Plastic deformation mechanism of polycrystalline copper foil shocked with femtosecond laser

Ye, Y.X.; Feng, Y.Y.; Lian, Z.C.; Hua, Yinqun

doi:10.1016/j.apsusc.2014.05.019

Cited by 33 publications

(12 citation statements)

References 31 publications

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“…We take ˛ = 0.15 in our calculation. Z water = 0.148 × 10 6 g cm −2 s −1 [22] and Z Cu = 3.83 × 10 6 g cm −2 s −1 [23]. Therefore, Z = 0.28 × 10 6 g cm −2 s −1 .…”

Section: Temperature Increases During the Laser Shock Processmentioning

confidence: 98%

Investigation of the crater-like microdefects induced by laser shock processing with aluminum foil as absorbent layer

Xuan

Lian

et al. 2015

Applied Surface Science

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“…We take ˛ = 0.15 in our calculation. Z water = 0.148 × 10 6 g cm −2 s −1 [22] and Z Cu = 3.83 × 10 6 g cm −2 s −1 [23]. Therefore, Z = 0.28 × 10 6 g cm −2 s −1 .…”

Section: Temperature Increases During the Laser Shock Processmentioning

confidence: 98%

Investigation of the crater-like microdefects induced by laser shock processing with aluminum foil as absorbent layer

Xuan

Lian

et al. 2015

Applied Surface Science

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“…This kind of confining layer has been used in Ref [10]. Adhesive tape, the main component of which is polypropylene, was another new confining layer used in our experiments [15], because of its higher acoustic impedance (0.19 Â 10 6 gcm À 2 s À 1 ) [24].…”

Section: Methodsmentioning

confidence: 99%

“…For direct ablation by fs laser, strong shock wave with a peak pressure of tens to hundreds of GPa can easily be obtained [11][12][13][14]. We also quantitatively evaluated the peak pressure of a fs laserinduced shock wave when it was used for confined ablation (where a transparent confining layer is used to confine the expansion of the ablated plasma) and we found that, even with a very low laser fluence, the peak pressure could reach several tens of GPa [15], which is much higher than the dynamic yield strengths of most metals. So, fs laser-induced shock waves have been used in processing materials and fabricating parts [10,[15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 96%

“…We also quantitatively evaluated the peak pressure of a fs laserinduced shock wave when it was used for confined ablation (where a transparent confining layer is used to confine the expansion of the ablated plasma) and we found that, even with a very low laser fluence, the peak pressure could reach several tens of GPa [15], which is much higher than the dynamic yield strengths of most metals. So, fs laser-induced shock waves have been used in processing materials and fabricating parts [10,[15][16][17][18][19][20]. Compared to a ns laser, a fs laser has unique advantages when performing micromachining and micro manufacturing, including higher precision and the lack of a heat-affected zone [21,22].…”

Section: Introductionmentioning

confidence: 98%

“…All these properties make fs lasers very suitable for microforming. In our previous work [10,15], we conducted experiments involving fs laser shock forming. A new confining layer has been used in the fs laser shock process and three-dimensional (3D) microstructures have been produced successfully on metal foil.…”

Section: Introductionmentioning

confidence: 99%

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Mold-free fs laser shock micro forming and its plastic deformation mechanism

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3D Laser Writing of Low‐Loss Cross‐Section‐Variable Type‐I Optical Waveguide Passive/Active Integrated Devices in Single Crystals

Chen,

Yang

et al. 2024

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Optical waveguides fabricated in single crystals offer crucial passive/active optical components for photonic integrated circuits. Single crystals possess inherent advantages over their amorphous counterpart, such as lower optical losses in visible‐to‐mid‐infrared band, larger peak emission cross‐section, higher doping concentration. However, the writing of Type‐I positive refractive index modified waveguides in single crystals using femtosecond laser technology presents significant challenges. Herein, we introduce a novel femtosecond laser direct writing technique that combines slit‐shaping with an immersion oil objective to fabricate low‐loss Type‐I waveguides in single crystals. This approach allows for precise control of waveguide shape, size, mode‐field and refractive index distribution, with a spatial resolution as high as 700 nm and a high positive refractive index variation on the order of 10−2, introducing new degrees of freedom to design and fabricate passive/active optical waveguide devices. As a proof‐of‐concept, we successfully produced a 7 mm‐long circular‐shaped gain waveguide (∼10 µm in diameter) in an Er3+‐doped YAG single crystal, exhibiting a propagation loss as low as 0.23 dB/cm, a net gain of ∼3 dB and a polarization‐insensitive character. The newly‐developed technique is theoretically applicable to arbitrary single crystals, holding promising potential for various applications in integrated optics, optical communication, and photonic quantum circuits.This article is protected by copyright. All rights reserved

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Plastic deformation mechanism of polycrystalline copper foil shocked with femtosecond laser

Cited by 33 publications

References 31 publications

Investigation of the crater-like microdefects induced by laser shock processing with aluminum foil as absorbent layer

Investigation of the crater-like microdefects induced by laser shock processing with aluminum foil as absorbent layer

Mold-free fs laser shock micro forming and its plastic deformation mechanism

3D Laser Writing of Low‐Loss Cross‐Section‐Variable Type‐I Optical Waveguide Passive/Active Integrated Devices in Single Crystals

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