Optics and Laser Technology最新文献_第6页

Laser-driven acceleration of super-heavy ions: towards the production of high-quality high-energy uranium ion beams 激光驱动的超重离子加速：朝着生产高质量高能铀离子束的方向发展

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology

Pub Date : 2026-02-06 DOI: 10.1016/j.optlastec.2025.114598

Jarosław Domański, Jan Badziak

Super-heavy ion beams with ion energies ranging from multi-GeV to multi-TeV are a fundamental research tool in nuclear physics and high-energy density physics and are currently being produced in large RF-driven accelerators. Recent advances in high-peak-power laser technology and the development of multi-PW lasers have opened the prospect of producing such beams in much less complex and smaller laser-driven accelerators. In this paper, the feasibility of producing high-energy super-heavy ion beams by a multi-PW femtosecond laser and the properties of these beams are investigated numerically using an advanced particle-in-cell code. The studies were carried out for laser pulses of intensity ∼ (0.25–3) × 10²³ W/cm² interacting with a sub-micrometre uranium target. They demonstrated that the multi-PW laser can produce high-energy (up to 300 GeV) uranium ion beams with intensities (∼10²⁰ W/cm²) and durations (<1 ps) unattainable in conventional accelerators. The ion beam parameters can be controlled by various laser and target parameters but also by the ion beam width in the paraxial region. It was found that a paraxial ion beam with a width comparable to the laser focal spot size is a well-collimated, highly mono-charged and spatially homogeneous beam and is composed of ions with the highest energies. Improving the paraxial beam parameters is possible by reducing the target thickness and increasing the focal spot size, but primarily by increasing the laser intensity. However, increasing the intensity leads to increased radiative losses, which significantly limits the possibility of producing super-heavy ions with TeV energies.

离子能量从多gev到多tev的超重离子束是核物理和高能密度物理的基础研究工具，目前正在大型rf驱动加速器中产生。高峰值功率激光技术的最新进展和多pw激光器的发展为在更不复杂和更小的激光驱动加速器中产生这种光束开辟了前景。本文利用先进的粒子池码，研究了多pw飞秒激光器产生高能超重离子束的可行性，并对超重离子束的特性进行了数值模拟。研究是用强度为~ （0.25-3）× 1023 W/cm2的激光脉冲与亚微米铀靶相互作用进行的。他们证明了多pw激光器可以产生高能（高达300 GeV）铀离子束，其强度（~ 1020 W/cm2）和持续时间（<1 ps）是传统加速器无法实现的。离子束参数可以由各种激光和目标参数控制，也可以由近轴区域的离子束宽度控制。研究发现，宽度与激光焦点光斑大小相当的近轴离子束准直良好，具有高度的单电荷和空间均匀性，是由能量最高的离子组成的光束。通过减小目标厚度和增大焦点光斑尺寸可以改善近轴光束参数，但主要是通过增加激光强度来改善。然而，增加辐射强度会导致辐射损失增加，这极大地限制了产生TeV能量的超重离子的可能性。

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引用次数: 0

The mechanism of UV-induced efficient chemical reaction rate and processing efficiency in photochemical mechanical polishing of yttrium aluminum garnet 紫外诱导钇铝石榴石光化学机械抛光中高效化学反应速率和加工效率的机理

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology

Pub Date : 2026-02-06 DOI: 10.1016/j.optlastec.2026.114898

Xingchen Guo, Zhigang Dong, Renke Kang, Shang Gao

The surface quality of yttrium aluminum garnet (YAG) can directly affect its damage threshold. Photochemical mechanical polishing (PCMP) is a promising method to improve the processing efficiency of YAG. However, the mechanism by which UV affects processing efficiency is unclear. This paper comprehensively investigates the mechanism by which UV affects the chemical reaction rate and processing efficiency in PCMP of YAG. The effects of factors on surface roughness, morphology, and material removal rate were analyzed through a series of experiments. The chemical reaction rate was characterized by oxidation–reduction potential (ORP). Theoretically, the optimal parameters were obtained by investigating UV distribution characteristics and their effective irradiation region. The results indicate that increasing the UV intensity and irradiation area can promote processing efficiency. Under optimal conditions, the material removal rate can be increased by 29%, and the surface roughness can be decreased by 37%, resulting in a smoother surface. The above findings provide a new approach and theoretical basis for further enhancing the processing performance of PCMP.

