Optics and Laser Technology最新文献_第8页

Spectrally-selective SPR fiber-optic sensor for simultaneous monitoring of glucose, pH, and temperature in biopharmaceutical processes 光谱选择性SPR光纤传感器，用于同时监测生物制药过程中的葡萄糖，pH值和温度

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology

Pub Date : 2026-04-01 Epub Date: 2026-01-03 DOI: 10.1016/j.optlastec.2025.114645

Pengxiao Guo , Kanglei Wang , Huijing Du , Lei Zhang , Jianshe Li , Li Huo , Shuguang Li

In order to meet the requirements of real-time control of multiple parameters in biopharmaceutical processes, this paper proposes an SPR fiber optic sensor with spectral selectivity for simultaneous measurement of glucose concentration, pH value, and temperature. The sensor is a triple cascade structure, with an Ag film used to measure glucose concentration, PAA/CS self-assembly is performed on the Ag/TiO₂ surface for measuring pH, and Ag/MoS₂/PDMS is used for measuring temperature. The innovation of this paper lies in utilizing the different optical properties of TiO₂ and MoS₂ and the response differences of functional films to different measured parameters, to endow the three-sensor band spectral selectivity, and achieve distinguishable and non-interfering synchronous responses of three parameters within the full spectrum (400–1700 nm). The experimental results showed that the sensitivity of sugar content (0–35 %) and temperature (−10–100 °C) were 5.29 nm/% and 6.8 nm/°C, respectively. At the same time, pH could be accurately measured in the range of 3.22–10.12, with detection limits of 0.151 %, 0.117 °C, and 0.043 pH, respectively, demonstrating good stability and covering the key range of typical fermentation processes. The functional film design and spectral selection mechanism proposed in this study have great potential for application in precisely grasping key parameters in biological fermentation and pharmaceuticals, and provide a new paradigm for the structural integration of multi-parameter sensors.

为了满足生物制药过程中多参数实时控制的要求，本文提出了一种具有光谱选择性的SPR光纤传感器，可同时测量葡萄糖浓度、pH值和温度。该传感器为三级联结构，其中Ag膜用于测量葡萄糖浓度，PAA/CS在Ag/TiO2表面自组装用于测量pH， Ag/MoS2/PDMS用于测量温度。本文的创新之处在于利用TiO2和MoS2的不同光学性质以及功能膜对不同测量参数的响应差异，赋予三传感器波段的光谱选择性，在全光谱范围内（400-1700 nm）实现三个参数的可分辨且互不干扰的同步响应。实验结果表明，糖含量（0 ~ 35%）和温度（−10 ~ 100℃）的敏感性分别为5.29 nm/%和6.8 nm/℃。同时，pH在3.22 ~ 10.12范围内可准确测定，检出限分别为0.151%、0.117℃和0.043 pH，稳定性好，覆盖了典型发酵过程的关键范围。本研究提出的功能膜设计和光谱选择机制在生物发酵和制药关键参数的精确把握方面具有很大的应用潜力，并为多参数传感器的结构集成提供了新的范例。

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引用次数: 0

Compact modified Chernin cell-based formaldehyde spectrometer with laser current jitter for fringe noise suppression 紧凑型改进Chernin细胞甲醛光谱仪，激光电流抖动用于条纹噪声抑制

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology

Pub Date : 2026-04-01 Epub Date: 2026-01-07 DOI: 10.1016/j.optlastec.2025.114648

Weimin Duan , Bo Fang , Heng Zhang , Weixiong Zhao , Nuo Chen , Weijun Zhang

Formaldehyde (HCHO) is a significant air pollutant in urban environments, impacting both air quality and public health. Mobile monitoring of HCHO allows for accurate source attribution and effective emission control strategies; however, this necessitates instruments with rapid response, high sensitivity, and robustness under mobile operation conditions. This work presents a robust mid-infrared wavelength modulation spectrometer for HCHO measurement. A compact modified Chernin cell with a path length of up to 120 m at 50 cm optical base length was developed to improve detection sensitivity. Real-time rapid background subtraction was implemented to eliminate spectral background structures. Laser current jitter was employed to suppress optical interference fringes and vibration-induced noise. The developed spectrometer achieved a detection limit of 0.89 ppbv with an averaging time of 1 s, corresponding to a detection sensitivity of 3.1 × 10^-9 cm⁻¹. The spectrometer demonstrates high robustness and offers a reliable solution for precision mobile HCHO monitoring.

