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Dynamic formation of arrays of interacting optical spatial solitons under light-sheet illumination. 光片照射下相互作用光学空间孤子阵列的动态形成。
IF 3.1 2区 物理与天体物理
Optics letters Pub Date : 2025-07-01 DOI: 10.1364/OL.561703
Oto Brzobohatý, Lukáš Chvátal, Alexandr Jonáš, Pavel Zemánek
{"title":"Dynamic formation of arrays of interacting optical spatial solitons under light-sheet illumination.","authors":"Oto Brzobohatý, Lukáš Chvátal, Alexandr Jonáš, Pavel Zemánek","doi":"10.1364/OL.561703","DOIUrl":"https://doi.org/10.1364/OL.561703","url":null,"abstract":"<p><p>Colloidal suspensions of micron- and submicron-sized particles act as effective nonlinear media that can self-arrange into intricate static or dynamic structures upon illumination with a laser beam. Optical spatial solitons (OSSs) represent a prominent example of such light-induced structures. We study the formation of two-dimensional arrays of interacting OSSs from colloidal particles of varying sizes illuminated by counter-propagating light-sheet beams. We monitor evolution of growing OSS arrays upon addition of individual constituent particles and show that a small change in the total number of particles in the structure can induce long-range reconfiguration of the overall OSS layout. In particular, the minimal distance between the neighboring OSSs in the array is observed to nearly linearly increase with increasing number of constituent particles. Our experimental observations are semi-quantitatively supported by theoretical modeling based on the rigorous multiple Mie scattering theory.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 13","pages":"4318-4321"},"PeriodicalIF":3.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144541700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Enabling 1200-km optical DNANF transmissions via the space-time coded digital subcarrier modulation. 通过空时编码数字子载波调制实现1200公里DNANF光传输。
IF 3.1 2区 物理与天体物理
Optics letters Pub Date : 2025-07-01 DOI: 10.1364/OL.564128
Lipeng Feng, Lin Sun, Jiaqi Cai, Weiye Wang, Anxu Zhang, Lu Zhang, Peng Li, Lei Zhang, Jie Luo, Xishuo Wang, Zhengyu Liu, Xiaoli Huo, Gordon Ning Liu, Gangxiang Shen, Chengliang Zhang
{"title":"Enabling 1200-km optical DNANF transmissions via the space-time coded digital subcarrier modulation.","authors":"Lipeng Feng, Lin Sun, Jiaqi Cai, Weiye Wang, Anxu Zhang, Lu Zhang, Peng Li, Lei Zhang, Jie Luo, Xishuo Wang, Zhengyu Liu, Xiaoli Huo, Gordon Ning Liu, Gangxiang Shen, Chengliang Zhang","doi":"10.1364/OL.564128","DOIUrl":"https://doi.org/10.1364/OL.564128","url":null,"abstract":"<p><p>We fabricated 100-km double nested antiresonant nodeless fibers (DNANFs) and demonstrated their potential for long-haul hollow-core transmissions. We measured a PMD coefficient at 0.7 ps/<i>k</i><i>m</i> of the 100-km span. This elevated PMD necessitates longer multiple-input and multiple-output (MIMO) equalizer taps to compensate, thereby increasing DSP complexity. To deal with it, we introduce a coded modulation that leverages frequency-resolved equalization across multiple subcarriers to alleviate PMD impact by the reduced baud rate per subcarrier. Via implementing space-time coding (STC) on digital subcarrier modulations (DSCM), the imbalanced performance among subcarriers can be well equalized while suffering from severe frequency-selective fading for long-distance DNANF transmissions. By experimental validations on a loop configuration of 100-km DNANF spans, we demonstrated 40-Gbaud optical transmissions while investigating the proposed STC-DSCM. A 1200-km optical DNANF transmission was achieved with realizing Q-factor gain over 0.62 dB. These results underscore the feasibility of DNANF for long-haul optical communications while offering a pathway to manage PMD and frequency-selective fading efficiently by the proposed coded modulation.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 13","pages":"4170-4173"},"PeriodicalIF":3.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144541701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Frequency conversion in a hydrogen-filled hollow-core fiber: power scaling, background, and bandwidth. 充氢空心芯光纤中的频率转换：功率比例、背景和带宽。
IF 3.1 2区 物理与天体物理
Optics letters Pub Date : 2025-07-01 DOI: 10.1364/OL.553732
Anica Hamer, Frank Vewinger, Michael H Frosz, Simon Stellmer
