the same wavelength. Owing to the strong coupling, the Rabi splitting reaches 58 meV. Besides, the coupling strength can be flexibly controlled by the angle of incidence, the thickness of each layer, and the phase state of VO<sub>2</sub>. The combination of VO<sub>2</sub>’s phase transition and its integration with FP mode introduces a powerful method for achieving strong coupling with tailored light–matter interaction strengths. As for the case of TE-polarization, the resonances of the FP mode and TO phonon polariton can still interact strongly. Our findings highlight the potential in creating adaptive photonic systems, capable of operating in a wide range of applications that demand dynamic control over coupling and resonance frequencies.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"587 ","pages":"Article 131903"},"PeriodicalIF":2.2,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143907029","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

An inverse-designed topological waveguide crossing on valley-Hall photonic crystals 反向设计的拓扑波导在谷霍尔光子晶体上的交叉

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-04-30 DOI: 10.1016/j.optcom.2025.131948

Lu He , Hongyan Ji , Yi Dong , Xiangdong Zhang

{"title":"An inverse-designed topological waveguide crossing on valley-Hall photonic crystals","authors":"Lu He , Hongyan Ji , Yi Dong , Xiangdong Zhang","doi":"10.1016/j.optcom.2025.131948","DOIUrl":"10.1016/j.optcom.2025.131948","url":null,"abstract":"<div><div>Waveguide crossings are essential in integrated photonics, enabling light to cross paths without significant loss or interference. They are crucial for interconnecting photonic components in complex circuits, facilitating high-density integration. However, conventional waveguide crossings face challenges related to sensitivity of fabrication errors and large footprints. To address these issues, topological photonics could, in principle, be introduced into the design of robust and compact waveguide crossing. However, how to realize the topological waveguide crossing is still a challenge. In this work, we report the realization of an inverse-designed topological waveguide crossing in a 2.5 × 2.5 μm<sup>2</sup> footprint. The topological waveguide crossing achieves high transmission and low crosstalk (<-20 dB) within the telecommunication band. By integrating this crossing with topological beam splitters and a thermo-optic phase shifter, we also design the topological 2 × 2 Mach-Zehnder interferometer with a 25 × 50 μm<sup>2</sup> footprint. Numerical simulations show that our designed devices are robust against perturbations, and possess high extinction ratios. Our design offers a promise for reconfigurable optical interconnects, large-scale quantum circuits, and ultra-dense programmable photonic integrated circuits.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"587 ","pages":"Article 131948"},"PeriodicalIF":2.2,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899415","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

SiN loaded thin film lithium niobate waveguides for the generation of spectrally uncorrelated photon pairs 用于产生光谱不相关光子对的氮化锂薄膜铌酸锂波导

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-04-30 DOI: 10.1016/j.optcom.2025.131915

Pranav Chokkara, Muskan Arora, Jasleen Lugani

{"title":"SiN loaded thin film lithium niobate waveguides for the generation of spectrally uncorrelated photon pairs","authors":"Pranav Chokkara, Muskan Arora, Jasleen Lugani","doi":"10.1016/j.optcom.2025.131915","DOIUrl":"10.1016/j.optcom.2025.131915","url":null,"abstract":"<div><div>Silicon nitride (SiN) loaded thin film lithium niobate (TFLN) is an emerging integrated photonics platform, which benefits from the simplified etching process of SiN as well as the favorable optical properties of lithium niobate (LN). Depositing a layer of SiN facilitates the fabrication of sub micron-sized waveguides on TFLN, dispersion properties of which can be tailored for efficient spontaneous parametric down-conversion (SPDC), giving rise to the desired biphoton state. In this work, we focus on this aspect and explore SiN loaded TFLN waveguides for the generation of spectrally uncorrelated photon pairs based on type-II phase-matched SPDC process. We perform extensive simulations and optimize the waveguide geometry to avoid lateral mode leakage and satisfy group index matching condition, required to achieve a spectrally factorizable photon pair state with high generation efficiency, which remains tolerant to imperfections in the fabrication. For this optimized waveguide design, we compute joint spectral intensity and report spectrally pure photons with high purity (>97% ). Such a novel source of uncorrelated photon pairs will serve as a crucial resource for various quantum optics tasks.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"587 ","pages":"Article 131915"},"PeriodicalIF":2.2,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899414","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

WTF-former: A model for predicting optical chaos in laser system WTF-former：一种预测激光系统光混沌的模型

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-04-30 DOI: 10.1016/j.optcom.2025.131946

Jiahui Zou , Tianshu Wang , Deqi Li , Qiyao Wang

{"title":"WTF-former: A model for predicting optical chaos in laser system","authors":"Jiahui Zou , Tianshu Wang , Deqi Li , Qiyao Wang","doi":"10.1016/j.optcom.2025.131946","DOIUrl":"10.1016/j.optcom.2025.131946","url":null,"abstract":"<div><div>Optical chaotic phenomena in semiconductor lasers have a wide range of applications in random bit generation and secure communications, and although a lot of effort has been expended to study these chaotic behaviors through numerical simulations, it is still challenging to accurately predict chaotic dynamics using a limited number of observations. Existing solutions often start from time-domain features only and use machine learning and neural network means to make predictions, with insufficient ability of the model to learn chaotic behaviors and low prediction accuracy. Here, we propose a novel neural network model for continuous prediction of optical chaotic phenomena, the WTF-former, which has a strong ability of chaotic feature learning and can effectively capture the behavior of optical chaos. It designs an iTransformer neural network based on Wavelet Convolution (WTConv) and Frequency Enhanced Channel Attention Mechanism (FECAM), which can capture the feature information in both time and frequency domains for better prediction of optical chaotic phenomena. The simulation results show that our proposed model is capable of predicting chaotic time series up to 6 ns under different laser conditions, and the Mean Absolute Error (MAE), Root Mean Squard Error (RMSE), and R-Square (<span><math><mrow><msup><mi>R</mi><mn>2</mn></msup></mrow></math></span>) comparative metrics are better than those of existing models. Finally, we conducted ablation experiments to verify the effectiveness of our designed WTConv, FECAM module, and iTransformer as the backbone network. The results show that our designed WTF-former network is capable of accurate and continuous prediction of semiconductor laser optical chaos phenomena over a long period of time.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"587 ","pages":"Article 131946"},"PeriodicalIF":2.2,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143904409","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