甲醛（HCHO）是城市环境中一种重要的空气污染物，影响着空气质量和公众健康。HCHO的移动监测可以实现准确的源归属和有效的排放控制策略；然而，这需要在移动操作条件下具有快速响应、高灵敏度和鲁棒性的仪器。本文提出了一种用于HCHO测量的鲁棒中红外波长调制光谱仪。为了提高检测灵敏度，开发了一种紧凑的改进Chernin电池，其光基长度为50 cm，路长可达120 m。采用实时快速背景减法消除光谱背景结构。利用激光电流抖动抑制光干涉条纹和振动噪声。该光谱仪的检出限为0.89 ppbv，平均时间为1 s，检测灵敏度为3.1 × 10-9 cm−1。该光谱仪具有较高的鲁棒性，为高精度移动HCHO监测提供了可靠的解决方案。

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引用次数: 0

Laser-etching-assisted electrodeposition strategy for constructing durable superhydrophobic coatings with enhanced anti-icing and corrosion resistance 激光蚀刻辅助电沉积策略用于构建具有增强防冰和耐腐蚀性的耐用超疏水涂层

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology

Pub Date : 2026-04-01 Epub Date: 2026-01-09 DOI: 10.1016/j.optlastec.2025.114625

Jiahao Yang , Jun Lv , Yujun Liu , Jiangpeng Qu , Jing Zhao , Jiliang Mo

In this work, we propose a robust laser-etching-assisted electrodeposition strategy for constructing mechanically durable, anti-icing and corrosion-resistant superhydrophobic coatings on aluminum substrates. By integrating precisely patterned microhole arrays generated via laser etching with the in-situ co-deposition of aluminum myristate and SiC nanoparticles under CTAB regulation, highly uniform hierarchical micro/nanostructures with strong interfacial adhesion were achieved. The optimized hybrid coating exhibits a water contact angle of 157.4° and a surface roughness of 16.586 μm, significantly outperforming traditional electrodeposited coatings. Mechanistic analysis reveals that the multiscale porous architecture, together with the uniformly distributed low-surface-energy organic layer, synergistically stabilizes of the Cassie-Baxter state, enhances air entrapment and strengthens barrier performance. Consequently, the coating maintains superhydrophobicity after 960 cm of abrasion under 1.3 kPa pressure (a 7 times improvement over non-laser-treated surfaces), delays water droplet freezing time by more than 8 times at −15 °C and reduces corrosion current density by nearly four orders of magnitude in 3.5 wt% NaCl solution. These superior properties arise from the coupling of mechanical protection provided by the microhole array with the chemical robustness of the deposited hydrophobic layer. This scalable and environmentally friendly approach effectively addresses the longstanding challenges of weak durability and limited protection capability in conventional superhydrophobic coatings, offering a promising pathway for large-scale application in harsh engineering environments such as aerospace, marine and outdoor infrastructures. The structure-mechanism-performance framework established herein provides valuable guidance for the development of next-generation multifunctional protective coatings.

