Laser cleaning of particle and grease contaminations on the surface of optics

Ye, Yayun; Yuan, Xiaodong; Xi, Xiang; Cheng, Xinbin; Miao, Xinxiang

doi:10.1016/j.ijleo.2011.07.030

Cited by 39 publications

(23 citation statements)

References 15 publications

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“…Surface contamination has long been recognized as a performance-limiting issue in many areas of technology including microelectronics [1], nuclear reactors [2,3], and optics [4][5][6]. While debris accumulation on optical surfaces is generally problematic because of light scattering, diffraction, and obscuration, the impact to performance takes on new dimensions when considering optics for high-power laser systems [7,8].…”

Section: Introductionmentioning

confidence: 99%

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Phase modulation and morphological evolution associated with surface-bound particle ablation

et al. 2013

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Surface modification of fused silica windows caused by the ablation of surface-bound microparticles under short pulse laser irradiation is investigated and related to beam propagation effects. Particle material dispersal and subsequent surface pitting after multiple pulses of 351 nm, ∼9 J∕cm 2 laser light were found to depend strongly on material type and particle size. Surface pitting was most significant for opaque materials (aluminum, steel, acetal homopolymer), yielding pits as deep as 600 nm for ∼30 μm diameter particles. Transparent particles (PET polymer, glass) tended to disperse material more widely and caused less pitting (∼100 nm) than the opaque materials. Paraxial light propagation analysis showed that phase objects created by ablated opaque materials resulted in higher peak intensification (∼3x) than those created by transparent materials (∼1.5x). The fragmentation of ablated material is discussed in terms of brittle or ductile failure at high strain rates, indicating reasonable agreement between experiment and theory. An approximation for the laser-induced plasma pressure and size of the dispersal pattern is derived, indicating an inverse correlation with material density.OCIS codes: (320.4240) Nanosecond phenomena; (140.3330) Laser damage; (070.4690) Morphological transformations.http://dx.

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Section: Introductionmentioning

confidence: 99%

“…This nondestructive technique has been exploited since the early 1990s and remains an active area of research today [5,10,11]. The essential physics involves Van der Waals forces that are overcome by laser-driven thermal expansion and interfacial plasma pressure to remove particles.…”

Section: Introductionmentioning

confidence: 99%

Phase modulation and morphological evolution associated with surface-bound particle ablation

et al. 2013

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“…Hsu and Lin (2006) investigated the removal mechanisms of contaminants in laser cleaning. Ye et al (2012) used the 1064 nm laser-induced plasma shockwave cleaning to remove SiO 2 particle contaminations on the K9 glass surface by properly controlling the laser parameters, and they reported that the removal ratio could reach above 95 %. Krüger et al (2008) reported the ability of laser pulse to remove unwanted particles and films of nano-size from the material surfaces.…”

Section: Introductionmentioning

confidence: 99%

Remanufacturing cathode from end-of-life of lithium-ion secondary batteries by Nd:YAG laser radiation

Liu

Zhang

Qing

et al. 2015

Clean Techn Environ Policy

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The electric vehicle industry has been rapidly developing internationally. Electric vehicle batteries (EVBs) are perceived as a low environmental impact energy storage technology. While the service life of an EVB is relatively long, a significant number of battery packs will reach the end of their service lives eventually. The end-of-life (EOL) EVBs may still have appreciable residual value for remanufacturing and secondary use. Some solid-electrolyte interface (SEI) layers will persist on the surface of electrodes deposit after a period of continuous cycling, causing the battery degradation and failure. An approach to battery end-of-life management was introduced involving remanufacturing of the cathode from EOL lithium-ion battery electrodes, and a recent study on remanufacturing process of the degraded EVBs using pulse laser to radiate SEI on the electrode surface was presented in this paper, here on a laboratory scale. Based on experimental data, the SEI film removal was carried out with laser energy intensity ranging from 0.035 to 0.169 J/mm 2 . The remanufactured cathodes were characterized through a combination of scanning electron microscopy, Fourier transform infrared spectroscopy, and wavelength dispersive spectrometer, respectively. The experimental results indicated that the remanufacturing treatments were successful in removing the EOL by-products (e.g., SEI films) and upgrading the cathode to its pre-cycling functionality. It is suggested that the fade capacity of a lithium-ion battery can be recovered by using laser radiation method.

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“…Recovery processes have been developed to remove oil from damaging areas. Laser technology has been introduced to oil removal from contaminated areas [4][5][6][7]. To achieve this cleaning concept, Q-switched Nd:YAG laser has been proposed as a new tool in oil removal [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Laser cleaning of oil spill on coastal rocks

2015

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In recent years, oil spills have become a significant environmental problem in Thailand. This paper presents a laser treatment for controlled-clean up oil spill from coastal rocks. The cleaning of various types of coastal rocks polluted by the spill was investigated by using a quasi CW diode laser operating at 808 nm. The laser power was attempted from 1 W to 70 W. The result is shown to lead to the laser removal of oil spill, without damaging the underlying rocks. In addition, the cleaning efficiency is evaluated using an optical microscope. This study shows that the laser technology would provide an attractive alternative to current cleaning methods to remove oil spill from coastal rocks.

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Laser cleaning of particle and grease contaminations on the surface of optics

Cited by 39 publications

References 15 publications

Phase modulation and morphological evolution associated with surface-bound particle ablation

Phase modulation and morphological evolution associated with surface-bound particle ablation

Remanufacturing cathode from end-of-life of lithium-ion secondary batteries by Nd:YAG laser radiation

Laser cleaning of oil spill on coastal rocks

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