{"title":"Frequency conversion in a hydrogen-filled hollow-core fiber: power scaling, background, and bandwidth.","authors":"Anica Hamer, Frank Vewinger, Michael H Frosz, Simon Stellmer","doi":"10.1364/OL.553732","DOIUrl":"https://doi.org/10.1364/OL.553732","url":null,"abstract":"<p><p>Large-area quantum networks based on optical fibers allow photons at near-infrared wavelengths to travel with minimal loss. Quantum frequency conversion is a method to alter the wavelength of a single photon while maintaining its quantum state. Most commonly, nonlinear crystals are employed for this conversion process, where near-unity conversion efficiency at high fidelity has been demonstrated. Still, the crystal-based conversion process is plagued by strong background noise, very limited spectral bandwidth, and inhomogeneous temperature profiles at strong pump fields. In the previous work, we have demonstrated frequency conversion in hydrogen-filled hollow-core fibers and claimed that this conversion process does not compromise performance at strong pump fields, is essentially free of background noise, and is intrinsically broadband. Here, we demonstrate that these three claims are justified: we demonstrate the quadratic scaling with pump field intensity, quantify the background level, and present coarse tuning over a range of 10 nm.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 13","pages":"4138-4141"},"PeriodicalIF":3.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144541710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Intelligent mode-locked single-cavity dual-comb laser utilizing time-stretch dispersive Fourier transform spectroscopy. 基于时间拉伸色散傅立叶变换光谱的智能锁模单腔双梳激光器。
IF 3.1 2区 物理与天体物理
Optics letters Pub Date : 2025-07-01 DOI: 10.1364/OL.566749
Pan Guo, Yuan Gao, Yongjie Pu, Zhigang Zhao, Zhenhua Cong, Sha Wang
{"title":"Intelligent mode-locked single-cavity dual-comb laser utilizing time-stretch dispersive Fourier transform spectroscopy.","authors":"Pan Guo, Yuan Gao, Yongjie Pu, Zhigang Zhao, Zhenhua Cong, Sha Wang","doi":"10.1364/OL.566749","DOIUrl":"https://doi.org/10.1364/OL.566749","url":null,"abstract":"<p><p>As single-cavity dual combs play a significant role in numerous high-precision measurements, their efficient generation has been widely researched. To achieve stable dual-comb mode locking remains, a two-part evaluation criterion containing a fitness function and a CNN-Transformer network is employed. Simulated time-stretch dispersive Fourier transform (DFT) spectra are used as datasets, which simplify the optimization process and do not rely on specific experimental data. A developed evolutionary algorithm (EA) for paddle-based motorized polarization controllers (MPCs) is proposed, enabling the intelligent attainment of dual-comb mode-locked states. A real-time library stores fitness and MPC angles, facilitating mode-locked state achievement within 2 s. Finally, long-term running of dual-comb mode locking is ensured by a random collision algorithm utilizing an evaluation criterion of weak soliton peaks.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 13","pages":"4406-4409"},"PeriodicalIF":3.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144541719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Phase response measurement and dynamic distortion correction of a spatial light modulator using the Shack-Hartmann wavefront sensor. 基于Shack-Hartmann波前传感器的空间光调制器相位响应测量及动态畸变校正。
IF 3.1 2区 物理与天体物理
Optics letters Pub Date : 2025-07-01 DOI: 10.1364/OL.565204
Mengyu Han, Shuhai Jia, Zinhan Lin, Bo Wen, Huajian Zhang, Longning Wang
{"title":"Phase response measurement and dynamic distortion correction of a spatial light modulator using the Shack-Hartmann wavefront sensor.","authors":"Mengyu Han, Shuhai Jia, Zinhan Lin, Bo Wen, Huajian Zhang, Longning Wang","doi":"10.1364/OL.565204","DOIUrl":"https://doi.org/10.1364/OL.565204","url":null,"abstract":"<p><p>This study introduces an innovative approach employing a Shack-Hartmann wavefront sensor (SHWS) to measure the phase response curve of a spatial light modulator (SLM) and correct dynamic distortion. To tackle nonlinear optical responses and pixel cross talk during SLM fabrication, a novel, to the best of our knowledge, grayscale map was designed to enhance phase measurement accuracy. The SHWS's sub-aperture measurement method simplifies the experimental setup and boosts efficiency. This method shows greater resilience to environmental variations than traditional interferometry, needing only two spot patterns to determine SLM phase information. Using a relative detection method, dynamic phase distortion is effectively measured and compensated. Results confirm the grayscale map's effectiveness in the utility of the derived phase response curve for SLM pixel-wise calibration. The study also details how the phase response curve and grayscale map characteristics are leveraged for SLM dynamic distortion compensation.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 13","pages":"4306-4309"},"PeriodicalIF":3.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144541741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Progress toward an efficient, uniformly scalable lithium niobate terahertz pulse source. 高效、均匀可扩展的铌酸锂太赫兹脉冲源的研究进展。
