Abstract
We study the rovibrational polarization response of water vapor using a fully correlated optical Bloch equation approach employing data from the HITRAN database. For a 10-μm long-wave infrared pulse the resulting linear response is negative, with a negative nonlinear response at intermediate intensities and a positive value at higher intensities. For a model atmosphere comprised of the electronic response of argon combined with the rovibrational response of water vapor this leads to a weakened positive nonlinear response at intermediate intensities. Propagation simulations using a simplified noncorrelated approach show the resultant reduction in the peak filament intensity sustained during filamentation due to the presence of the water vapor.
Original language | English (US) |
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Article number | 043818 |
Journal | Physical Review A |
Volume | 96 |
Issue number | 4 |
DOIs | |
State | Published - Oct 9 2017 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics