Haut PDF Terahertz Radiation from Laser Induced Plasmas
Terahertz Radiation from Laser Induced Plasmas
... HAL Id: hal-01545493 https://hal.archives-ouvertes.fr/hal-01545493 Submitted on 22 Jun 2017 HAL is a multi-disciplinary open access archive for the deposit and dissemination of sci- entific research documents, whether ...
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Dynamics of UV short pulse laser-induced plasmas from a ceramic material “titanium carbide”: a hydrodynamical out of equilibrium investigation
... rates induced under the same conditions from a pure titanium ...of laser induced plasmas from a ceramic ...of laser induced plumes under the same conditions ...
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Terahertz emission from laser-driven gas-plasmas: a plasmonic point of view
... in laser-induced gas- ...the terahertz emission spectra ...significant terahertz pulse shortening and spectral broadening can be achieved by exploiting the transverse driving laser beam ...
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Theory of terahertz emission from femtosecond-laser-induced micro-plasmas
... diation from femtosecond laser-induced gas plasmas by means of theoretical modeling and numerical ...electric laser field (IC) as well as ponderomotive, radiation pressure, ...
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Strong Enhancement of Terahertz Radiation from Laser Filaments in Air by a Static Electric Field
... the laser intensity in the ...one induced by the static transverse field E 2 ...resulting from their superposition, one can estimate the relative strength of the two fields, and deduce the ...
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Resonant Effects in Terahertz Generation with Laser-Induced Gas Plasmas
... Resonant Effects in Terahertz Generation with Laser-Induced Gas Plasmas I. Thiele 1,2 , B. Zhou 3 , A. Nguyen 4 , E. Smetanina 1,5 , R. Nuter 1 , P. González de Alaiza Martínez 1 , K. J. ...
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Terahertz spectroscopy from air plasmas created by two-color femtosecond laser pulses: The ALTESSE project
... Terahertz spectroscopy from air plasmas created by two-color femtosecond laser pulses: The ALTESSE project L. Berg´ e 1 , K. Kaltenecker 2 , S. Engelbrecht 3 , A. Nguyen 1 , S. Skupin 4 , L. ...
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Broadband terahertz emission from two-color femtosecond-laser-induced microplasmas
... THz radiation is to employ laser-induced gas plasmas [ 4 , 5 ...exploit laser-induced microplasmas [ 6 ] that allow to use smaller driving ...to laser intensities above 10 ...
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Broadband terahertz radiation from two-color mid- and far-infrared laser filaments in air
... are indicated by gray lines. creasing the pump wavelength, longer filaments form (see also [27]). Due to the smaller Rayleigh range, the 10.6- µm pump pulse starts its self-focusing sequence earlier. Figure 1(e) ...
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Plasmonic Resonances Affecting Terahertz Generation in Laser-Induced Gas-Plasmas
... HAL Id: hal-01924405 https://hal.archives-ouvertes.fr/hal-01924405 Submitted on 15 Nov 2018 HAL is a multi-disciplinary open access archive for the deposit and dissemination of sci- entific research documents, whether ...
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Direct modulation and bandwitdh measurement of terahertz quantum cascade laser
... Cascade Laser, Modulation, Modelling ...improved. Terahertz QCL working above liquid nitrogen temperature, 2, 3 and even at room temperature by intracavity difference-frequency generation, have been ...
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Coherent control of boosted terahertz radiation from air plasma pumped by femtosecond three-color sawtooth field
... femtosecond laser fields, providing a sawtooth- like ...femtosecond laser pulses at 800 nm. It was observed that the THz radiation amplitude produced in air with this phase-optimized three-color ...
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Terahertz radiation for the characterization of plasmonic nanoparticles and its biomedical applications.
... 4 CONCLUSION Photoexcitation of light-sensitive agents, such as nanoparticles (NPs) introduced into the human body, can affect biological tissue and cells in various ways. Chemical reactions (photochemical), biological ...
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Wavelength scaling of terahertz pulse energies delivered by two-color air plasmas
... expected from pho- tocurrents and the steeper increase reported in [3, 10] follows from inconsistencies in the beam spatial diameters and pulse du- rations that may vary a lot in OPAs [ 11 ...the ...
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Generation of intense terahertz sources by ultrashort laser pulses
... 1.5-cm laser spark formed near the geometrical focus locates the emitted THz radiation, which is collimated using an off-axis parabolic mirror ...frequency-angular terahertz spectrum, a Michelson ...
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Towards compact efficient fs-laser-induced THz sources from microplasmas
... In the strongest focusing case, the only 10-µm-long microplasma acts as a point-like source for THz wave- lengths. Its torus-shaped radiation profile is sketched in Fig. 1 (a-b), where the fundamental harmonic ...
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Short-pulse laser-produced plasmas
... in laser science and optical technologies have opened new possibilities in the study of laser-produced ...trafast laser physics. The interactions of ultra high-intensity laser pulses with ...
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New Journal of Physics Mechanisms of forward laser harmonic emission from thin overdense plasmas
... distributions ( J y (x, t) in the boosted frame) in these two cases. high frequencies in the light spectrum: this effect thus corresponds to the usual Doppler upshift induced by a relativistic motion of the ...
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Amplification of transition-Cherenkov terahertz radiation of femtosecond filament in air
... emission from laser filament is enhanced by three orders of magnitude if one applies a static electric field along the filament ...angular radiation pattern and the polarization characteristics of ...
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Space and time characterization of laser-induced plasmas for applications in chemical analysis and thin film deposition
... estimated from its shape (hemispherical, conical, ...after laser shots and for the three ambient gases ...after laser shots, which is simply due to ...
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