在这项工作中，我们提出了一种强大的激光蚀刻辅助电沉积策略，用于在铝基板上构建机械耐用，防冰和耐腐蚀的超疏水涂层。在CTAB调控下，将激光刻蚀生成的精确图图化微孔阵列与肉豆酸铝和SiC纳米颗粒原位共沉积相结合，获得了高度均匀、界面附着力强的层次化微纳米结构。优化后的杂化涂层的水接触角为157.4°，表面粗糙度为16.586 μm，明显优于传统的电沉积涂层。机理分析表明，多尺度多孔结构与均匀分布的低表面能有机层协同稳定了Cassie-Baxter状态，增强了空气夹持，增强了屏障性能。因此，在1.3 kPa压力下，涂层在960 cm的磨损后仍保持超疏水性（比非激光处理表面提高了7倍），在- 15°C下，水滴冻结时间延长了8倍以上，在3.5 wt% NaCl溶液中，腐蚀电流密度降低了近4个数量级。这些优越的性能源于微孔阵列提供的机械保护与沉积疏水层的化学坚固性的耦合。这种可扩展且环保的方法有效地解决了传统超疏水涂层耐久性差和保护能力有限的长期挑战，为在恶劣工程环境（如航空航天、海洋和户外基础设施）中的大规模应用提供了一条有希望的途径。本文建立的结构-机理-性能框架为下一代多功能防护涂料的开发提供了有价值的指导。

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引用次数: 0

Polarization-Dependent Angular Memory Effect in Scattering Media: Mechanism and Field-of-View of Imaging Limit 散射介质中偏振光依赖性角记忆效应：机制与成像极限视场

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology

Pub Date : 2026-04-01 Epub Date: 2026-01-08 DOI: 10.1016/j.optlastec.2026.114664

Ping Wang , Runze Li , Tong Peng , Meiling Zhou , Yuan Zhou , Chen Bai , Dan Dan , Junwei Min , Cuiping Yao , Baoli Yao

The angular memory effect (AME) of scattering media is a prominent mechanism for imaging through turbid media. However, depolarization of light during propagation reduces both the AME range (AMER) and the speckle contrast, thereby constraining imaging performance. This study systematically investigated the polarization-dependent characteristics of the AME and its implications for the effective imaging field-of-view (FOV). First, for a layered scattering medium such as milk and chicken egg membranes with horizontal polarization incident light, the scattered photons with horizontal polarization hold larger AMER than that of the vertical ones, up to 54.1% higher in three layered milk. Moreover, the horizontal-polarized speckle pattern exhibits higher contrast relative to the full polarization state, which contributes to the improved quality of the reconstructed image. The image reconstruction experiments further validate that, owing to the two advantages, the horizontal-polarized scattered photons enable larger FOV recovery (about 2.9 times that of the vertical-polarized photons for a three-layer milk medium). This research reveals the polarization-resolved scattering process and the polarization-dependent AME in scattering media, which provide a practical approach to expanding the imaging FOV.

散射介质的角记忆效应（AME）是混浊介质成像的重要机制。然而，光在传播过程中的去极化降低了AME范围（AMER）和散斑对比度，从而限制了成像性能。本研究系统地研究了AME的偏振特性及其对有效成像视场（FOV）的影响。首先，在分层散射介质（如牛奶和鸡蛋膜）中，水平偏振入射光的散射光子比垂直偏振光子具有更大的AMER，在三层牛奶中最高可达54.1%。此外，水平偏振散斑模式相对于全偏振状态具有更高的对比度，这有助于提高重建图像的质量。图像重建实验进一步证实，由于这两个优点，水平偏振散射光子可以获得更大的视场恢复（对于三层牛奶介质，大约是垂直偏振光子的2.9倍）。该研究揭示了散射介质中偏振分辨散射过程和偏振相关AME，为扩大成像视场提供了一种实用的方法。

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引用次数: 0

Research on the rapid measurement of the three-dimensional refractive index profile of active optical fiber preforms based on regional reconstruction from a small number of holograms 基于少量全息图区域重建的有源光纤预制体三维折射率快速测量研究

