High energy femtosecond laser micromachining with hollow core photonic crystal fiber delivery

Li, Feng; Yang, Zhi; Lv, Zhiguo; Wang, Yishan; Li, Qianglong; Wei, Yufeng; Yang, Yang; Yang, Xiaojun; Zhao, Wei

doi:10.1016/j.ijleo.2019.163093

Cited by 11 publications

(2 citation statements)

References 12 publications

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“…Researchers successfully optimized laser ablation parameters in the fabrication of medical implants by merging fuzzy logic with classical optimization methods. This integration aimed to achieve two primary objectives: minimizing heat damage and ensuring exact material removal [159][160][161][162][163]. The aforementioned methodology effectively reconciled the demand for high-quality surface finishes with the necessity for biocompatibility, thereby demonstrating the capacity of hybrid approaches to tackle intricate manufacturing limitations [164][165][166].…”

Section: Practical Applications and Case Studiesmentioning

confidence: 99%

Systematic review of optimization techniques for laser beam machining

Kharche,

Patil

2024

Eng. Res. Express

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Laser Beam Machining (LBM) has several applications in the aerospace, medical, and automobile domains. Optimization techniques are essential for LBM to increase resource-efficiency and sustainability of the system. The present paper aims to provide a systematic review of the research in the domain of optimization techniques for LBM. A total of 228 research papers published during the last 20 years, from 2003 to 2023, are reviewed. The literature review is classified into three major sections- (i) optimization techniques, (ii) applications of optimization techniques, and (iii) challenges and future directions. The novelty of the present systematic review paper is to provide a direction for future research in the domain of optimization techniques of LBM. As a result of the suggested research, an efficient and sustainable LBM with the required performance will be developed in the shortest possible time.

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Section: Practical Applications and Case Studiesmentioning

confidence: 99%

Systematic review of optimization techniques for laser beam machining

Kharche,

Patil

2024

Eng. Res. Express

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“…Although HCFs have lower non-linear effects [22] and higher power damage thresholds [23] compared to conventional silica solid fibers, the effect of non-linearity could not be ignored for the laser transmission process of ultrafast lasers with high peak power over 30 MW [24]. Ultra-fast laser pulses transmitted along the HCFs have enough energy to interact with the air or gas in the hollow core to introduce the pulse chirp and thus broadening the pulse duration [25][26][27]. Factors found to be influencing power transmission limitations have been explored in several studies that show non-linear effects such as Raman scatting and SPM have played a critical role in ultra-fast laser delivering efficiency [28,29].…”

Section: Introductionmentioning

confidence: 99%

Flexible beam delivery of ultrafast laser through vacuum-pumped anti-resonant hollow-core fiber

Cai

Mai²,

Shen

et al. 2023

Front. Phys.

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We demonstrate the transmission of a 100 MW-peak-power ultrafast laser through a 5-m anti-resonant hollow-core fiber (AR-HCF) with a pumpable armored tube for air exhaust. The AR-HCF consists of a 45-μm-hollow-core and seven untouched capillaries with an attenuation of 0.11 dB/m measured at a wavelength of 1030 nm. We investigate the effect of air-filling and vacuum pumping on transmission efficiency and pulse distortion. The comparison reveals the importance of controlling air concentration in hollow-core fibers (HCFs) for achieving high transmission efficiency and pulse quality. With the suppression of air concentration, the transmission efficiency increases from 61% to 72%, and pulse distortion is effectively controlled. The results demonstrate the potential of AR-HCFs for high-power ultrafast laser delivery systems for various applications. The pumpable armored tube design provides a simple and effective solution to suppress self-phase modulation (SPM) and enable flexible beam delivery.

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