Ultrafast laser processing of transparent materials

2004 ◽  
Author(s):  
Z. B. Wang ◽  
Ming Hui Hong ◽  
L. Yin ◽  
Tow Chong Chong
Keyword(s):  
Laser Processing ◽  
Ultrafast Laser ◽  
Transparent Materials

scholarly journals Progress in ultrafast laser processing and future prospects

Nanophotonics ◽  
2017 ◽  
Vol 6 (2) ◽  
pp. 393-413 ◽  
Author(s):  
Koji Sugioka
Keyword(s):  
Laser Processing ◽  
Ultrafast Lasers ◽  
Industrial Applications ◽  
Femtosecond Laser Pulses ◽  
Ultrafast Laser ◽  
Heat Diffusion ◽  
Multiphoton Absorption ◽  
Future Prospects ◽  
Practical Applications ◽  
Transparent Materials

AbstractThe unique characteristics of ultrafast lasers have rapidly revolutionized materials processing after their first demonstration in 1987. The ultrashort pulse width of the laser suppresses heat diffusion to the surroundings of the processed region, which minimizes the formation of a heat-affected zone and thereby enables ultrahigh precision micro- and nanofabrication of various materials. In addition, the extremely high peak intensity can induce nonlinear multiphoton absorption, which extends the diversity of materials that can be processed to transparent materials such as glass. Nonlinear multiphoton absorption enables three-dimensional (3D) micro- and nanofabrication by irradiation with tightly focused femtosecond laser pulses inside transparent materials. Thus, ultrafast lasers are currently widely used for both fundamental research and practical applications. This review presents progress in ultrafast laser processing, including micromachining, surface micro- and nanostructuring, nanoablation, and 3D and volume processing. Advanced technologies that promise to enhance the performance of ultrafast laser processing, such as hybrid additive and subtractive processing, and shaped beam processing are discussed. Commercial and industrial applications of ultrafast laser processing are also introduced. Finally, future prospects of the technology are given with a summary.

scholarly journals Ultrafast laser processing of transparent materials supported by in-situ diagnostics

2021 ◽  
Author(s):  
Malte Kumkar ◽  
Myriam Kaiser ◽  
Jonas Kleiner ◽  
Daniel Günther Grossmann ◽  
Daniel Flamm ◽  
...  
Keyword(s):  
Laser Processing ◽  
Bulk Material ◽  
Ultrafast Laser ◽  
Rear Side ◽  
Laser Etching ◽  
Pump Probe ◽  
Transient Stress ◽  
Transparent Materials ◽  
In Situ Diagnostics

For the development of industrial NIR ultrafast laser processing of transparent materials, the absorption inside the bulk material has to be controlled. Applications we aim for are front and rear side ablation, drilling and inscription of modifications for cleaving and selective laser etching of glass and sapphire in sheet geometry. We applied pump probe technology and in situ stress birefringence microscopy for fundamental studies on the influence of energy and duration (100 fs – 20 ps), temporal and spatial spacing, focusing and beam shaping of the laser pulses. Applying pump probe technique we are able to visualize differences of spatio-temporal build up of absorption, self focusing, shock wave generation for standard, multispot and beam shaped focusing. Incubation effects and disturbance of beam propagation due to modifications or ablation can be observed. In-situ imaging of stress birefringence gained insight in transient build up of stress with and without translation. The results achieved so far, demonstrate that transient stress has to be taken into account in scaling the laser machining throughput of brittle materials. Furthermore it points out that transient stress birefringence is a good indicator for accumulation effects, supporting tailored processing strategies.Cutting results achieved for selective laser etching by single pass laser modification exemplifies the benefits of process development supported by in situ diagnostics.

scholarly journals Ultrafast laser processing of transparent materials supported by in-situ diagnostics

2016 ◽  
Author(s):  
M. Kumkar ◽  
M. Kaiser ◽  
J. Kleiner ◽  
D. Grossmann ◽  
D. Flamm ◽  
...  
Keyword(s):  
Laser Processing ◽  
Ultrafast Laser ◽  
Transparent Materials ◽  
In Situ Diagnostics

Ultrafast laser processing of ceramics: Comprehensive survey of laser parameters

2021 ◽  
Vol 33 (1) ◽  
pp. 012009
Author(s):  
Aiko Narazaki ◽  
Hideyuki Takada ◽  
Dai Yoshitomi ◽  
Kenji Torizuka ◽  
Yohei Kobayashi
Keyword(s):  
Laser Processing ◽  
Ultrafast Laser ◽  
Laser Parameters ◽  
Comprehensive Survey

Adaptive spatio-temporal techniques for smart ultrafast laser processing of optical glasses

2009 ◽  
Author(s):  
Razvan Stoian ◽  
Alexandre Mermillod-Blondin ◽  
Cyril Mauclair ◽  
Guanghua Cheng ◽  
Konstantin Mishchik ◽  
...  
Keyword(s):  
Laser Processing ◽  
Ultrafast Laser ◽  
Optical Glasses ◽  
Spatio Temporal

Mitigating intrinsic defects and laser damage using pulsetrain-burst (>100 MHz) ultrafast laser processing

2005 ◽  
Author(s):  
Luke McKinney ◽  
Felix Frank ◽  
David Graper ◽  
Jesse Dean ◽  
Paul Forrester ◽  
...  
Keyword(s):  
Laser Processing ◽  
Ultrafast Laser ◽  
Laser Damage ◽  
Intrinsic Defects
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