Laser-induced breakdown by impact ionization in SiO2 with pulse widths from 7 ns to 150 fs

Du, D.; Liu, X.; Korn, G.; Squier, Jeff; Mourou, G.

doi:10.1063/1.111350

Cited by 795 publications

(380 citation statements)

References 11 publications

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“…Laue diffraction studies will be particu- ‡ Electronic jitter in high performance circuits is currently ϳ1 ps; hence, an additional detector will be required to measure both light and x-rays scattered from the crystal and thereby determine any pulse separation. § Assuming 100% quantum efficiency, a 100-m-thick crystal with unit cell volume ϳ1,000 nm 3 requires a minimum flux of ϳ30 mJ͞cm 2 for full excitation, three orders of magnitude below the plasma limit of SiO 2 using a pulse of 100-fs duration (29). Surprisingly, the energy threshold for plasma generation increases as one shortens the pulse duration below 10 ps.…”

Section: Physical Crystalmentioning

confidence: 99%

Femtosecond time resolution in x-ray diffraction experiments

Neutze

Hajdu

1997

Proc. Natl. Acad. Sci. U.S.A.

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This paper presents the theoretical background for a synthesis of femtosecond spectroscopy and x-ray diffraction. When a diffraction quality crystal with 0.1-0.3 mm overall dimensions is photoactivated by a femtosecond laser pulse (physical length ‫؍‬ 0.3 m), the evolution of molecules at separated points in the crystal will not be simultaneous because a finite time is required for the laser pulse to propagate through the body of the crystal. Utilizing this lack of global crystal synchronization, topographic x-ray diffraction may enable femtosecond temporal resolution to be achieved from ref lection profiles in the diffraction pattern with x-ray exposures of picosecond or longer duration. Such x-ray pulses are currently available, and could be used to study femtosecond reaction dynamics at atomic resolution on crystals of both small-and macromolecules. A general treatment of excitation and diffraction geometries in relation to spatial and temporal resolution is presented.

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Section: Physical Crystalmentioning

confidence: 99%

Femtosecond time resolution in x-ray diffraction experiments

Neutze

Hajdu

1997

Proc. Natl. Acad. Sci. U.S.A.

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“…In both schemes the beams can be focused by a large parabola. The dielectric coating used for the parabola will have a damage threshold of 1 J/cm 2 (for short pulses) [7,8], imposing a parabola size of 10m in diameter. This parabola will have the same diameter as the Keck telescope.…”

Section: En Route To "Zettawatt"mentioning

confidence: 99%

Superstrong field science

Tajima¹,

Mourou²

2002

AIP Conference Proceedings

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Abstract. Over the past fifteen years we have seen a surge in our ability to produce high intensities, five to six orders of magnitude higher than was possible before. At these intensities, particles, electrons and protons, acquire kinetic energy in the mega-electron-volt range through interaction with intense laser fields. This opens a new age for the laser, the age of nonlinear relativistic optics coupling even with nuclear physics. We suggest a path to reach an extremely high-intensity level 10 26~28 W/cm 2 in the coming decade, much beyond the current and near future intensity regime 10 23 W/cm 2 , taking advantage of the megajoule laser facilities. Such a laser at extreme high intensity could accelerate particles to frontiers of high energy, tera-electron-volt and peta-electronvolt, and would become a tool of fundamental physics encompassing particle physics, gravitational physics, nonlinear field theory, ultrahigh-pressure physics, astrophysics, and cosmology. Such a laser intensity may also be very beneficial to an alternative, more direct approach of fast ignition in laser fusion. We suggest a new possibility to explore this.

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“…The overriding consideration in the design of a near-field structure must be to avoid field breakdown due to the high power density which will necessarily be located at the field-shaping boundary. Metallic cavities, standard at microwave frequencies, are no longer advantageous at near-optical scales, where the most promising materials are dielectrics that can withstand fields of a few GV/m for pulses of a few picoseconds [4]. Notwithstanding this practical limit, near-field structures have the advantage that they can be resonantly excited, giving fields in the structure larger than those of the driving laser, and field symmetry and synchronicity can be enforced in a straightforward way.…”

Section: Introductionmentioning

confidence: 99%

A Resonant, THz Slab-Symmetric Dielectric-Based Accelerator

Yoder¹,

Rosenzweig²

2002

AIP Conference Proceedings

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Abstract. Slab-symmetric dielectric-loaded structures, consisting of a vacuum gap between dielectric-lined conducting walls, have become a subject of interest for short-wavelength acceleration due to their simplicity, relatively low power density, and advantageous beam dynamics. Such a structure can be resonantly excited by an external power source and is known to strongly suppress transverse wakefields. Motivated by the prospect of a high-power FIR radiation source, currently under construction at UCLA, we investigate a high-gradient slabsymmetric accelerator powered by up to 100 MW of laser power at 340 um, with a predicted gradient near 100 MeV/m. Three-dimensional simulation studies of the structure fields and wakes are presented and compared with theory, and a future experiment is discussed.

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Laser-induced breakdown by impact ionization in SiO2 with pulse widths from 7 ns to 150 fs

Cited by 795 publications

References 11 publications

Femtosecond time resolution in x-ray diffraction experiments

Femtosecond time resolution in x-ray diffraction experiments

Superstrong field science

A Resonant, THz Slab-Symmetric Dielectric-Based Accelerator

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