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology

Pub Date : 2026-04-01 Epub Date: 2026-01-09 DOI: 10.1016/j.optlastec.2025.114581

Yuanji Qin , Sujuan Huang , Cheng Yan , Chunfeng Wu , Tingyun Wang

A rapid measurement method for three-dimensional (3D) refractive index (RI) of active optical fiber preforms is proposed based on regional reconstruction from a small number of holograms. Based on digital holographic microtomography, digital holograms containing information of optical fiber preforms are captured at sparse angles. The phase distribution of the preform is extracted via numerical reconstruction from a small number of holograms. The peak characteristic of the first-order derivative of the phase distribution is used as the basis for identifying the core region and cladding of the preform. Regional reconstruction approach is utilized to reconstruct the RI profile of the cross-section of the preform. For the core region, which contains rich structural details, the RI profile is reconstructed using the high-resolution phase distribution. In contrast, for the cladding, which has a relatively uniform RI profile, a compressed phase distribution is used for reconstruction. The 3D RI profile of the preform is obtained by integrating 2D RI profile from multiple cross-sections. Simulations validate the method’s feasibility and efficiency in region identification and RI reconstruction. Using Er³⁺-doped active preform as a sample to measure the RI profile, and the results are compared with P104 measurement for validation, the RI measurement accuracy reaching 2 × 10⁻⁴. This method not only maintains high accuracy in reconstruction but also significantly shortens reconstruction time, offering a highly efficient novel method for characterizing the 3D RI profile of active optical fiber preforms.

提出了一种基于少量全息图的区域重建的有源光纤预制棒三维折射率的快速测量方法。基于数字全息微层析成像技术，以稀疏角度捕获包含光纤预成形信息的数字全息图。通过对少量全息图的数值重建，提取了预制体的相位分布。利用相分布的一阶导数的峰值特性作为识别预制体芯区和包层的依据。采用区域重建方法重建预成形截面的RI剖面。对于包含丰富构造细节的核心区，利用高分辨率相位分布重建RI剖面。相比之下，对于具有相对均匀的RI剖面的包层，使用压缩相分布进行重建。通过对多个截面的二维RI曲线进行积分，得到预制体的三维RI曲线。仿真结果验证了该方法在区域识别和RI重建方面的可行性和有效性。以Er3+掺杂的有源预制件为样品测量了RI廓形，并将结果与P104测量结果进行了对比验证，其RI测量精度达到2 × 10−4。该方法不仅保持了较高的重建精度，而且显著缩短了重建时间，为有源光纤预制体的三维RI轮廓表征提供了一种高效的新方法。

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引用次数: 0

Silica-based low loss 80-channel arrayed waveguide grating at 2.0 μm wavelength band 2.0 μm波段硅基低损耗80通道阵列波导光栅

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology

Pub Date : 2026-04-01 Epub Date: 2026-01-06 DOI: 10.1016/j.optlastec.2025.114632

Junchi Ma , Bingli Sun , Liangliang Wang , Jun Chen , Liyong Guo , Song Huang , Hanming Yang , Yue Wang , Junming An , Yuanda Wu

The exponential growth of global data traffic has created an urgent demand for expanded communication bandwidth, necessitating the extension of optical fiber transmission windows beyond conventional C + L bands. The 2 µm waveband emerges as a promising solution for next-generation optical communications, offering both low transmission loss and an extended gain spectrum. As a critical component in dense wavelength division multiplexing systems, arrayed waveguide grating (AWG) performs essential wavelength (de)multiplexing functions. This work demonstrates an 80-channel AWG operating at the 2 µm waveband with 50 GHz channel spacing, fabricated on a 2.0 % refractive index contrast silica platform. The device achieves an insertion loss of 3.1 dB at the center channel, with a 1 dB bandwidth of 0.27 nm and crosstalk of −20.66 dB to adjacent channels. It also exhibits a polarization-dependent loss of 0.5 dB and maintains uniform performance across all channels under room-temperature operation.

