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 Article
Theory of electron-avalanche breakdown in solids
M. Sparks,D. L. Mills,R. Warren,T. Holstein,Alexei A. Maradudin,L. J. Sham,E. Loh,D. F. King +7 more
TL;DR: In this paper, a theory that is predictive and agrees with experimental results for the magnitude of the breakdown field and its temperature dependence, pulse-duration dependence, material-to-material variation, and wavelength dependence for λ > 1 μm.
Journal ArticleDOI
Femtosecond laser nanoaxotomy lab-on-a-chip for in vivo nerve regeneration studies
Samuel X. Guo,Frederic Bourgeois,Trushal Vijaykumar Chokshi,Nicholas J. Durr,Massimo A. Hilliard,Nikos Chronis,Adela Ben-Yakar +6 more
TL;DR: Using the 'nanoaxotomy' chip, it is discovered that axonal regeneration occurs much faster than previously described, and notably, the distal fragment of the severed axon regrows in the absence of anesthetics.
Journal ArticleDOI
Directing cell migration and organization via nanocrater-patterned cell-repellent interfaces
Hojeong Jeon,Hojeong Jeon,Sangmo Koo,Willie Mae Reese,Peter Loskill,Peter Loskill,Costas P. Grigoropoulos,Kevin E. Healy,Kevin E. Healy +8 more
TL;DR: By using multiphoton ablation lithography to pattern surfaces with nanoscale craters of various aspect ratios and pitches, it is shown that the surfaces altered the cells’ focal-adhesion size and distribution, thus affecting cell morphology, migration and ultimately localization.
Journal ArticleDOI
Birefringent Fresnel zone plates in silica fabricated by femtosecond laser machining
TL;DR: M maskless, single-step fabrication of strongly birefringent Fresnel zone plates by focusing of femtosecond laser pulses deep within silica substrates is demonstrated.
Journal ArticleDOI
Diffraction gratings: from principles to applications in high-intensity lasers
Nicolas Bonod,Jérôme Néauport +1 more
TL;DR: In this article, the authors review the physics of diffraction gratings and detail the interest in them for pulse compression of high-power laser systems, showing that the unique spectral properties of these gratings revolutionized the field of high energy laser systems.
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.