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Article
Open AccessExperimental investigation of size broadening of a Kα x-ray source produced by high intensity laser pulses
The size of a hard Kα x-ray source ( \({\mathrm{E}}_{{\rm{K}}_{\rm{\alpha }}}\) E ...
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Article
Open AccessExploring phase contrast imaging with a laser-based Kα x-ray source up to relativistic laser intensity
This study explores the ability of a hard Kα x-ray source (17.48 keV) produced by a 10 TW class laser system operated at high temporal contrast ratio and high repetition rate for phase contrast imaging. For demon...
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Article
Investigation of ultrashort laser excitation of aluminum and tungsten by reflectivity measurements
We determine the laser-induced ablation threshold fluence in air of aluminum and tungsten excited by single near-infrared laser pulses with duration ranging from 15 to 100 fs. The ablation threshold fluence is...
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Article
Correction to: 22 W average power multiterawatt femtosecond laser chain enabling 1019 W/cm2 at 100 Hz
In the original publication, we erroneously reported that the substrate of the diffraction gratings used in the experiments was made of low expansion glass (zerodur). In fact, the substrate of the diffraction ...
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Article
22 W average power multiterawatt femtosecond laser chain enabling 1019 W/cm2 at 100 Hz
We measure the wavefront distortions of a high peak power ultrashort (23 fs) laser system under high average power load. After 6 min—100 Hz operation of the laser at full average power (> 22 W after compressio...
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Article
Open AccessImpact of the pulse contrast ratio on molybdenum Kα generation by ultrahigh intensity femtosecond laser solid interaction
We present an extended experimental study of the absolute yield of Kα x-ray source (17.48 keV) produced by interaction of an ultrahigh intensity femtosecond laser with solid Mo target for temporal contrast ratios...
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Article
Open AccessLaser-synthesized oxide-passivated bright Si quantum dots for bioimaging
Crystalline silicon (Si) nanoparticles present an extremely promising object for bioimaging based on photoluminescence (PL) in the visible and near-infrared spectral regions, but their efficient PL emission in...
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Article
High temporal resolution and calibration in pump–probe experiments characterizing femtosecond laser–dielectrics interaction
In the aim of performing pump–probe experiments with a high temporal accuracy, the determination of the perfect temporal overlap of the two incoming pulses is crucial. When addressing laser–dielectrics interac...
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Article
Guidelines for efficient direct ablation of dielectrics with single femtosecond pulses
We provide guidelines to femtosecond laser users to select ad hoc laser parameters, namely the fluence and pulse duration, in the context of the development of ablation processes at the surface of dielectrics ...
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Article
Laser-driven high-frequency vibrations of metal blister surface
Time-resolved interferometric microscopy was applied to investigate laser-induced blistering of a titanium film on a silica substrate. Ablation of the titanium/silica interface by single 0.7 ns pulses within a...
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Article
Control of material removal of fused silica with single pulses of few optical cycles to sub-picosecond duration
Surface ablation of a dielectric material (fused silica) by single femtosecond pulses is studied as a function of pulse duration (7–450 fs) and applied fluence (F th<F<10F ...
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Article
Shadowgraphic imaging of laser transfer driven by metal film blistering
A time-resolved shadowgraphic technique was used to investigate local transfer of diamond nanopowder from a thin titanium film on a silica support under irradiation by 450-fs or 50-ps laser pulses. Clean powde...
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Article
Open AccessNanofabrication with Pulsed Lasers
An overview of pulsed laser-assisted methods for nanofabrication, which are currently developed in our Institute (LP3), is presented. The methods compass a variety of possibilities for material nanostructuring...
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Article
Laser transfer of diamond nanopowder induced by metal film blistering
Blister-based laser induced forward transfer (BB-LIFT) is a promising technique to produce surface microstructures of various advanced materials including inorganic and organic micro/nanopowders, suspensions a...
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Article
Measurement of femtosecond laser-induced damage and ablation thresholds in dielectrics
The paper is focused on the importance of accurate determination of surface damage/ablation threshold of a dielectric material irradiated with femtosecond laser pulses. We show that different damage characteri...
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Article
Photolytical XeF(C–A) laser amplifier of femtosecond optical pulses: gain measurements and pump efficiency
Gain characteristics of a photolytically driven XeF(C–A) laser amplifier are studied experimentally in the unsaturated amplification regime. The gaseous active medium is optically pumped by vacuum-ultraviolet ...
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Chapter and Conference Paper
Laser Interaction with Nano-Spheres: Applications in Sub-Micron Particles Removal and Nanodot Array Fabrication
Laser-assisted nanoparticle removal processes like selective particle ablation, mechanical ejection, local substrate ablation, explosive evaporation are considered by experimental and theoretical approaches. E...
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Article
Time-of-flight measurements of ejected particles during dry laser cleaning
We propose an experimental approach which allows the characterization of the dynamics of the ejected particles in dry laser cleaning. Submicron silica particles on silicon substrates were illuminated by single...
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Article
Architecture of a blue high contrast multiterawatt ultrashort laser
The strategy used to develop an innovative high contrast multiterawatt femtosecond laser chain based on a hybrid (solid/gas) technology is reported. The laser system includes a Ti:sapphire oscillator generatin...
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Article
Numerical study of ultra-short laser ablation of metals and of laser plume dynamics
Numerical modeling is used to investigate the physical mechanisms of the interaction of ultra-short (sub-picosecond) laser pulses with metallic targets. The laser–target interaction is modeled by using a one-d...