全球数据流量的指数级增长产生了对扩展通信带宽的迫切需求，需要将光纤传输窗口扩展到传统的C + L波段之外。2 μ m波段是下一代光通信的一个有前途的解决方案，具有低传输损耗和扩展增益频谱。阵列波导光栅（AWG）作为密集波分复用系统的关键部件，具有重要的波分复用功能。这项工作展示了一个80通道AWG，工作在2µm波段，通道间距为50 GHz，在2.0%折射率对比二氧化硅平台上制造。该器件在中心通道的插入损耗为3.1 dB， 1 dB带宽为0.27 nm，相邻通道的串扰为−20.66 dB。它还表现出0.5 dB的极化相关损耗，并在室温操作下保持所有通道的均匀性能。

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引用次数: 0

Laser-electrolyte jet hybrid machining of macro–micro cross-scale V-grooves: methods, mechanisms and application 激光-电解液射流复合加工宏微交叉尺度v型槽：方法、机理及应用

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology

Pub Date : 2026-04-01 Epub Date: 2026-01-07 DOI: 10.1016/j.optlastec.2025.114599

Liqun Du , Ce Zhang , Dong Li , Xiaolong Han , Mingxin Yu , Pan Sun

Macro-micro cross-scale V-grooves on metal surfaces have garnered significant interest in diverse applications, including wetting, drag reduction, and heat dissipation. This paper proposes a novel laser-electrolyte jet hybrid machining (LEJHM) method, which integrates multiple energy fields and employs dynamic scanning with a nanosecond pulse laser for contour correction. The method can fabricate cross-scale V-grooves with widths ranging from 101 μm to 1.39 mm. Integrated simulations and experiments of LEJHM reveal that, compared to traditional nanosecond pulse laser machining, LEJHM increases machining depth and enhances surface quality for microscale V-grooves. Compared to traditional electrolyte jet machining (EJM), LEJHM improves machining localization for macroscale V-grooves. Increasing the laser energy density leads to greater V-groove depth and enhanced hydrophobicity of the arrayed V-groove surface. The fabricated arrayed V-grooves surface, with a width of 107 μm and a depth of 496 μm, exhibits superhydrophobicity (contact angle: 154.8°) and excellent corrosion resistance.

金属表面的宏观-微观跨尺度v型槽在各种应用中获得了极大的兴趣，包括润湿，减阻和散热。提出了一种新型的激光-电解液射流混合加工方法，该方法集成了多个能量场，利用纳秒脉冲激光动态扫描进行轮廓校正。该方法可加工宽度为101 μm ~ 1.39 mm的跨尺度v型槽。综合仿真和实验结果表明，与传统的纳秒脉冲激光加工相比，LEJHM增加了微尺度v型槽的加工深度，提高了表面质量。与传统的电解液射流加工（EJM）相比，LEJHM提高了大尺度v型槽的加工本地化。随着激光能量密度的增加，v型槽深度增大，v型槽表面疏水性增强。制备的v型槽表面宽度为107 μm，深度为496 μm，具有超疏水性（接触角为154.8°）和优异的耐腐蚀性。

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引用次数: 0

Research on surface quality and subsurface damage of sapphire microgroove etched by femtosecond laser-induced plasma-assisted ablation 飞秒激光诱导等离子体辅助烧蚀蓝宝石微槽表面质量及亚表面损伤研究

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology

Pub Date : 2026-04-01 Epub Date: 2026-01-11 DOI: 10.1016/j.optlastec.2026.114728

Pai Hu , Xizhao Lu , Bujin Li , Ningchang Wang , Binggong Yan , Gaofeng Zheng , Anna Jiang , Dazhong Wang , Rao Yao , Feng Jiang

