Results 131 to 140 of about 261,800 (180)
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Very High Order Harmonic Generation
Ultrafast Phenomena, 1990Most of the previous experiments on harmonic generation in a gaseous medium used short incident wavelengths in order to obtain the shortest generated wavelengths. The purpose of the paper is to discuss experimental measurements of VUV light emission (355 - 30 nm) and in particular harmonic generation in a rare gas medium irradiated by an intense 1064 ...
L.A. Lompré +3 more
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Anomalous high-order harmonic generation
Journal of Physics B: Atomic, Molecular and Optical Physics, 2004We present experimental harmonic spectra showing anomalously high orders generated at low laser intensities (around 2 × 1013 W cm−2) in argon, krypton and xenon. These high orders cannot be explained with the usual three step model that predicts the existence of a sharp cut-off after the region of constant efficiency called the plateau: the observed ...
Valentin, C. +9 more
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Dramatic Enhancement of High-Order Harmonic Generation
Physical Review Letters, 2007We present a dramatic enhancement [Phys. Rev. Lett. 91, 043002 (2003)] of high-order harmonic generation by simultaneous irradiation of booster harmonics. A key feature of our experiment is the use of mixed gases (Xe and He) with different ionization energies.
Eiji J, Takahashi +4 more
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Attosecond pulse generation using high-order harmonics
Conference on Lasers and Electro-Optics-Europe, 1998Recent advances in femtosecond laser technology enable us to generate high-order harmonics in the extreme ultraviolet region. A number of studies have been performed with models which lead to the understanding of physics involved in the harmonic generation.
A. Suda, F. Le Kien, K. Midorikawa
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High-Order Harmonic Generation in Aligned Molecules
Physical Review Letters, 2001Physical Review ...
Castillejo, M. +4 more
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High-order harmonic generation and high-order parametric amplifiers
Applications of High Field and Short Wavelength Sources VIII, 1999We report on our progress in investigations of high-order harmonic generation and frequency mixing processes in gaseous and plasma media.
B. Wellegehausen +4 more
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Principle of High-order Harmonic Generation
Physics and High Technology, 2023High-order harmonic generation (HHG) is a highly nonlinear phenomenon that produces a numerous orders of harmonics. The generated harmonic orders can range from tens to several hundreds, depending on the ionization potential of the target medium and the intensity of the laser.
Hyung Taek KIM, Hyeok YUN
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High-Order Harmonic Generation in Laser-Product Ions
Shortwavelength V: Physics with Intense Laser Pulses, 1993We have demonstrated high-order harmonic generation using ions in laser-produced plasmas. Ions of various elements in laser-produced plasmas have been used as nonlinear media for production of coherent short wavelength radiation.
, Kubodera +6 more
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Molecular High Order Harmonic Generation
2008We present, in this chapter, numerical results of high order harmonic generation spectra (HOHG), in the Born-Oppenheimer approximation, of the diatomic molecular ion H+ 2 and the linear triatomic molecule H2+ 3 under strong laser fields. We revisit, first, the standard electron classical re-collision model.
Andre D. Bandrauk +3 more
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Angularly-resolved High-order Harmonic Generation in Helium
Journal of Modern Optics, 1994We report the observation of harmonics up to the 119th in helium, generated using a 1.053-\ensuremath{\mu}m, 1-ps chirped-pulse-amplification laser at intensities up to 3\ifmmode\times\else\texttimes\fi{}${10}^{14}$ W/${\mathrm{cm}}^{2}$, and the measurement of their far-field spatial distribution.
, Tisch +5 more
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