Optimization of ultrafast axial scanning parameters for efficient pulsed laser micro-machining

Du, Xiaohan; Kang, Sun-Kyung; Arnold, Craig B.

doi:10.1016/j.jmatprotec.2020.116850

Cited by 9 publications

(12 citation statements)

References 22 publications

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“…In the second group, the time-dependent structured profiles consist of a rapid modification to the beam intensity profile, its propagation, or its interaction dynamics with matter. As an example of these profiles, the use of a tunable acoustic gradient of index (TAG) lens in a regular direct-laser writing system can induce rapidly varying intensity profiles over extended axial ranges, providing axially longer working distances compared with traditionally focused Gaussian beams at operational oscillation frequencies over ~140 KHz [14]. The rapidly changing properties of the beam in time enables the use of these types of complex beams in advanced materials processing applications, as we will develop further in Sect.…”

Section: Structured Light: Beyond Gaussian Beamsmentioning

confidence: 99%

“…The use of this type of lens presents advantages for the processing of materials, since it is possible to dynamically displace the intensity distribution along the beam axis over longer distances compared with regular direct writing systems. Therefore, it is possible to modify samples without the need of sample repositioning [14,17]. Figure 8.18 shows the intensity distribution for a nanosecond laser-marking system that implements a regular marking system and one that incorporates a TAG lens.…”

Section: Resonant Focal Scanningmentioning

confidence: 99%

“…For all the other cases, the frequency mismatch will ensure that a pulse reaches the sample at different locations for each pulse interacting with the surface. Figure 8.19b shows an irradiation experiment in a cube of borosilicate glass using the same laser repetition rate (1000 Hz) and different TAG lens operating frequencies [14]. Here, the sample is scanned at the same speed laterally, and the images are acquired from a lateral perspective.…”

Section: Resonant Focal Scanningmentioning

confidence: 99%

See 2 more Smart Citations

Probing Light by Matter: Implications of Complex Illumination on Ultrafast Nanostructuring

Florian

Du²,

Arnold³

2023

Springer Series in Optical Sciences

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Pushing the limits of precision and reproducibility in ultrafast laser-based nanostructuring requires detailed control over the properties of the illumination. Most traditional methods of laser-based manufacturing rely on the simplicity of Gaussian beams for their well-understood propagation behavior and ease of generation. However, a variety of benefits can be obtained by moving beyond Gaussian beams to single or multiple tailored beams working toward optimal spatial and temporal control over the beam profiles. In this chapter, we center our attention on methods to generate and manipulate complex light beams and the resulting material interactions that occur in response to irradiations with these non-traditional sources. We begin with a discussion on the main differences between Gaussian and more complex light profiles, describing the mechanisms of phase and spatial control before narrowing the discussion to approaches for spatial structuring associated with materials processing with ultrashort laser pulses. Such structuring can occur in both far-field propagating architectures, considering rapidly varying spatial profiles generated mechanically or optically, as well as near-field, non-propagating beams associated with plasmonic and dielectric systems. This chapter emphasizes some of the unique abilities of complex light to shape materials at the nanoscale from a fundamental perspective while referencing potential applications of such methods.

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Section: Structured Light: Beyond Gaussian Beamsmentioning

confidence: 99%

Section: Resonant Focal Scanningmentioning

confidence: 99%

Section: Resonant Focal Scanningmentioning

confidence: 99%

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Probing Light by Matter: Implications of Complex Illumination on Ultrafast Nanostructuring

Florian

Du²,

Arnold³

2023

Springer Series in Optical Sciences

Self Cite

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“…High frequency of monochromatic light falls on the surface, heats, melts, and vaporizes the materials. LBM is a versatile process that can shape a broad range of materials such as And different types of laser machining systems have been applied for these varieties of materials where complex shapes demand precise, fast, and force-free processing [68,69]. For example, a CO 2 -based laser beam has been attempted to analyze the effects of process parameters on the surface performance of the titanium alloy [70].…”

Section: Nanomachiningmentioning

confidence: 99%

Review on 3D Fabrication at Nanoscale

Wang

Cai-xin

et al. 2022

AUTEX Research Journal

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Among the different nanostructures that have been demonstrated as promising materials for various applications, three–dimensional (3D) nanostructures have attracted significant attention as building blocks for constructing high-performance nanodevices because of their unusual mechanical, electrical, thermal, optical, and magnetic properties arising from their novel size effects and abundant active catalytic/reactive sites due to the high specific surface area. Considerable research efforts have been devoted to designing, fabricating, and evaluating 3D nanostructures for applications, including structural composites, electronics, photonics, biomedical engineering, and energy. This review provides an overview of the nanofabrication strategies that have been developed to fabricate 3D functional architectures with exquisite control over their morphology at the nanoscale. The pros and cons of the typical synthetic methods and experimental protocols are reviewed and outlined. Future challenges of fabrication of 3D nanostructured materials are also discussed to further advance current nanoscience and nanotechnology.

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“…The precise positioning of the focal spot is critical when focusing a laser beam onto a section for high-quality ablations. Although tight focusing can obtain a submicron-sized spot, it is accompanied by a narrow depth of focus (DOF), which will significantly reduce the ablation efficiency outside the DOF, especially for sections with uneven surfaces [ 10 , 13 ]. The most direct solution is to refocus the surface by translating the sample-holding mechanical stage for every step [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Laser axial scanning microdissection for high-efficiency dissection from uneven biological samples

Yang,

Ji,

Luo

et al. 2024

Biomed. Opt. Express

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Fast and efficient separation of target samples is crucial for the application of laser-assisted microdissection in the molecular biology research field. Herein, we developed a laser axial scanning microdissection (LASM) system with an 8.6 times extended depth of focus by using an electrically tunable lens. We showed that the ablation quality of silicon wafers at different depths became homogenous after using our system. More importantly, for those uneven biological tissue sections within a height difference of no more than 19.2 µm, we have demonstrated that the targets with a size of microns at arbitrary positions can be dissected efficiently without additional focusing and dissection operations. Besides, dissection experiments on various biological samples with different embedding methods, which were widely adopted in biological experiments, also have shown the feasibility of our system.

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Optimization of ultrafast axial scanning parameters for efficient pulsed laser micro-machining

Cited by 9 publications

References 22 publications

Probing Light by Matter: Implications of Complex Illumination on Ultrafast Nanostructuring

Probing Light by Matter: Implications of Complex Illumination on Ultrafast Nanostructuring

Review on 3D Fabrication at Nanoscale

Laser axial scanning microdissection for high-efficiency dissection from uneven biological samples

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