4.7 Article

Mechanism and optimization of femtosecond laser welding fused silica and aluminum

Related references

Note: Only part of the references are listed.
Article Thermodynamics

Numerical insight into heat transfer in surface melting and ablation subject to femtosecond laser processing aluminum

Gen Lin et al.

Summary: In this study, the heat transfer in surface melting and ablation during femtosecond laser processing of aluminum is investigated. A proposed algorithm focusing on the energy consumed by latent heat of melting is used. The two-temperature model (TTM) is solved using electron temperature-dependent material properties. The evolution of electron and ion temperatures is studied to evaluate surface melting and ablation. The proposed model is validated by comparing the calculated ablation depth with experimental measurements. The fraction of liquid, taking into account the latent heat of melting, is used to describe surface melting. A mushy zone characterizing surface melting is identified. Electron-ion coupled heat transfer is found to trigger the rapid expansion of the mushy zone and melting depth in ultrafast surface melting. The energy consumed by latent heat of melting causes a delay in melting initiation and results in smaller melting depth, but has negligible impact on ablation. Furthermore, numerical analysis shows that energy loss due to thermal radiation has a neglectable effect on surface melting and ablation.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER (2023)

Article Engineering, Manufacturing

Ultrafast quasi-three-dimensional imaging

Yiling Lian et al.

Summary: Quasi-3D imaging method is proposed to describe ultrafast processes and analyze spatial asymmetries of laser induced plasma, providing a comprehensive understanding of plasma dynamics and various complex ultrafast phenomena.

INTERNATIONAL JOURNAL OF EXTREME MANUFACTURING (2023)

Article Optics

Robust and adhesive-free joint of Nd:YAG crystals by femtosecond laser-assisted welding

Tatiana O. Lipateva et al.

Summary: The laser-assisted yttrium aluminum garnet (YAG) crystal-to-crystal bonding with shear strength up to 110 MPa was investigated using various microscopy techniques. The presence of an amorphous phase, confirmed by electron microscopy, showed a nanoperiodic amorphous nanoplanes structure interleaved with crystalline regions. The results suggest a potential development of passive cooling technology for high-power solid-state lasers.

OPTICS AND LASER TECHNOLOGY (2022)

Review Engineering, Industrial

Laser techniques for dissimilar joining of aluminum alloys to steels: A critical review

Jin Yang et al.

Summary: The use of multi-material structures is an effective solution to reduce weight and emissions in the automotive industry. However, joining aluminum alloys to steels is challenging due to their mismatched properties. Laser-based processes have been explored to overcome this issue and this review examines the recent achievements and progress in this field, evaluating factors such as joining conditions, filler materials, microstructure, and mechanical properties.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2022)

Article Optics

Transmission Laser Welding of Similar and Dissimilar Semiconductor Materials

Pol Sopena et al.

Summary: This study demonstrates the feasibility of transmission laser welding between silicon workpieces using nanosecond laser pulses, achieving a high shear joining strength. The remarkable performance can be achieved for similar and dissimilar semiconductors. This has significant implications for important technology developments.

LASER & PHOTONICS REVIEWS (2022)

Article Nanoscience & Nanotechnology

Femtosecond Laser-Induced Anisotropic Structure and Nonlinear Optical Response of Yttria-Stabilized Zirconia Single Crystals with Different Planes

Ziqian Ning et al.

Summary: This study demonstrates the anisotropic light-material interaction and nonlinear optical response of yttria-stabilized zirconia (YSZ) with fs laser-induced micro-/nanostructures on [100], [110], and [111] planes. The results show that the nonlinear absorption (NLA) of crack structures is significantly improved, particularly in [100] samples. This research provides a potential approach to enhance the nonlinearity of materials for the development of nonlinear devices using fs laser.

ACS APPLIED MATERIALS & INTERFACES (2022)

Article Chemistry, Physical

Dynamic all-optical control in ultrashort double-pulse laser ablation

Sergey Kudryashov et al.

Summary: The double-pulse femtosecond laser ablation of thin aluminum films and bulk aluminum showed a surprising increase in the thickness-dependent thresholds for inter-pulse delays of 20-200 ps, with time-resolved optical studies confirming the variation of the ablation threshold. The simulations revealed the underlying pre-ablative laser-induced stress dynamics in the hot, acoustically relaxed Al melt, crucially sensitive to the second pump-pulse compressive pressurization, enabling efficient dynamic all-optical control of ultrafast laser ablation.

APPLIED SURFACE SCIENCE (2021)

Article Chemistry, Physical

Martensitic transformation in temporally shaped femtosecond laser shock peening 304 steel

Yiling Lian et al.

