Carrier-envelope-phase effects in ultrafast strong-field ionization dynamics of multielectron systems: Xe and CS2.

@article{Mathur2013CarrierenvelopephaseEI,
  title={Carrier-envelope-phase effects in ultrafast strong-field ionization dynamics of multielectron systems: Xe and CS2.},
  author={Deepak Mathur and Krithika Dota and Aditya K. Dharmadhikari and Jayashree A. Dharmadhikari},
  journal={Physical review letters},
  year={2013},
  volume={110 8},
  pages={
          083602
        }
}
Carrier-envelope-phase- (CEP) stabilized 5 and 22 fs pulses of intense 800 nm light are used to probe the strong-field ionization dynamics of xenon and carbon disulfide. We compare ion yields obtained with and without CEP stabilization. With 8-cycle (22 fs) pulses, Xe(6+) yields are suppressed (relative to Xe(+)) by 30%-50%, depending on phase, reflecting the phase dependence of nonsequential ionization and its contribution to the formation of higher charge states. Ion yields for Xe(q+) (q = 2… 

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References

SHOWING 1-10 OF 36 REFERENCES

Molecular symmetry effects in the ionization of CS 2 by intense few-cycle laser pulses

Few-cycle pulses of 800 nm light cause ionization and dissociation of CS 2 in the intensity and temporal regime where, by contemporary wisdom, rescattering is expected to dominate laser-molecule

Strong-field ionization of water by intense few-cycle laser pulses

Ionization of H 2 O is caused by four-cycle pulses of intense 800-nm light in the temporal regime where processes like enhanced ionization and spatial alignment are "switched off" and recollision

Many-electron dynamics of a Xe atom in strong and superstrong laser fields.

Investigation of ionization dynamics of a Xe atom exposed to intense 800-nm pulses of 20-fs duration in the extensive intensity range from 10(13)-10(18) W/cm(2) proves suppression of nonsequential ionization towards higher intensity and few optical cycle regimes.

Carrier-envelope phase-dependent quantum interferences in multiphoton ionization

The angular distribution of photoelectrons created by multiphoton ionization of xenon atoms by a few-cycle laser pulse shows a carrier-envelope phase (CEP) dependent asymmetry. A simple perturbative

Intense two-cycle laser pulses induce time-dependent bond hardening in a polyatomic molecule.

A time-dependent bond-hardening process is discovered in a polyatomic molecule (tetramethyl silane, TMS) using few-cycle pulses of intense 800 nm light; the relatively slower falloff of optical field in such pulses allows the initially trapped wave packet to leak out, thereby rendering TMS(+) unstable once again.

Fragmentation dynamics of methane by few-cycle femtosecond laser pulses.

The results demonstrated that the first-return recollision between the rescattered electron and the parent ion played a significant role in the fragmentation dynamics of the parent ions.

Few cycle dynamics of multiphoton double ionization.

The yield of Ne(2+) relative to Ne(+) with 12 fs pulses to be clearly less compared to 50 fs pulses in qualitative agreement with the theoretical model.

Polarization and energy stability of filamentation-generated few-cycle pulses.

It is shown that intensity clamping in the filament affords a major advantage in accomplishing a significant reduction in energy fluctuations compared to those inherent in the incident laser beam.

Routes to Control of H~2 Coulomb Explosion in Few-Cycle Laser Pulses

We have measured coincident ion pairs produced in the Coulomb explosion of H2 by 8–30 fs laser pulses at different laser intensities. We show how the Coulomb explosion of H2 can be experimentally

Progress in Ultrafast Intense Laser Science VII

We investigate ionization of Dirac hydrogen atom and hydrogenic ions of charge states Z using the relativistic intense-field theory of spin-resolved ionization process. We discuss the energy