1996
DOI: 10.1109/2944.571779
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Harmonic generation in a UV laser plasma

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Cited by 23 publications
(9 citation statements)
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“…No variations in reflectivity of the fundamental radiation were observed in that case. The efficiency of 2ω harmonic generation steadily dropped for longer pulses, as was previously reported in [22,27]. At the same time, the 3ω/2 yield was insignificantly decreased in that case without specific peculiarities reported by Veisz et al [22], who observed a maximum of 3ω/2 radiation conversion efficiency at 350 fs range.…”
Section: Generation Of Backscattered 2ω and 3ω/2 Harmonics Of Femtosesupporting
confidence: 68%
“…No variations in reflectivity of the fundamental radiation were observed in that case. The efficiency of 2ω harmonic generation steadily dropped for longer pulses, as was previously reported in [22,27]. At the same time, the 3ω/2 yield was insignificantly decreased in that case without specific peculiarities reported by Veisz et al [22], who observed a maximum of 3ω/2 radiation conversion efficiency at 350 fs range.…”
Section: Generation Of Backscattered 2ω and 3ω/2 Harmonics Of Femtosesupporting
confidence: 68%
“…Since it is expected that LDI plays a minor role on femtosecond timescales, linear theory should apply to even higher e-foldings than for long laser pulses until the instability saturates through, for example, wavebreaking. The deduced intensities using 0 ϭ135 fs are without saturation: (3.9Ϯ0.5)ϫ10 15 We calculated the collisional absorption of the incident laser pulse for propagation up to the 1/4n c and found that it is negligible, but ionization defocusing in the preplasma is significant for the fundamental. Refraction of the threehalves harmonic in 45°by the laser generated density profile is negligible due to the perpendicular propagation to the laser direction.…”
Section: ͑1͒mentioning
confidence: 99%
“…The second harmonic signal increases with shorter pulses, as found previously by others. 15 By contrast, the yield of the 3 0 /2 radiation has a maximum at (350Ϯ50) fs.…”
mentioning
confidence: 99%
“…Although this method is, in principle, limited by the ionization of the gas, this difficulty was overcome by applying ultrashort pulses~Chang et al, 1997;Spielmann et al, 1997!, thus reaching very short wavelength radiation up to 0.5 keV photon energy. Even a small, table-top KrF laser with nonrelativistic intensity generated harmonics to the wavelength of 82.8 nm Földes et al, 1996!. In this article, some aspects of high-harmonics generation are summarized, especially with the aim of showing the differences among results obtained with lasers of different parameters, that is, wavelength and pulse duration. As early as 1980, high harmonics were obtained from laserplasma interactions with IR laser beams.…”
Section: Introductionmentioning
confidence: 99%