IF 3.1 2区 物理与天体物理
Optics letters Pub Date : 2025-07-01 DOI: 10.1364/OL.563154
Gergő Krizsán, Bálint Jurasits, Gábor Almási, János Hebling
{"title":"Progress toward an efficient, uniformly scalable lithium niobate terahertz pulse source.","authors":"Gergő Krizsán, Bálint Jurasits, Gábor Almási, János Hebling","doi":"10.1364/OL.563154","DOIUrl":"https://doi.org/10.1364/OL.563154","url":null,"abstract":"<p><p>We report significant progress in developing a compact, imaging-free, and scalable tilted-pulse-front-pumped (TPFP) terahertz (THz) source based on a nonlinear echelon slab. The slab thickness- and pump intensity-dependent THz generation efficiency have been characterized, reaching an efficiency of ∼0.085%, which is ∼2.8× higher than previously. The impact of microstructure quality shows that surface roughness reduces efficiency by lowering diffraction efficiency and increasing beam divergence. A simple theoretical model is introduced, which shows good agreement with experimental results and predicts significantly higher efficiency-exceeding 0.65% (2%) at room (cryogenic) temperature-with refined microstructure quality.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 13","pages":"4250-4253"},"PeriodicalIF":3.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144541747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Stretchable bioinspired compound eye structures with curved microlens arrays via a dry-phase rubbing process. 通过干相摩擦工艺制造具有弯曲微透镜阵列的可拉伸生物仿生复眼结构。
IF 3.1 2区 物理与天体物理
Optics letters Pub Date : 2025-07-01 DOI: 10.1364/OL.563370
Seunghwan Lee, Jinsu Yoon, Byeongmoon Lee, Yongtaek Hong
{"title":"Stretchable bioinspired compound eye structures with curved microlens arrays via a dry-phase rubbing process.","authors":"Seunghwan Lee, Jinsu Yoon, Byeongmoon Lee, Yongtaek Hong","doi":"10.1364/OL.563370","DOIUrl":"https://doi.org/10.1364/OL.563370","url":null,"abstract":"<p><p>A stretchable bioinspired compound (BIC) eye structure with a combination of dispensing and dry-phase rubbing processes is proposed as a printed optical component. A hemispherical macrolens is formed by the dispensing method, followed by a dry-phase rubbing process for arranging microparticles in monolayers onto the curved surface of the macrolens. This hierarchical structure is replicated in soft materials, which have intrinsic stretchability. A microlens array is formed on the surface of the macrolens and acts as a rigid island, thereby maintaining lens shape and resolution even though mechanical strain is applied to the overall hierarchical structures and the shape of the macrolens is changed.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 13","pages":"4458-4461"},"PeriodicalIF":3.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144541757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Topological mode switch by exceptional point encircling in a cavity magnonic system. 腔磁系统中异常点环的拓扑模式切换。
IF 3.1 2区 物理与天体物理
Optics letters Pub Date : 2025-07-01 DOI: 10.1364/OL.567749
Haoran Zhang, Chao Wang, Qiwen Bao, Zhenzhen Liu, Haoliang Liu, Jun-Jun Xiao
{"title":"Topological mode switch by exceptional point encircling in a cavity magnonic system.","authors":"Haoran Zhang, Chao Wang, Qiwen Bao, Zhenzhen Liu, Haoliang Liu, Jun-Jun Xiao","doi":"10.1364/OL.567749","DOIUrl":"https://doi.org/10.1364/OL.567749","url":null,"abstract":"<p><p>Cavity magnonic systems have attracted wide interest for their potential in bridging quantum electrodynamics and magnetism, while non-Hermitian physics has similarly garnered increasing attention. Here, we propose and experimentally investigate a tunable cavity magnonic system comprising a microwave cavity mode coupled to the Kittel mode in an yttrium iron garnet (YIG) ferromagnetic sphere. By controlling the damping and adjusting the cavity photon-magnon coupling strength, we realize and characterize exceptional points (EPs) in this system. We observe a transition in the transmission spectra from anticrossing to crossing as the coupling strength is tuned across the EP threshold, confirming the EP's presence. Furthermore, by carefully encircling the EP in a parameter space, we demonstrate dynamic topological mode switching, wherein the system's eigenvalues interchange upon completing a loop around the EP. Our results highlight the flexibility of a cavity magnonic platform for exploring non-Hermitian phenomena and pave the way for EP-based device applications in quantum information processing and topological photonics.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 13","pages":"4154-4157"},"PeriodicalIF":3.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144541761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Transparent metasurface absorber with wide-angle stability via gradient AgNWs/PDMS heterostructure. 通过梯度AgNWs/PDMS异质结构制备具有广角稳定性的透明超表面吸收体。
IF 3.1 2区 物理与天体物理
Optics letters Pub Date : 2025-07-01 DOI: 10.1364/OL.567455
Leyang Wang, Haipeng Li, Xiaopeng Shen, Zhenguo Gao, Ziqi Hao, Mengyi Ni
{"title":"Transparent metasurface absorber with wide-angle stability via gradient AgNWs/PDMS heterostructure.","authors":"Leyang Wang, Haipeng Li, Xiaopeng Shen, Zhenguo Gao, Ziqi Hao, Mengyi Ni","doi":"10.1364/OL.567455","DOIUrl":"https://doi.org/10.1364/OL.567455","url":null,"abstract":"<p><p>The rapid advancement of high-frequency and transparent electronic devices necessitates the concurrent optimization of electromagnetic loss and mechanical reliability in wave-absorbing materials. Aiming to resolve interfacial stress defects inherent in conventional multilayer absorbers, this study introduces an AgNWs/PDMS composite metastructure. By integrating gradient interlayer impedance matching with honeycomb-nested metastructures, the system achieves synergistic broadband absorption (>90% across 4.3-18 GHz for the TE mode, 3.9-18 GHz for the TM mode) and high transparency (80% visible transmittance). The gradient stress distribution strategy can improve mechanical durability, with an average absorption rate remaining above 80% after 1350 bending cycles. Subwavelength thickness (5.2 mm/0.067<i>λ<sub>L</sub></i>) and geometric anisotropy ensure angular stability, maintaining >80% absorption at an incident angle of 60°. This integrated design establishes an intelligent EM shielding paradigm, promising for 6G communications, aerospace, and beyond.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 13","pages":"4414-4417"},"PeriodicalIF":3.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144541763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Accurate measurement for the orbital angular momentum spectrum in scattering media based on a Faraday atomic filter. 基于法拉第原子滤波器的散射介质中轨道角动量谱的精确测量。
IF 3.1 2区 物理与天体物理
Optics letters Pub Date : 2025-07-01 DOI: 10.1364/OL.560664
Xiaoqian Liang, Yanfeng Bai, Lei Chen, Xiaohui Zhu, Weijun Zhou, Liyu Zhou, Qin Fu, Qi Zhou, Xuanpengfan Zou, Wei Tan, Xianwei Huang, Longfei Yin, Xiquan Fu
{"title":"Accurate measurement for the orbital angular momentum spectrum in scattering media based on a Faraday atomic filter.","authors":"Xiaoqian Liang, Yanfeng Bai, Lei Chen, Xiaohui Zhu, Weijun Zhou, Liyu Zhou, Qin Fu, Qi Zhou, Xuanpengfan Zou, Wei Tan, Xianwei Huang, Longfei Yin, Xiquan Fu","doi":"10.1364/OL.560664","DOIUrl":"https://doi.org/10.1364/OL.560664","url":null,"abstract":"<p><p>The orbital angular momentum (OAM) of beams has important applications in various fields such as large-capacity data transmission, imaging, and quantum information. So the precise measurement of the OAM spectrum is critical. Here, we present a direct and efficient method for measuring the OAM spectrum in a scattering medium using a Faraday atomic filter. Experimental results show that the Faraday atomic filter offers significant advantages in accurately identifying OAM under scattering media when compared to the results in the filterless device and the polarizer. Our work presents a novel, to the best of our knowledge, approach to precisely measure the OAM spectrum of vortex beams in complex scattering environments and will contribute to the advancement of various applications, including optical communications, lidar, and others.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 13","pages":"4162-4165"},"PeriodicalIF":3.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144541679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
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