Details
| Original language | English |
|---|---|
| Article number | 033806 |
| Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
| Volume | 85 |
| Issue number | 3 |
| Publication status | Published - 12 Mar 2012 |
| Externally published | Yes |
Abstract
As previous theoretical results recently revealed, a Kramers-Kronig transform of multiphoton absorption rates allows for a precise prediction on the dispersion of the nonlinear refractive index n2 in the near infrared. It was shown that this method allows reproduction of recent experimental results on the importance of the higher-order Kerr effect. Extending these results, the current manuscript provides the dispersion of n2 for all noble gases in excellent agreement with reference data. It is furthermore established that the saturation and inversion of the nonlinear refractive index is highly dispersive with wavelength, which indicates the existence of different filamentation regimes. While shorter laser wavelengths favor the well-established plasma clamping regime, the influence of the higher-order Kerr effect (HOKE) dominates in the long-wavelength regime.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
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In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 85, No. 3, 033806, 12.03.2012.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Kramers-Kronig relations and high-order nonlinear susceptibilities
AU - Brée, Carsten
AU - Demircan, Ayhan
AU - Steinmeyer, Günter
PY - 2012/3/12
Y1 - 2012/3/12
N2 - As previous theoretical results recently revealed, a Kramers-Kronig transform of multiphoton absorption rates allows for a precise prediction on the dispersion of the nonlinear refractive index n2 in the near infrared. It was shown that this method allows reproduction of recent experimental results on the importance of the higher-order Kerr effect. Extending these results, the current manuscript provides the dispersion of n2 for all noble gases in excellent agreement with reference data. It is furthermore established that the saturation and inversion of the nonlinear refractive index is highly dispersive with wavelength, which indicates the existence of different filamentation regimes. While shorter laser wavelengths favor the well-established plasma clamping regime, the influence of the higher-order Kerr effect (HOKE) dominates in the long-wavelength regime.
AB - As previous theoretical results recently revealed, a Kramers-Kronig transform of multiphoton absorption rates allows for a precise prediction on the dispersion of the nonlinear refractive index n2 in the near infrared. It was shown that this method allows reproduction of recent experimental results on the importance of the higher-order Kerr effect. Extending these results, the current manuscript provides the dispersion of n2 for all noble gases in excellent agreement with reference data. It is furthermore established that the saturation and inversion of the nonlinear refractive index is highly dispersive with wavelength, which indicates the existence of different filamentation regimes. While shorter laser wavelengths favor the well-established plasma clamping regime, the influence of the higher-order Kerr effect (HOKE) dominates in the long-wavelength regime.
UR - http://www.scopus.com/inward/record.url?scp=84858420023&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.85.033806
DO - 10.1103/PhysRevA.85.033806
M3 - Article
AN - SCOPUS:84858420023
VL - 85
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
SN - 1050-2947
IS - 3
M1 - 033806
ER -