Time-resolved shadowgraphs and morphology analyses of aluminum ablation with multiple femtosecond laser pulses

Wu, Zhongkang; Zhang, Nan; Zhu, Xing; An, Liqun; Wang, Gangzhi; Tan, Ming

doi:10.1088/1674-1056/27/7/077901

Cited by 7 publications

(4 citation statements)

References 37 publications

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“…In the higher temperature region, the phase explosion mechanism exhibits high uncertainty in simulation results and experimental results. Unlike the simulation results, multiple femtosecond laser irradiations are used in the experiments to measure the ablation depth, which may change, [35] and the measurement equipment during the experiments may also affect the results. The reason for the error could also be that the loss of laser energy is neglected during the calculation of the theoretical values and that the energy reaching the sample surface is assumed to be equal for different substrate temperatures during the experiments.…”

Section: -4mentioning

confidence: 99%

Effect of sample temperature on femtosecond laser ablation of copper

Dang 党,

Chen 陈,

Chen 陈

et al. 2024

Chinese Phys. B

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In this work, we conducted an experimental study supported by theoretical analysis of single laser ablation of copper to investigate the interaction between laser and material at different sample temperatures, in order to predict the ablation morphology and lattice temperature changes. For investigating the effect of sample temperature on femtosecond laser processing, we conducted experiments and simulated the thermal behavior on femtosecond laser irradiation copper using a two-temperature model. The simulated results showed that both electron peak temperature and the relaxation time required reaching equilibrium increased as initial sample temperature raised. When the sample temperature grew from 300 K to 600 K, the maximum lattice temperature at the copper surface rose by about 6500 K under femtosecond laser irradiation, and the ablation depth increased by 20%. The simulated ablation depths followed the same general trend as the experimental values. This work provides some theoretical basis and technical support for the development of femtosecond laser processing in the field of metal materials.

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Section: -4mentioning

confidence: 99%

Effect of sample temperature on femtosecond laser ablation of copper

Dang 党,

Chen 陈,

Chen 陈

et al. 2024

Chinese Phys. B

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“…Micromachining. Besides characterizations of workpiece geometries, surface morphologies, microsctructures, and properties after laser micromachining, other important research approaches include in situ time-resolved observations and physics-based modeling to improve the understanding of laser micromachining processes [212][213][214][215][216][217][218][219][220][221][225][226][227][228][229][230][231][232][233][234][235][236][237][238][239].…”

Section: Research Approaches In the Study Of Lasermentioning

confidence: 99%

“…In situ time-resolved observations include direct imaging and shadowgraph imaging [213,216,[226][227][228]; the former often involves the use of an intensified charge-coupled device (ICCD) camera with short gate widths [216], while the latter typically uses a probe beam which is also often short-pulsed [213,[226][227][228]. These observations have revealed important physical processes that may occur during laser ablation.…”

Section: Research Approaches In the Study Of Lasermentioning

confidence: 99%

Overview of Laser Applications in Manufacturing and Materials Processing in Recent Years

Shin

Lei

et al. 2020

Journal of Manufacturing Science and Engineering

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Recent years have witnessed a rapid growth of the laser market. Figure 1 shows the recent revenues of laser sales with about 50% increase in revenue over recent four years , which far exceeds the growth of other industrial sectors. More than one third of this revenue belongs to the category of laser materials processing arena. Undoubtedly, lasers have been playing increasingly important roles in various industrial manufacturing sectors. This article is to capture some of important developments in the rapidly growing areas of laser-based manufacturing and materials processing and also describe important technological issues pertaining to various laser-based manufacturing processes. The topics to be covered in this paper include more popularly used processes in industry such as laser additive manufacturing, laser-assisted machining, laser micromachining, laser forming, laser surface texturing, laser welding, and laser shock peening, although there are several additional areas of laser applications. In each section, a brief overview of the process is provided, followed by critical issues in implementing the process, such as properties, predictive modeling, and process monitoring, and finally some remarks on future issues that can guide researchers and practitioners.

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“…A high-energy laser beam is focused onto the target surface to produce plasma, and then plasma creates the emission spectrum: this emission spectrum is used to analyze the element composition. [6][7][8][9] In recent years, the LIBS has achieved dramatic development and received much attention due to its practical applications such as in environmental monitoring, biological agents, and aerosol testing. More importantly, the high efficacy, nonintrusiveness, and real-time analysis make it extensively employed for detecting the sample composition.…”

Section: Introductionmentioning

confidence: 99%

Influence of polarization of laser beam on emission intensity of femtosecond laser-induced breakdown spectroscopy*

Yang

Liu

et al. 2020

Chinese Phys. B

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Laser-induced breakdown spectroscopy (LIBS) is an important technique which is widely used to analyze element composition. In order to improve the sensitivity of LIBS, much effort has been made to enhance the spectral intensity of LIBS by proposing a number of methods. In addition, we find that laser polarization has great influence on the emission intensity of femtosecond LIBS. By comparing the emission intensity of femtosecond LIBS in the circular polarization with that in the linear polarization, the spectral intensity in the case of circular polarization is stronger than that in the case of linear polarization. Moreover, this phenomenon is more obvious as laser energy increases. The polarization plays an important role in LIBS signal intensity. Based on the observation, the enhanced mechanism of the laser polarization for the spectral intensity is discussed in this paper, which will be helpful in spectral analysis and component analysis.

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Time-resolved shadowgraphs and morphology analyses of aluminum ablation with multiple femtosecond laser pulses

Cited by 7 publications

References 37 publications

Effect of sample temperature on femtosecond laser ablation of copper

Effect of sample temperature on femtosecond laser ablation of copper

Overview of Laser Applications in Manufacturing and Materials Processing in Recent Years

Influence of polarization of laser beam on emission intensity of femtosecond laser-induced breakdown spectroscopy*

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