Summary: Laser shock peening with temporally shaped femtosecond laser pulses was applied to strengthen 304 stainless steel, showing over 20% improvement in hardness. The mechanism was revealed through theoretical models and experimental techniques, providing insight into electron dynamics control for structural transformation and surface strengthening in various material systems.

APPLIED SURFACE SCIENCE (2021)

Article Optics

Taming Ultrafast Laser Filaments for Optimized Semiconductor-Metal Welding

Maxime Chambonneau et al.

Summary: Research shows that by precompensating for nonlinear focal shift, semiconductor-metal ultrafast laser welding can be achieved, resulting in welds with shear joining strengths of up to 2.2 MPa. Material analyses shed light on the physical mechanisms involved during the interaction.

LASER & PHOTONICS REVIEWS (2021)

Article Chemistry, Physical

Influence of stress confinement, particle shielding and re-deposition on the ultrashort pulse laser ablation of metals revealed by ultrafast time-resolved experiments

Maximilian Spellauge et al.

Summary: The ablation rate in double-pulse material processing is significantly affected by the pulse separation, with mechanisms such as rarefaction wave suppression, shielding by ablation plume, and material re-deposition playing important roles. The study found that the rarefaction wave contributes about 25% to the double-pulse ablation volume for aluminum and stainless steel, and about 40% for copper. Ablation efficiency and precision are maximized when energy is coupled into the material before mechanical relaxation or after material surface equilibration.

APPLIED SURFACE SCIENCE (2021)

Review Optics

A review on the effect of laser pulse shaping on the microstructure and hot cracking behavior in the welding of alloys

Peilei Zhang et al.

Summary: This article discusses the application of pulsed laser in alloy welding, summarizes the main welding problems and prevention methods, and comprehensively analyzes the formation and growth processes of hot cracks in pulsed laser welding.

OPTICS AND LASER TECHNOLOGY (2021)

Article Chemistry, Physical

Optical properties of titanium induced by below-ablation-threshold irradiation

Yuki Furukawa et al.

APPLIED SURFACE SCIENCE (2020)

Article Chemistry, Physical

Pump-probe microscopy of femtosecond laser ablation in air and liquids

Alexander Kanitz et al.

APPLIED SURFACE SCIENCE (2019)

Article Multidisciplinary Sciences

Ultrafast laser welding of ceramics

E. H. Penilla et al.

SCIENCE (2019)

Article Optics

Picosecond laser seal welding of glasses with a large gap

Hang Chen et al.

OPTICS EXPRESS (2019)

Article Optics

Microwelding of glass to silicon by green ultrafast laser pulses

Jiejuan Zhang et al.

OPTICS AND LASER TECHNOLOGY (2019)

Article Materials Science, Multidisciplinary

Welding of glasses in optical and partial-optical contact via focal position adjustment of femtosecond-laser pulses at moderately high repetition rate

Hua Tan et al.

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING (2017)

Article Materials Science, Multidisciplinary

Characterisation of weld zone reactions in dissimilar glass-to-aluminium pulsed picosecond laser welds

Octav P. Ciuca et al.

MATERIALS CHARACTERIZATION (2016)

Review Optics

[INVITED] Laser welding of glasses at high repetition rates - Fundamentals and prospects

Soeren Richter et al.

OPTICS AND LASER TECHNOLOGY (2016)

Article Optics

Direct welding of glass and metal by 1 kHz femtosecond laser pulses

Guodong Zhang et al.

APPLIED OPTICS (2015)

Article Optics

Picosecond laser welding of similar and dissimilar materials

Richard M. Carter et al.

APPLIED OPTICS (2014)

Article Optics

Laser Fabrication of Nanostructures on a Pure Aluminum Surface in Air

Haifeng Yang et al.

JOURNAL OF RUSSIAN LASER RESEARCH (2013)

Article Nanoscience & Nanotechnology

Surface-activated supercooled liquid brazing

Hidemi Kato et al.

SCRIPTA MATERIALIA (2013)

Article Optics

Ultrafast pump-probe microscopy with high temporal dynamic range

Matthias Domke et al.

OPTICS EXPRESS (2012)

Review Physics, Multidisciplinary

Femtosecond filamentation in transparent media

A. Couairon et al.

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS (2007)

Article Thermodynamics

Energy transport and nanostructuring of dielectrics by femtosecond laser pulse trains

Lan Jiang et al.

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME (2006)

Article Biophysics

Biocompatibility of a physiological pressure sensor

C Yang et al.

BIOSENSORS & BIOELECTRONICS (2003)

Article Physics, Fluids & Plasmas

Interband and intraband (Drude) contributions to femtosecond laser absorption in aluminum

D Fisher et al.

PHYSICAL REVIEW E (2002)