• DOI:10.1088/0953-4075/47/20/204013
• Corpus ID: 119194725

Near infrared few-cycle pulses for high harmonic generation

@article{Driever2014NearIF,
  title={Near infrared few-cycle pulses for high harmonic generation},
  author={Steffen Driever and Konstantin B Holzner and Jean Christophe Delagnes and Nikita Fedorov and Martin Arnold and Damien Bigourd and F. Burgy and Dominique Descamps and {\'E}ric Cormier and Roland Guichard and Eric Constant and Amelle Za{\"i}r},
  journal={Journal of Physics B: Atomic, Molecular and Optical Physics},
  year={2014},
  volume={47}
}

• Steffen Driever, Konstantin B Holzner, +9 authors A. Zaïr
• Published 7 April 2014
• Physics
• Journal of Physics B: Atomic, Molecular and Optical Physics

We report on the development of intense tunable few-cycle pulses with central wavelengths ranging from 1.6 &mgr; m ?> to 2 &mgr; m ?> . These pulses were used as a proof of principle for high harmonic generation in atomic and molecular targets. In order to generate such pulses, we produced a filament in a four-bar krypton cell. Spectral broadening by a factor of two to three of a 40 fs near-infrared input pulse was achieved. The spectrally broadened output pulses were then compressed by fused silica plates down to the few-cycle regime close to the Fourier limit. The auto-correlation of these pulses revealed durations of ∼ three cycles for all investigated central wavelengths. Pulses with a central wavelength of 1.7 &mgr; m ?> and up to 430 &mgr; J ?> energy per pulse were employed to generate high-order harmonics in Xe, Ar, and N2. Moving to near-infrared few-cycle pulses opens the possibility of operating deeply in the non perturbative regime with a Keldysh parameter, &ggr; ≪⃒ 1 ?> . Hence, this source is suitable for the study of the non perturbative tunneling regime in most generating systems used for high-order harmonic generation and attoscience.