钇铝石榴石（YAG）的表面质量直接影响其损伤阈值。光化学机械抛光（PCMP）是一种很有前途的提高YAG加工效率的方法。然而，紫外线影响加工效率的机制尚不清楚。本文全面探讨了紫外光对YAG的PCMP化学反应速率和加工效率的影响机理。通过一系列实验分析了各因素对表面粗糙度、形貌和材料去除率的影响。化学反应速率用氧化还原电位（ORP）表征。理论上，通过研究紫外分布特性及其有效照射区域，得到了最佳参数。结果表明，增加紫外强度和辐照面积可以提高加工效率。在最佳条件下，材料去除率可提高29%，表面粗糙度可降低37%，表面更光滑。上述研究结果为进一步提高PCMP的处理性能提供了新的途径和理论依据。

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引用次数: 0

Effect of process parameters on the dimension and morphology of laser cladded WC-Ni composite coatings prepared by picosecond laser surface texturing 工艺参数对皮秒激光表面织构制备WC-Ni复合涂层尺寸和形貌的影响

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology

Pub Date : 2026-02-06 DOI: 10.1016/j.optlastec.2026.114874

Guangpei Lin , Guangyuan Yu , Zhaobing Cai , Le Gu , Zhen Dong , Peng Zhang , Qiwei Wang , Jun Wang , Xingchen Yan , Bingwen Lu

This study employs picosecond ultrafast lasers to prepare laser surface textures (LST) on WC-Ni composite coatings prepared by laser cladding. It systematically investigates the effects of laser power and scanning speed on texture morphology, dimensional characteristics, and ablation mechanisms. Furthermore, the improvement of coating tribological properties by LST was evaluated. The results indicate that texture diameter and depth increase with higher laser power but decrease with faster scanning speed, and the longitudinal dimensions (depth) exhibiting greater sensitivity to parameter variations. By combining response surface methodology (RSM) and ablation simulation reveals that texture morphology can be precisely controlled by adjusting power and scanning speed, and the scanning speed significantly affects dimensional characteristics. The material removal mechanism is primarily dominated by phase explosion-induced vaporization, accompanied by plasma plume ejection. Morphological analysis reveals that the original phase structure of the coating can be preserved while effectively removing material under complete ablation conditions, and nanoscale features can be induced. Tribological testing indicates that compared to the untextured coating (LST-0), the textured coating (LST-5) prepared using optimized parameters exhibits a reduction of approximately 21.5% in the average coefficient of friction and 34% in the wear rate under large loads. This is primarily attributed to the textured pits capturing wear debris to form a stable solid lubrication layer, while effectively isolating hard particles, significantly suppressing three-body wear. This study provides a systematic theoretical basis and process window for picosecond laser surface texturing of metal-ceramic composite coatings, confirming its effectiveness and application potential in enhancing wear resistance.

本研究利用皮秒超快激光在激光熔覆制备的WC-Ni复合涂层上制备激光表面织构（LST）。系统地研究了激光功率和扫描速度对织构形貌、尺寸特征和烧蚀机理的影响。并对LST对涂层摩擦学性能的改善进行了评价。结果表明：激光功率越大，织构直径和深度越大，扫描速度越快，织构深度越小；纵向尺寸（深度）对参数变化的敏感性越强；将响应面法（RSM）与烧蚀模拟相结合，发现可以通过调节功率和扫描速度来精确控制纹理形态，并且扫描速度对尺寸特性有显著影响。材料的去除机制主要以相爆汽化为主，并伴有等离子体羽流喷射。形貌分析表明，在完全烧蚀条件下，涂层在有效去除材料的同时仍能保持原有的相结构，并能诱导出纳米尺度的特征。摩擦学测试表明，与无织构涂层（LST-0）相比，使用优化参数制备的织构涂层（LST-5）在大载荷下的平均摩擦系数降低了约21.5%，磨损率降低了34%。这主要是由于织构凹坑捕获磨损碎屑形成稳定的固体润滑层，同时有效隔离硬颗粒，显著抑制三体磨损。本研究为皮秒激光表面织构金属陶瓷复合涂层提供了系统的理论基础和工艺窗口，证实了其在增强耐磨性方面的有效性和应用潜力。

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引用次数: 0

Fabrication and performance study of subwavelength metallic grating via nanoimprint lithography 纳米压印法制备亚波长金属光栅及其性能研究

