Journal ArticleDOI
Ultrashort-pulse laser machining of dielectric materials
Michael D. Perry,Brent C. Stuart,P.S. Banks,Michael D. Feit,Victor Yanovsky,Alexander M. Rubenchik +5 more
TLDR
In this article, the authors show that high precision machining of all dielectrics (oxides, fluorides, explosives, teeth, glasses, ceramics, SiC, etc.) with no thermal shock or distortion of the remaining material by this mechanism is described.Abstract:
There is a strong deviation from the usual τ1/2 scaling of laser damage fluence for pulses below 10 ps in dielectric materials. This behavior is a result of the transition from a thermally dominated damage mechanism to one dominated by plasma formation on a time scale too short for significant energy transfer to the lattice. This new mechanism of damage (material removal) is accompanied by a qualitative change in the morphology of the interaction site and essentially no collateral damage. High precision machining of all dielectrics (oxides, fluorides, explosives, teeth, glasses, ceramics, SiC, etc.) with no thermal shock or distortion of the remaining material by this mechanism is described.read more
Citations
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Journal ArticleDOI
Femtosecond laser ablation properties of borosilicate glass
Adela Ben-Yakar,Robert L. Byer +1 more
TL;DR: In this article, the femtosecond laser ablation properties of borosilicate glass using atomic force microscopy and laser pulses of 200 fs duration, centered at 780 nm wavelength, were determined by studying the diameter and the depth of single-shot ablated craters.
Journal ArticleDOI
Damage and ablation thresholds of fused-silica in femtosecond regime
B. Chimier,Olivier Uteza,Nicolas Sanner,Marc Sentis,Tatiana Itina,Philippe Lassonde,François Légaré,François Vidal,Jean-Claude Kieffer +8 more
TL;DR: In this article, the damage and ablation thresholds at the surface of a dielectric material, e.g., fused silica, were investigated using short pulses ranging from 7 to 300 fs.
Journal ArticleDOI
The physics of ultra-short laser interaction with solids at non-relativistic intensities
TL;DR: In this article, a review of laser-matter interactions is presented, with a broad range of intensities from those inducing subtle atomic excitations (∼1010 W/cm2) up to high intensity when solid is swiftly transformed into hot and dense plasma.
Journal ArticleDOI
Metal microneedle fabrication using twisted light with spin
Takashige Omatsu,Keisuke Chujo,Katsuhiko Miyamoto,Masahito Okida,Kazuki Nakamura,Nobuyuki Aoki,Ryuji Morita +6 more
TL;DR: Microneedle fabrication on a metal surface based on laser ablation using twisted light with spin was demonstrated, for the first time, and the resulting needle showed a height of at least 10 microm above the target surface and a tip diameter of less than 0.3 microm.
Journal ArticleDOI
The plasma mirror—A subpicosecond optical switch for ultrahigh power lasers
TL;DR: In this paper, a detailed study of the performance of plasma mirrors in the near field of the laser beam is presented, a setup relevant to improving the pulse contrast of modern ultra-high power lasers (TW-PW).
References
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Tunnel ionization of complex atoms and of atomic ions in an altemating electromagnetic field
TL;DR: In this article, an expression for the probability of tunnel ionization in an alternating field, of a complex atom and of an atomic ion that are in an arbitrary state, was derived in the quasiclassical approximation n* $1.
Journal ArticleDOI
Nanosecond-to-femtosecond laser-induced breakdown in dielectrics
Brent C. Stuart,Michael D. Feit,S. Herman,Alexander M. Rubenchik,Bruce W. Shore,Michael D. Perry +5 more
TL;DR: A decreasing threshold fluence is found associated with a gradual transition from the long-pulse, thermally dominated regime to an ablative regime dominated by collisional and multiphoton ionization, and plasma formation.
Book
Quantum Processes in Semiconductors
TL;DR: In this paper, the energy and momentum conservation of phonon-impurity coupling in the diamond lattice is discussed. But the authors do not consider the effect of photo-ionization on photo-deionization of a hydrogenic acceptor.