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
Tridimensional multiphysics model for the study of photo-induced thermal effects in arbitrary nano-structures
TL;DR: In this paper, a numerical scheme based on the Finite element method (FEM) is proposed for a tri-dimensional investigation of photo-induced thermal effects in arbitrary nano-structures.
Journal ArticleDOI
Submicron bubbles/voids formation in the subsurface region of soda-lime glass by single pulse fs laser-induced spallation
Shengying Lai,Shengying Lai,Martin Ehrhardt,Pierre Lorenz,Dietmar Hirsch,Joachim Zajadacz,Jian Lu,Bing Han,Klaus Zimmer +8 more
TL;DR: In this paper, the formation of bubbles near the surface of soda-lime glass induced by single pulse irradiation with Ti: Sapphire laser of a wavelength of 775nm and 150‾fs pulse duration below the laser ablation threshold is reported.
Journal ArticleDOI
Laser-induced breakdown and damage generation by nonlinear frequency conversion in ferroelectric crystals: Experiment and theory
TL;DR: In this paper, the authors considered the mechanism underlying laser-induced damage in ferroelectric crystals, which involves generation and heating of free electrons, providing an effective kinetic pathway for electric breakdown and crystal damage in ns pulsed operation via combined two-photon absorption (TPA) and induced pyroelectric field.
Journal ArticleDOI
Investigation of damage generation process by stress waves during femtosecond laser drilling of SiC
TL;DR: In this article, high-speed phenomena during the femtosecond laser drilling of silicon carbide (SiC) are observed with high temporal and spatial resolutions by combining pump-probe imaging and a high speed camera.
Journal ArticleDOI
Bremsstrahlung from the interaction of short laser pulses with dielectrics
TL;DR: In this article, the authors present a theory of bremsstrahlung emission appropriate for the interaction of laser pulses with dielectrics, which can be used to provide a broadband light source for diagnostics.
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.