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology

Pub Date : 2026-02-06 DOI: 10.1016/j.optlastec.2026.114873

Yan Gu , Yingao Xue , Jieqiong Lin , Yuanshuo Liu , Yamei Liu , Kepeng Sui , Silin Liu , Hongxin Guo , Weidong Zhou , Lingling Han , Bin Wang

Subwavelength metallic gratings exhibit significant application potential due to their superior polarization characteristics and high structural stability, highlighting the urgent need for an efficient and cost-effective fabrication method. This study proposes, for the first time, a vibration-assisted nanoimprinting approach to fabricate subwavelength metallic gratings, achieving high-quality structures with outstanding polarization performance in the visible spectrum. A mathematical model was developed to analyze the effect of normal vibration on photoresist filling, providing insights into the underlying mechanism of enhanced filling efficiency. Numerical simulations were conducted to evaluate the influence of metallic materials and structural parameters on polarization performance. To implement this concept, a non-resonant vibration device was designed, and a vibration-assisted nanoimprint system was constructed to introduce normal vibration during the imprinting process. The effectiveness of vibration application was verified through vibration-assisted nanoimprinting experiments, in which the average width of the dielectric grating increased from 115 nm to 120 nm (a 4% improvement), and the average height increased from 118 nm to 136 nm (a 12% enhancement). Subwavelength metallic gratings were subsequently fabricated via a coating process and subjected to detailed performance characterization. When the incident angle varied within ± 30°, the average TM-wave transmittance exceeded 40.45%, while the average extinction ratio reached 21.3 dB. Across the visible spectrum, the TM wave showed an average transmittance of 45.41% and an extinction ratio of 20.39 dB, demonstrating excellent polarization performance. These findings confirm that vibration-assisted nanoimprinting is a promising and efficient technique for fabricating subwavelength metallic gratings.

亚波长金属光栅由于其优越的偏振特性和较高的结构稳定性，显示出巨大的应用潜力，迫切需要一种高效、经济的制造方法。本研究首次提出了一种振动辅助纳米印迹方法来制造亚波长金属光栅，在可见光谱中获得了具有出色偏振性能的高质量结构。建立了一个数学模型，分析了正常振动对光刻胶填充的影响，为提高填充效率的潜在机制提供了见解。通过数值模拟研究了金属材料和结构参数对极化性能的影响。为了实现这一概念，设计了一种非共振振动装置，并构建了振动辅助纳米压印系统，在压印过程中引入正常振动。通过振动辅助纳米印迹实验验证了振动应用的有效性，其中介质光栅的平均宽度从115 nm增加到120 nm（提高了4%），平均高度从118 nm增加到136 nm（提高了12%）。亚波长金属光栅随后通过涂层工艺制造，并进行了详细的性能表征。入射角在±30°范围内变化时，平均透射率超过40.45%，平均消光比达到21.3 dB。在可见光光谱上，TM波的平均透过率为45.41%，消光比为20.39 dB，具有良好的偏振性能。这些发现证实了振动辅助纳米印迹技术是一种很有前途的高效亚波长金属光栅制造技术。

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引用次数: 0

Ablation characteristics and material removal mechanism of Invar 36 alloy under femtosecond laser irradiation 飞秒激光辐照下Invar 36合金的烧蚀特性及材料去除机理

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology

Pub Date : 2026-02-06 DOI: 10.1016/j.optlastec.2026.114878

Zhenda Wang , Xiaohong Lu , Yuhang Tian , Hao Wang , Steven Y. Liang

To investigate the material removal mechanism in femtosecond laser processing of Invar 36 alloy, this paper establishes a coupled fluid–solid simulation model based on multiphysics coupling and multiscale effects. The validity of the simulation model is also verified. Using the established model, the competitive mechanisms among explosive vaporization, molten material ejection, and phase explosion during femtosecond laser ablation of Invar 36 alloy are investigated in depth. Meanwhile, the formation mechanism of laser-induced periodic surface structures (LIPSS) and the distribution characteristics of the ablation plume are analyzed. This study on the material removal mechanism in femtosecond laser processing of Invar 36 alloy provides a theoretical basis for subsequent high-quality processing of Invar 36 alloy.

