Attosecond Pulse Trains Generated Using Two Color Laser Fields

Mauritsson, Johan; Johnsson, Per; Gustafsson, E.; L’Huillier, Anne; Schafer, Kenneth J.; Gaarde, Mette B.

doi:10.1103/physrevlett.97.013001

Cited by 272 publications

(180 citation statements)

References 23 publications

Supporting

Mentioning

168

Contrasting

Unclassified

Order By: Relevance

“…Early experiments confirmed that energy, momentum, and parity are preserved when high harmonics are generated in two-color fields [10]. This introduced the potential to control the high-harmonic process [11][12][13], leading to the generation of attosecond pulse trains with individual pulses separated by the laser period [14] and new approaches to isolating a single attosecond pulse [15][16][17] and generating tunable extreme ultraviolet (XUV) radiation [18]. Recently, it has been shown that weak-field control of high harmonic generation allows attosecond pulses to be measured as they are being produced in the medium [19].…”

mentioning

confidence: 81%

See 1 more Smart Citation

Ultrahigh-Order Wave Mixing in Noncollinear High Harmonic Generation

et al. 2011

View full text Add to dashboard Cite

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=16925471&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=16925471&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. Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://doi.org/10.1103/PhysRevLett.106.023001Physical Review Letters, 106, 2, pp. 023001-1-023001-4, 2011-01-01 We show that noncollinear high harmonic generation (HHG) can be fully understood in terms of nonlinear optical wave mixing. We demonstrate this by superposing on the fundamental ! 1 field its second harmonic ! 2 of variable intensity in a noncollinear geometry. It allows us to identify, by momentum conservation, each field's contribution (n 1 ;n 2 ) to the extreme ultraviolet emission at frequency ¼ n 1 ! 1 þ n 2 ! 2 . We observe that the photon ( ) yield follows an n 2 power law on the ! 2 intensity, before saturation. It demonstrates that, although HHG is a highly nonperturbative process, a perturbation theory can still be developed around it.

show abstract

mentioning

confidence: 81%

“…Our work builds on a long history of experiments on using multiple color fields to produce high harmonics [10][11][12][13][14][15][16][17][18]. Early experiments confirmed that energy, momentum, and parity are preserved when high harmonics are generated in two-color fields [10].…”

mentioning

confidence: 99%

Ultrahigh-Order Wave Mixing in Noncollinear High Harmonic Generation

et al. 2011

View full text Add to dashboard Cite

show abstract

“…Smaller delays τ lead to overlap between the ac and dc components, which are separated by p 0 τ , thus disturbing the retrieval algorithm. Attosecond pulses separated by one IR laser cycle have been demonstrated in high-order harmonic generation (HHG) experiments with two colors (ω,2ω) [24]. Furthermore, the delay of two attosecond pulses can be controlled by means of a segmented mirror [25].…”

Section: Implementation Of Qspidermentioning

confidence: 99%

Retrieval of the amplitude and phase of the dipole matrix element by attosecond electron-wave-packet interferometry

2013

View full text Add to dashboard Cite

We extend the ideas of wave-packet interferometry [Remetter et al., Nat. Phys. 2, 323 (2006)] to implement the algorithm of spectral phase interferometry for direct electric-field reconstruction (SPIDER) for characterizing the amplitude and phase of electron wave packets. Single-photon ionization by an attosecond pulse launches an electron wave packet in the continuum. Ionization by a train of two attosecond pulses in the presence of a moderate infrared pulse creates an interferogram in the final photoelectron momentum distribution. From the interferogram, the complex electron wave function can be reconstructed. If the pulses are well characterized, the amplitude and phase of the bound-free dipole matrix element can be reconstructed over a wide energy range. This is demonstrated by application of the retrieval method to momentum distributions obtained by numerical solution of the time-dependent Schrödinger equation. The case of Coulombic potentials requires appropriate treatment of the laser-Coulomb coupled dynamics.

show abstract

“…In particular, it has been experimentally demonstrated that single and multiple attosecond laser pulses can be produced by means of the process of high-order harmonic generation (HHG) in rare gases [5,6]. As the length of the incident pulse decreases, the HHG peaks in the cutoff regime are replaced by one or a few pronounced supercontinuum patterns as individual adjacent peaks begin to merge with one another [7,8].…”

Section: Introductionmentioning

confidence: 99%

Effects of macroscopic propagation on spectra of broadband supercontinuum harmonics and isolated-attosecond-pulse generation: Coherent control of the electron quantum trajectories in two-color laser fields

Chu

2012

Phys. Rev. A

View full text Add to dashboard Cite

Recently it was shown that broadband supercontinuum harmonics can be produced from the long-trajectory electrons in the single-atom response by the coherent control of the electron trajectories through optimized two-color laser fields. Such supercontinuum harmonics can be superposed to generate an isolated sub-30-attosecond (as) pulse [Liu et al., Phys. Rev. A 84, 033414 (2011)]. In this paper, we investigate the effect of macroscopic propagation on the supercontinuum harmonic spectra and the subsequent attosecond-pulse generation of atomic hydrogen. The time-dependent Schrödinger equation is solved accurately and efficiently by means of the time-dependent generalized pseudospectral method. The effects of macroscopic propagation are investigated in near and far field by solving Maxwell's equation. The results show that the contribution of short-trajectory electron emission is increased when the macroscopic propagation is considered. However, the characteristics of the dominant long-trajectory electron emission (in the single-atom response case) are not changed, and an isolated 53 as pulse can be generated in the near field. Moreover, in the far field, the contribution of long-trajectory electron emission is still dominant for both on-axis and off-axis cases. As a result, an isolated 42 as pulse can be generated directly. Similar results are obtained when the atomic target position is changed. Therefore, the proposed method for the single ultrashort attosecond-pulse generation can be realized by means of the coherent control of the electron quantum paths in appropriately optimized two-color laser fields.

show abstract

Attosecond Pulse Trains Generated Using Two Color Laser Fields

Cited by 272 publications

References 23 publications

Ultrahigh-Order Wave Mixing in Noncollinear High Harmonic Generation

Ultrahigh-Order Wave Mixing in Noncollinear High Harmonic Generation

Retrieval of the amplitude and phase of the dipole matrix element by attosecond electron-wave-packet interferometry

Effects of macroscopic propagation on spectra of broadband supercontinuum harmonics and isolated-attosecond-pulse generation: Coherent control of the electron quantum trajectories in two-color laser fields

Contact Info

Product

Resources

About