Numerical investigation of ultrashort laser interaction with dielectric materials based on a plasma-temperature combined model

2017 ◽  
Vol 28 ◽  
pp. 508-514 ◽  
Author(s):  
Xiao Jia ◽  
Xin Zhao
Keyword(s):  
Numerical Investigation ◽  
Plasma Temperature ◽  
Dielectric Materials ◽  
Laser Interaction ◽  
Combined Model ◽  
Ultrashort Laser

scholarly journals Parametric generation of surface deformations in laser interaction with overdense plasmas

2002 ◽  
Vol 20 (2) ◽  
pp. 337-340 ◽  
Author(s):  
A. MACCHI ◽  
M. BATTAGLINI ◽  
F. CORNOLTI ◽  
T.V. LISSEIKINA ◽  
F. PEGORARO ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Laser Pulse ◽  
Fast Electron ◽  
Analytical Modeling ◽  
Ultrashort Laser Pulse ◽  
Laser Interaction ◽  
Parametric Generation ◽  
Surface Modes ◽  
Electron Generation ◽  
Ultrashort Laser

By analytical modeling and numerical simulation, we show that surface modes in moderately overdense plasmas may be excited parametrically by an intense, ultrashort laser pulse. This process has a feedback effect on fast electron generation and may seed a fast distortion of plasma “moving mirrors.”

Thermal and Thermomechanical Phenomena During Ultrafast Laser Interaction With Tissue

2000 ◽  
Author(s):  
Xinwei Wang ◽  
Xianfan Xu ◽  
Lisa X. Xu
Keyword(s):  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Dielectric Materials ◽  
Biological Tissues ◽  
Clinical Applications ◽  
Ultrafast Laser ◽  
Collateral Damage ◽  
Laser Interaction ◽  
Tissue Removal

Abstract Ultrafast (or ultrashort) pulsed laser ablation of biological tissue has drawn much attention due to the minimal collateral damage caused by laser irradiation. Many clinical applications of ultrafast laser ablation have been proposed, including ophthalmology, dentistry, and neurosurgery (Kim et al., 1998). During ultrafast laser interaction with biological tissues, which are dielectric materials, multiphonon absorption occurs which enhances the absorption of the laser beam in tissue. The tissue can then be heated rapidly to a high temperature, causing evaporation and tissue removal.

scholarly journals Non-adiabatic cluster expansion after ultrashort laser interaction

2008 ◽  
Vol 26 (1) ◽  
pp. 69-82 ◽  
Author(s):  
A.Ya. Faenov ◽  
A.I. Magunov ◽  
T.A. Pikuz ◽  
I.Yu. Skobelev ◽  
D. Giulietti ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Cluster Expansion ◽  
Plasma Electron ◽  
Laser Interaction ◽  
Homogeneous Plasma ◽  
X Ray ◽  
Rydberg Transitions ◽  
Ultrashort Laser ◽  
Pulse Contrast ◽  
Plasma Electron Density

AbstractWe used X-ray spectroscopy as a diagnostic tool for investigating the properties of laser-cluster interactions at the stage in which non-adiabatic cluster expansion takes place and a quasi-homogeneous plasma is produced. The experiment was carried out with a 10 TW, 65 fs Ti:Sa laser focused on CO2 cluster jets. The effect of different laser-pulse contrast ratios and cluster concentrations was investigated. The X-ray emission associated to the Rydberg transitions allowed us to retrieve, through the density and temperature of the emitting plasma, the time after the beginning of the interaction at which the emission occurred. The comparison of this value with the estimated time for the “homogeneous” plasma formation shows that the degree of adiabaticity depends on both the cluster concentration and the pulse contrast. Interferometric measurements support the X-ray data concerning the plasma electron density.

Multipeak emission of the fast electron beams along the target surface in ultrashort laser interaction with solid targets

2008 ◽  
Vol 15 (1) ◽  
pp. 013106 ◽  
Author(s):  
X. H. Yuan ◽  
Y. T. Li ◽  
M. H. Xu ◽  
Z. Y. Zheng ◽  
M. Chen ◽  
...  
Keyword(s):  
Fast Electron ◽  
Electron Beams ◽  
Target Surface ◽  
Laser Interaction ◽  
Ultrashort Laser
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