为了研究飞秒激光加工Invar 36合金的材料去除机理，建立了基于多物理场耦合和多尺度效应的流固耦合仿真模型。验证了仿真模型的有效性。利用所建立的模型，对Invar 36合金飞秒激光烧蚀过程中炸药汽化、熔融物质喷射和相爆炸的竞争机理进行了深入研究。同时，分析了激光诱导周期表面结构（LIPSS）的形成机理和烧蚀羽流的分布特征。对Invar 36合金飞秒激光加工中材料去除机理的研究，为后续Invar 36合金的高质量加工提供了理论依据。

引用次数: 0

Deep learning enabled single-shot 3D measurement for colorful object in fringe projection profilometry 深度学习实现了条纹投影轮廓术中彩色物体的单镜头3D测量

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology

Pub Date : 2026-02-06 DOI: 10.1016/j.optlastec.2026.114895

Junyi Lin, Yupeng Li, Qi Dou, Changbiao Huang, Hua Liu, Ping Lu

The composite fringe projection profilometry based on deep learning has successfully achieved high efficiency and accuracy in single-shot 3D reconstruction. However, high-quality 3D measurement for colorful objects remains a challenging task in this field. Wrapped phase jumps and phase period ambiguity caused by color are the main reasons for the challenges. To solve these problems, this paper proposes an anti-color interference single-shot 3D reconstruction method (AIS3DRM) based on Haar-like composite fringe projection (HCFP) and dual-context scale-aware network (DCSA-Net), which utilizes HCFP to better reduce the phase jump and effectively avoid the phase period ambiguity in the colorful object measurement domain, and DCSA-Net to restore the non-ideal fringe patterns caused by color mutation. The deep-learning-enabled HCFP profilometry (DHCFPP) method is adopted to implement the three-frequency four-step phase-shifting method (TFPM) efficiently and accurately. DCSA-Net is an architecture based on U-Net, which integrates Spatial Frequency Fusion Attention Blocks (SFFABs) and an Adversarial Training Framework (ATF). SFFABs dynamically weight features through parallel branches to ensure robust performance under different object color conditions. ATF further optimizes the loss function by comparing the up-sampled output with real data. Our experimental results demonstrate that the proposed method outperforms existing methods in terms of the quality of the generated phase and the integrity of the point cloud for colorful object measurement.

基于深度学习的复合条纹投影轮廓术在单镜头三维重建中取得了较高的效率和精度。然而，彩色物体的高质量三维测量仍然是该领域的一项具有挑战性的任务。包裹相位跳跃和由颜色引起的相位周期模糊是造成挑战的主要原因。针对这些问题，本文提出了一种基于haar样复合条纹投影（HCFP）和双上下文尺度感知网络（DCSA-Net）的抗颜色干扰单镜头三维重建方法（AIS3DRM），该方法利用HCFP更好地减少了彩色物体测量域中的相位跳变，有效避免了相位周期模糊，利用DCSA-Net恢复了颜色突变引起的非理想条纹图案。采用基于深度学习的HCFP轮廓术（DHCFPP）方法，高效、准确地实现了三频四步移相法（TFPM）。DCSA-Net是一种基于U-Net的体系结构，它集成了空间频率融合注意块（SFFABs）和对抗性训练框架（ATF）。SFFABs通过并行分支动态加权特征，保证了在不同物体颜色条件下的鲁棒性能。ATF通过将上采样输出与实际数据进行比较，进一步优化损失函数。实验结果表明，该方法在生成相位的质量和彩色物体测量点云的完整性方面优于现有方法。

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引用次数: 0

Simplified Kerr refractive index measurement in the visible range using phase object contrast imaging 使用相位物体对比成像在可见范围内简化克尔折射率测量

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology

Pub Date : 2026-02-06 DOI: 10.1016/j.optlastec.2026.114888

Georges Boudebs , Julien-Bilal Zinoune , Christophe Cassagne , Mihaela Chis

A streamlined method is presented for determining the nonlinear refractive index

n_{2}

using phase objects embedded in an optical imaging configuration. The approach is particularly well suited to broadband sources such as tunable optical parametric amplifiers (OPAs), which typically exhibit non-Gaussian spatial profiles and femtosecond pulses with wavelength-dependent duration. Conventional techniques such as Z-scan require precise knowledge of intensity, pulse duration, beam waist and sample position, parameters that are difficult to control in OPA-based systems. The proposed method overcomes these constraints through a two-shot comparative measurement between a reference material (e.g., fused silica) and the sample, eliminating the need for translation stages, autocorrelation diagnostics and detailed beam characterization. By referencing the nonlinear phase shift to a well-known material, the technique removes scanning and intensity-calibration requirements, ensuring broad applicability across wavelengths and sample types. Theoretical modeling and experimental validation demonstrate high sensitivity together with a substantial reduction in experimental complexity. Results show excellent agreement with established methods, confirming the reliability of the approach. This work provides a rapid and efficient route for characterizing nonlinear optical properties in situations where conventional techniques are impractical. Supplementary Materials include data-processing scripts and numerical resources to facilitate implementation and reproducibility.

