Applications of high-order harmonics

L’Huillier, Anne; Descamps, D.; Johansson, Ann-Charlotte; Norin, Johan; Mauritsson, Johan; Wahlström, Claes‐Göran

doi:10.1140/epjd/e2003-00072-2

Cited by 52 publications

(22 citation statements)

References 31 publications

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“…By utilizing the exchange term, harmonic emission from a closed-shell 4-electron system can be interpreted as a complete Hartree-Fock wave function. High harmonic generation (HHG) takes place during the interaction of intense femtosecond laser light with gasphase atoms or molecules [1][2][3]. HHG from aligned molecules is sensitive to the angle of the molecular frame relative to the laser electric field polarization [4 -8].…”

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confidence: 99%

High Harmonic Generation and Molecular Orbital Tomography in Multielectron Systems: Beyond the Single Active Electron Approximation

et al. 2006

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Access and use of this website and the material on it are subject to the Terms and Conditions set forth at High harmonic generation and molecular orbital tomography in multielectron systems: beyond the single active electron approximation Patchkovskii, Serguei; Zhao, Zengxiu; Brabec, Thomas; Villeneuve, D. NRC Publications Record / Notice d'Archives des publications de CNRC:http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=12328441&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=12328441&lang=fr READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca.

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High Harmonic Generation and Molecular Orbital Tomography in Multielectron Systems: Beyond the Single Active Electron Approximation

et al. 2006

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“…We compare the measurements with calculations in both the length gauge and the velocity gauge and show that the two gauges imply a different de Broglie wavelength. DOI High harmonic generation (HHG) is a process involving intense femtosecond laser light and gas-phase atoms or molecules [1][2][3]. It produces a coherent [4], collimated beam of extreme ultraviolet (xuv) radiation that is composed of a train of attosecond pulses.…”

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High Harmonic Generation and the Role of Atomic Orbital Wave Functions

et al. 2007

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Access and use of this website and the material on it are subject to the Terms and Conditions set forth at NRC Publications Record / Notice d'Archives des publications de CNRC:http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=21276203&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=21276203&lang=fr READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca.

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“…This led to an important increase in the energy range accessible by HHG, with experiments reaching the water window, as well as orders over 200. Also, first applications of high harmonics for atomic and molecular spectroscopy and surface physics were demonstrated [27]. However, the perspective to detect attosecond pulses experimentally seemed remote, because autocorrelation techniques were difficult to implement.…”

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High‐Order Harmonic Generation and Attosecond Light Pulses: An Introduction

L’Huillier

2014

Attosecond and XUV Physics

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This chapter describes how the understanding of high-order harmonic generation (HHG) and the generation of attosecond pulses progressed since the first experiments, which were performed at the end of the 1980s. The text describes how the ideas arose, as perceived by the author of this chapter. It is neither a detailed and comprehensive review nor a documented historical background. Early Work, 1987-1993Somewhat surprisingly, HHG was not discovered in the nonlinear optics community, but by scientists interested in the response of atoms to intense laser fields. In nonlinear optics, the general (and quite reasonable) understanding was that highorder processes are less probable than low-order processes. Consequently, on a not so successful route toward vacuum ultraviolet light, researchers used ultraviolet radiation in order to start with VUV photons. At the same time, a lot of progress in laser technology allowed scientists to focus radiation at very high intensities, reaching 10 13 10 15 W/cm 2 . Atoms, when exposed to such intense radiation, get ionized by absorbing several photons. Above-threshold-ionization and multiple-ionization were observed as unexpected results of such experiments.One experimental idea was to detect fluorescence emitted by excited atoms or ions that were produced during strong field excitation. To this end, the pressure of sample atoms in the interaction chamber had to be increased: gas jets were installed, and photon detectors were placed along the laser propagation axis. First results for HHG from VUV radiation were obtained by Rhodes and his co-workers, using a 248-nm excimer laser with high laser intensity [1]. Strong fluorescence was seen from Ar, Kr and Xe ions, together with high harmonics up to the 17th harmonic in Ne. Shortly afterward, high-order harmonics were observed in Xe, Kr and Ar using a 30-ps Nd:YAG laser (1064 nm) [2]. The HHG spectra exhibited a characteristic behavior, with a rapid intensity decrease for the first orders, a plateau from the seventh harmonic up to a very high order (e.g., the 29th in Ar) and an abrupt cutoff.Attosecond and XUV Physics, First Edition. Edited by Thomas Schultz and Marc Vrakking.

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Applications of high-order harmonics

Cited by 52 publications

References 31 publications

High Harmonic Generation and Molecular Orbital Tomography in Multielectron Systems: Beyond the Single Active Electron Approximation

High Harmonic Generation and Molecular Orbital Tomography in Multielectron Systems: Beyond the Single Active Electron Approximation

High Harmonic Generation and the Role of Atomic Orbital Wave Functions

High‐Order Harmonic Generation and Attosecond Light Pulses: An Introduction

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