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[PDF] Top 20 THz field engineering in two-color femtosecond filaments using chirped and delayed laser pulses

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THz field engineering in two-color femtosecond filaments using chirped and delayed laser pulses

THz field engineering in two-color femtosecond filaments using chirped and delayed laser pulses

... chirping and delaying several ionizing two-color light pulses in order to engineer terahertz (THz) wave generation in ...that two chirped pulses can ... Voir le document complet

13

Coherent Secondary Radiation from Femtosecond Laser Filaments

Coherent Secondary Radiation from Femtosecond Laser Filaments

... ] and earth sciences [ Waters 06 ]. THz waves provide a useful diagnostic tool for quality control [ Hu 95 ], restoration of objects of cultural her- itage [ Jackson 08 , Fillippidis 12 ], food industry ... Voir le document complet

165

THz Emissions from Air-Plasmas Created by Mid-and Far-Infrared Two-Color Femtosecond Pulses

THz Emissions from Air-Plasmas Created by Mid-and Far-Infrared Two-Color Femtosecond Pulses

... study THz emission by two-color femtosecond filaments in air using mid- to far-infrared pump ...10.6-µm laser pulses can produce THz fields with ... Voir le document complet

3

Spectral dynamics of THz pulses generated by two-color laser filaments in air: the role of Kerr nonlinearities and pump wavelength

Spectral dynamics of THz pulses generated by two-color laser filaments in air: the role of Kerr nonlinearities and pump wavelength

... (instantaneous and delayed) in filament-driven THz pulse ...the THz generation process over long propagation distances, even in intensity regimes where the photocurrent mechanism ... Voir le document complet

22

Broadband terahertz radiation from two-color mid- and far-infrared laser filaments in air

Broadband terahertz radiation from two-color mid- and far-infrared laser filaments in air

... study THz emission by two-color femtosecond filaments in air using pump wavelengths λ 0 from ...long filaments created by a ...yields and GV/m field ... Voir le document complet

6

Impact of the pump wavelength in THz emissions by two-color femtosecond laser filaments in air

Impact of the pump wavelength in THz emissions by two-color femtosecond laser filaments in air

... [1]. In air, femtosecond filaments result from the self-focusing of ultrashort light pulses that couple to their own plasma channel and stay self-guided upon extended paths at high ... Voir le document complet

2

Commensurate Two-Quantum Coherences Induced by Time-Delayed THz Fields

Commensurate Two-Quantum Coherences Induced by Time-Delayed THz Fields

... electromagnetic field that interacts resonantly with a mo- lecular dipole moment [ 1 – 4 ] or by a femtosecond optical field that interacts nonresonantly with a molecular polar- izability anisotropy ... Voir le document complet

6

Improved laser glass cutting by spatio-temporal control of energy deposition using bursts of femtosecond pulses

Improved laser glass cutting by spatio-temporal control of energy deposition using bursts of femtosecond pulses

... 4. Femtosecond bursts for glass cutting applications ...by using Bessel beam Strong material modifications associated with micro-cracks in the region of laser absorption considerably weakens ... Voir le document complet

13

Amorphization in crystalline tellurium by femtosecond pulses

Amorphization in crystalline tellurium by femtosecond pulses

... pulse and found the amorphization process was not very sensitive to the pulse width, shown in ...with two identical but weaker pump ...the two pumps were separated by 100 ps, which is ... Voir le document complet

4

Two-colour generation in a chirped seeded free-electron laser: a close look

Two-colour generation in a chirped seeded free-electron laser: a close look

... vacuum-ultraviolet pulses using electron storage rings: a new bright light source for experiments,” ...Zangrando, and M. Zangrando, “Highly coherent and stable pulses from the FERMI ... Voir le document complet

15

Numerical analysis of broad band fiber optical parametric amplifiers pumped by two chirped pulses

Numerical analysis of broad band fiber optical parametric amplifiers pumped by two chirped pulses

... signal. In this manuscript, we are investigated the parametric pro- cess with two pump pulses with large ...use chirped pulses in- stead of ...signal and pumps are ... Voir le document complet

10

Backward lasing of singly ionized nitrogen ions pumped by femtosecond laser pulses

Backward lasing of singly ionized nitrogen ions pumped by femtosecond laser pulses

... optical pulses in a cavity-free manner. In this paper, we report on backward lasing at ...molecules, in addition to the previously observed lasing in the forward direction [ 2, 3, 5-9, ... Voir le document complet

9

Pressure atomizer spray field velocity analysis using two-color PIV

Pressure atomizer spray field velocity analysis using two-color PIV

... Access and use of this website and the material on it are subject to the Terms and Conditions set forth at Pressure atomizer spray field velocity analysis using two-color ... Voir le document complet

4

In vivo modulation of morphogenetic movements in Drosophila embryos with femtosecond laser pulses

In vivo modulation of morphogenetic movements in Drosophila embryos with femtosecond laser pulses

... pulse and the pulse surface density d pulse (number of pulses received per surface unit), which are related to the laser average power and the scanning speed, ...the laser power ... Voir le document complet

6

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                                                                    fr

en fr Glass on glass welding by femtosecond laser pulses Assemblage de verre sur verre par impulsions laser femtosecondes

... impulsions laser ultracourtes et ma- tériaux transparents En régime classique, lorsqu’un faisceau laser de faible densité de puis- sance se propage dans un matériau transparent, ni le matériau n’est impacté ... Voir le document complet

181

Radiofrequency conical emission from femtosecond filaments in air

Radiofrequency conical emission from femtosecond filaments in air

... shown in Fig. 1 . The measurements were performed outdoor, in a free environment, to avoid unwanted ...The laser used for this experiment was the TERAMOBILE 11 , a CPA laser chain based on ... Voir le document complet

5

Strong field multiphoton inversion of a three-level system using shaped ultrafast laser pulses

Strong field multiphoton inversion of a three-level system using shaped ultrafast laser pulses

... system using a single shaped ultrafast laser ...optimal pulses and numerical integra- tion of the Shro¨dinger ...energy. In the case of multiphoton population trans- fer with a single ... Voir le document complet

5

Laser structuration of dielectric materials by a train of femtosecond pulses through cumulative effects

Laser structuration of dielectric materials by a train of femtosecond pulses through cumulative effects

... 7 laser pulses [1] with parameters: 1030 nm, 470 fs, ...electric field originates leading to the formation of local nonlinear optical ...on laser heating, heat diffusion, and ... Voir le document complet

3

Confined longitudinal acoustic phonon modes in free-standing Si membranes coherently excited by femtosecond laser pulses

Confined longitudinal acoustic phonon modes in free-standing Si membranes coherently excited by femtosecond laser pulses

... Lower panels 共b兲 and 共d兲 of Fig. 2 show the Fourier spec- tra calculated for the two investigated membranes. An analy- sis of the results of the simulations points out that the con- tribution of the PE ... Voir le document complet

5

Femtosecond spectral electric field reconstruction using coherent transients

Femtosecond spectral electric field reconstruction using coherent transients

... the two spectral shears re- move constraints of usual interferometric technics : same spectral domain, interferometric control of delay, tempo- ral step small enough to resolve ...measurements in the ... Voir le document complet

5

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