提出了一种简化的方法来确定非线性折射率n2使用相位对象嵌入在一个光学成像配置。该方法特别适用于宽带光源，如可调谐光参量放大器（OPAs），它们通常表现出非高斯空间分布和波长相关持续时间的飞秒脉冲。传统的技术，如z扫描，需要精确的强度，脉冲持续时间，束腰和样品位置的知识，在基于opa的系统中难以控制的参数。该方法通过在参考材料（如熔融二氧化硅）和样品之间进行两次对比测量来克服这些限制，消除了平移阶段、自相关诊断和详细的光束表征的需要。通过参考一种众所周知的材料的非线性相移，该技术消除了扫描和强度校准要求，确保了跨波长和样品类型的广泛适用性。理论建模和实验验证表明，该方法具有较高的灵敏度，同时大大降低了实验复杂度。结果表明，该方法与已有方法非常吻合，证实了该方法的可靠性。这项工作为在传统技术无法实现的情况下表征非线性光学特性提供了一种快速有效的途径。补充材料包括数据处理脚本和数字资源，以促进实施和再现性。

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引用次数: 0

Femtosecond vortices generated from a distributed Kerr-lens mode-locked Hermite-Gaussian thin-disk oscillator with a defective mirror 带有缺陷反射镜的分布式克尔透镜锁模厄米高斯薄盘振荡器产生的飞秒涡旋

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology

Pub Date : 2026-02-06 DOI: 10.1016/j.optlastec.2026.114901

Guichun Xia , Xu Liu , Ping Wang , Shiya Yang , Jingjie Hao , Qingzhe Cui , Lin Zheng , Lisong Yan , Heyan Liu , Jinwei Zhang

Mode-locked thin-disk oscillators operating on high-order transverse modes serve as excellent platforms for generating femtosecond optical vortices, offering high average power and robust propagation stability. In this work, we propose a distributed Kerr-lens mode-locking mechanism implemented in a high-power femtosecond thin-disk oscillator operating on high-order modes, which effectively compresses the output pulse duration. The oscillator directly produces 158-fs Hermite-Gaussian pulses with an average power of 7.2 W at a repetition rate of 104 MHz. These pulses are subsequently converted into Laguerre-Gaussian beams using a cylindrical lens mode converter. The successful demonstration of distributed Kerr-lens mode locking confirms the applicability of this technique to high-order transverse modes, offering a new pathway toward high-power, short-pulse thin-disk oscillators operating on such modes.

在高阶横向模式下工作的锁模薄盘振荡器是产生飞秒光学涡流的良好平台，具有高平均功率和强大的传播稳定性。在这项工作中，我们提出了一种分布式克尔透镜锁模机制，实现在高阶模式下的高功率飞秒薄盘振荡器中，有效地压缩了输出脉冲持续时间。该振荡器直接产生158fs的厄米高斯脉冲，平均功率为7.2 W，重复频率为104 MHz。这些脉冲随后被转换成拉盖尔-高斯光束使用圆柱透镜模式转换器。分布式克尔透镜锁模的成功演示证实了该技术在高阶横向模上的适用性，为在这种模式上工作的高功率、短脉冲薄盘振荡器提供了一条新的途径。

引用次数: 0

Controllable bistability in dual-fiber optical trap in air 空气中双光纤阱的可控双稳性

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology

Pub Date : 2026-02-06 DOI: 10.1016/j.optlastec.2026.114869

Aoxi Chen , Xinlin Chen , Siyuan Rao , Hui An , Yingying Song , Tengfang Kuang , Wei Xiong , Xiang Han , Zhongqi Tan , Guangzong Xiao , Hui Luo