Sapphire machining poses significant challenges due to its exceptional hardness, brittleness, and wear resistance, resulting in low surface processing quality. Femtosecond laser-induced plasma-assisted ablation (LIPAA) emerges as a promising solution for processing sapphire, yet its surface quality and subsurface damage remain underexplored. This study investigates the influence of crystal orientation, single-pulse energy, scanning speed, number of scans, and target-substrate distance on microgroove surface quality and obtains the order of priority. Experimental results reveal that femtosecond LIPAA processing is unaffected by sapphire anisotropy. Scanning speed predominantly governs microgroove depth-to-width ratio and surface roughness, while single-pulse energy dictates material removal rate. Notably, surface roughness exhibits an inverse correlation with removal rate and depth-to-width ratio. Parametric analysis identifies 90 μm as the optimal target-substrate distance, yielding maximal depth-to-width ratio, minimal surface thermal ablation marks, and sharp groove edges. Cross-sectional SEM/TEM characterization demonstrates minimal subsurface damage in femtosecond LIPAA: a thin recast layer, limited thermal ablation traces in the amorphous layer, dislocation-free basal slip regions, and undistorted crystalline lattices. These findings confirm that material removal in femtosecond LIPAA is dominated by plasma-mechanical bombardment, with thermal ablation playing a secondary role, achieving high-quality microgroove processing in sapphire surface.

由于蓝宝石具有特殊的硬度、脆性和耐磨性，导致其表面加工质量较低，因此对其加工提出了重大挑战。飞秒激光诱导等离子体辅助烧蚀（LIPAA）是一种很有前途的蓝宝石加工解决方案，但其表面质量和亚表面损伤仍未得到充分研究。本研究考察了晶体取向、单脉冲能量、扫描速度、扫描次数和靶基距离对微槽表面质量的影响，并得出了优先顺序。实验结果表明，飞秒LIPAA处理不受蓝宝石各向异性的影响。扫描速度主要决定微槽深宽比和表面粗糙度，而单脉冲能量决定材料去除率。值得注意的是，表面粗糙度与去除率和深宽比呈负相关。参数分析确定90 μm为最佳目标-衬底距离，产生最大的深度与宽度比，最小的表面热烧蚀痕迹和锋利的凹槽边缘。横截面SEM/TEM表征表明飞秒LIPAA的亚表面损伤最小：薄重铸层，非晶层中有限的热烧蚀痕迹，无位错的基底滑移区和未变形的晶格。这些发现证实，在飞秒LIPAA中，材料去除主要是等离子体机械轰击，热烧蚀起次要作用，从而在蓝宝石表面实现高质量的微槽加工。

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引用次数: 0

Spatiotemporal dynamics of TC4 titanium alloy surface plasma induced by femtosecond laser 飞秒激光诱导TC4钛合金表面等离子体的时空动力学

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology

Pub Date : 2026-04-01 Epub Date: 2026-01-11 DOI: 10.1016/j.optlastec.2026.114722

Wei Wei , Yuting Yang , Jindou Wu , Qijian Zhu , Xinyue Gao , Haixin Wu , Liming Lei , Hongchao Qiao , Yu Long

Femtosecond lasers have achieved significant progress in fabricating micro- and nanostructures on titanium alloy Ti-6Al-4V (TC4) surfaces. However, the dynamic evolution of TC4 plasma under femtosecond laser irradiation and its relationship with material surface ablation and microstructural changes have not been systematically investigated and require further exploration. In this study, we utilized a femtosecond laser ultrafast imaging system to examine the transient spatiotemporal evolution characteristics of plasma induced by single-pulse irradiation on the surface of TC4. The experimental results revealed that under high-power single-pulse irradiation (269 mW), a distinct plasma ejection phenomenon could be observed at the 3 ns time point, with the ejection scale of plasma ranging from 1 to 600 ps. Additionally, a material spatter zone was observed around the ablation crater, with spatter particles exhibiting a filamentous distribution. In contrast, such phenomena were not observed for TC4 plasma induced by low-power single-pulse irradiation (10 mW), although periodic surface structures were observed on the ablation crater surface. The evolution of femtosecond laser-induced TC4 plasma ejection phenomena on the picosecond timescale can be divided into four stages: formation; cavitation; rapid diffusion; and diffusion with cooling. The cavitation and rapid diffusion stages occur around 450 ps, providing crucial data for constructing relevant physical models. Moreover, this study provides important experimental evidence and theoretical support for the directional control of femtosecond lasers in material microstructure fabrication and the optimisation of process parameters.

