Open AccessWater vapor based dispersion management in a high-pressure gas cell
Author(s) -
N. A. Panov,
D. E. Shipilo,
В. О. Компанец,
Iriikolaeva,
С. В. Чекалин,
O.G. Kosareva
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1692/1/012019
Subject(s) - dispersion (optics) , bar (unit) , water vapor , wavelength , materials science , femtosecond , optics , infrared , pulse (music) , absorption (acoustics) , analytical chemistry (journal) , conical surface , atomic physics , molecular physics , chemistry , optoelectronics , physics , laser , meteorology , chromatography , organic chemistry , detector , composite material
We use a mixture of a high pressure gas with a minor (about 1 percent) addition of variable density water vapor to control group velocity dispersion of a near-infrared femtosecond pulse and switch it from normal to anomalous regime in the short-wavelength vicinity of the absorption band. We have shown numerically the formation of typical for anomalous dispersion O-wave frequency-angular spectrum with full suppression of conical emission on the short-wavelength side for 1.3-μm femtosecond pulse filamenting in the mixture of 30-bar nitrogen and 0.4-bar water vapor.