The dual-fiber optical trap, owing to its high sensitivity and facile miniaturization, holds significant practical application value in fields such as high-precision metrology of mechanical quantities and biological manipulation. The positional stability of the trapped particle is pivotal to system performance, directly setting the measurement noise floor and operational precision. In this work, we observed bistability and hysteresis in the axial equilibrium position of a 10-μm diameter SiO₂ microsphere. This bistability arises from optical interference between the fiber ends and the microsphere, creating multiple potential wells. Experimental results demonstrated that the microsphere’s transition rate can be effectively modulated through precise control of the trapping laser power. Furthermore, the incorporation of transverse misalignment effectively eliminated bistability, thereby substantially improving positional stability throughout the entire optical trapping region. This suppression successfully reduced the system’s residual positional uncertainty to the thermal noise limit. Consequently, this research enhances the precision of microparticle manipulation and the sensitivity of sensing in dual-fiber optical trap systems.

双光纤阱具有灵敏度高、易于小型化等特点，在高精度机械量计量和生物操作等领域具有重要的实际应用价值。捕获粒子的位置稳定性对系统性能至关重要，直接决定了测量噪声底限和操作精度。在本研究中，我们观察到了直径为10 μm的SiO2微球在轴向平衡位置的双稳性和迟滞性。这种双稳性源于光纤端部和微球之间的光干涉，产生了多个势阱。实验结果表明，通过对捕获激光功率的精确控制，可以有效地调制微球的跃迁速率。此外，横向失调的加入有效地消除了双稳性，从而大大提高了整个光捕获区域的位置稳定性。这种抑制成功地将系统的残余位置不确定性降低到热噪声极限。因此，本研究提高了双光纤阱系统中微粒操纵的精度和传感的灵敏度。

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引用次数: 0

Performance evaluation of 2.5D C/SiC composite by chemical micro fluid assisted laser induced plasma micro-drilling 化学微流体辅助激光诱导等离子体微钻2.5D C/SiC复合材料性能评价

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology

Pub Date : 2026-02-06 DOI: 10.1016/j.optlastec.2026.114897

Junwei Yan , Jingyuan Xu , Bo Hao , Yi Xu , Li Zhang

The exceptional mechanical properties and high-temperature resistance of 2.5D carbon fiber reinforced silicon carbide ceramic matrix composites (C/SiC) have demonstrated a wide range of potential applications in the field of aero engine turbine blades. In response to issues such as the appearance of a large heat-affected zone (HAZ) during laser-induced ablation (LIA) and the formation of oxides that cause significant taper in micro holes. This paper presents a chemical micro fluid assisted laser induced plasma micro-drilling method to improve taper and HAZ. The surface quality, thickness of the HAZ, taper, surface chemical composition, and mechanical properties of the micro holes processed by two varieties of micro fluid, NaOH and HF, were comprehensively analyzed. The findings indicate that the HF micro fluid assisted laser induced plasma micro-drilling procedure offers substantial benefits. In comparison to LIA, the HAZ’s thickness is reduced by 78.12%-80.46%, the taper is reduced by 45.71%-46.36%, the average tensile strength in high-temperature environments increased by 5.81%, and the equivalent strain distribution was also more uniform. The micro holes’ edges are regular, and the sidewall surface is smooth. This study provides a new method for 2.5D C/SiC micro hole processing and new ideas for improving the quality of laser processing.

2.5D碳纤维增强碳化硅陶瓷基复合材料（C/SiC）具有优异的力学性能和耐高温性能，在航空发动机涡轮叶片领域具有广泛的应用前景。针对激光诱导烧蚀（LIA）过程中出现的大热影响区（HAZ）以及导致微孔显着锥度的氧化物的形成等问题。提出了一种化学微流体辅助激光诱导等离子体微钻孔方法，以改善锥度和热影响区。综合分析了NaOH和HF两种微流体加工微孔的表面质量、热影响区厚度、锥度、表面化学成分和力学性能。研究结果表明，高频微流体辅助激光诱导等离子体微钻工艺具有显著的优势。与LIA相比，热影响区厚度减小了78.12% ~ 80.46%，锥度减小了45.71% ~ 46.36%，高温环境下的平均抗拉强度提高了5.81%，等效应变分布也更加均匀。微孔边缘整齐，侧壁光滑。本研究为2.5D C/SiC微孔加工提供了新方法，为提高激光加工质量提供了新思路。

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引用次数: 0