飞秒激光在钛合金Ti-6Al-4V （TC4）表面制备微纳米结构方面取得了重大进展。然而，TC4等离子体在飞秒激光照射下的动态演化及其与材料表面烧蚀和微观结构变化的关系尚未得到系统研究，需要进一步探索。在本研究中，我们利用飞秒激光超快成像系统研究了TC4表面单脉冲辐照诱导等离子体的瞬态时空演化特征。实验结果表明，在高功率单脉冲（269 mW）照射下，在3 ns时间点可以观察到明显的等离子体喷射现象，等离子体喷射尺度在1 ~ 600 ps之间，并且在烧蚀坑周围观察到物质飞溅区，飞溅颗粒呈丝状分布。相比之下，低功率单脉冲辐照（10 mW）诱导的TC4等离子体没有观察到这种现象，尽管在烧蚀坑表面观察到周期性的表面结构。飞秒激光诱导TC4等离子体抛射现象在皮秒尺度上的演化可分为四个阶段：形成阶段；空化;快速扩散;扩散伴随着冷却。空化和快速扩散阶段发生在450ps左右，为构建相关物理模型提供了关键数据。为飞秒激光器在材料微结构制造中的定向控制和工艺参数的优化提供了重要的实验依据和理论支持。

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引用次数: 0

Polarization-insensitive all-optical light manipulation with 3D ridge-shaped monolayer graphene structure 三维脊状单层石墨烯结构的偏光不敏感全光操纵

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology

Pub Date : 2026-04-01 Epub Date: 2026-01-13 DOI: 10.1016/j.optlastec.2026.114690

Kedi Peng , Zongyang Cai , Jiafeng He , Quandong Huang

We propose a polarization-insensitive all-optical light manipulation optical device formed by using a three-dimensional (3D) ridge-shaped monolayer graphene structure. The proposed device breaks the polarization of light in planar graphene formed devices by regulating the graphene ridge geometry and carrier dynamics. In the design, the proposed device embeds a ridge-shaped monolayer graphene in a polymer waveguide core and utilizes the Pauli blocking effect to achieve optical modulation of arbitrary polarized input light. 980 nm control light excites graphene to generate electron-hole pairs, and the directional flow induces the band filling effect, which blocks the absorption of the 1550 nm signal light. When the power of control light is increased to break the threshold of absorption of signal light, the signal light loss decreases significantly, regardless of the state of polarization of the input light, with the modulation efficiency of about 70% ∼ 80%. The proposed chip shows a key breakthrough in light modulation regardless of the state of polarization and broadband operation, which provides a new solution for the next generation of optical modulation chips.

我们提出了一种使用三维（3D）脊状单层石墨烯结构形成的偏振不敏感的全光光操纵光学器件。该器件通过调节石墨烯脊几何形状和载流子动力学来打破平面石墨烯形成器件中的光偏振。在设计中，提出的器件在聚合物波导核心中嵌入脊状单层石墨烯，并利用泡利阻塞效应实现任意偏振输入光的光学调制。980 nm控制光激发石墨烯产生电子-空穴对，定向流动诱导带填充效应，阻碍了1550 nm信号光的吸收。当增加控制光的功率以突破信号光的吸收阈值时，无论输入光的偏振状态如何，信号光损失都显著降低，其调制效率约为70% ~ 80%。该芯片在不考虑偏振状态和宽带操作的光调制方面取得了关键突破，为下一代光调制芯片提供了新的解决方案。

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引用次数: 0