Direct measuring of single-cycle mid-IR light bullets path length in LiF by the laser coloration method

A colour-centre structure formed in a LiF crystal under filamentation of a femtosecond mid-IR laser pulse with a power slightly exceeding the critical power for self-focusing has been experimentally and theoretically investigated. A single-cycle light bullet was recorded for the first time by observ...

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Bibliographic Details
Main Authors: Chekalin, Sergey, Kompanets, Victor, Kuznetsov, Andrey, Dormidonov, Alexander, Kandidov, Valerii
Format: Conference Proceeding
Language:English
Subjects:
Color centers
Crystal structure
Femtosecond pulses
Laser beams
Lasers
Lithium fluoride
Projectiles
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Summary:A colour-centre structure formed in a LiF crystal under filamentation of a femtosecond mid-IR laser pulse with a power slightly exceeding the critical power for self-focusing has been experimentally and theoretically investigated. A single-cycle light bullet was recorded for the first time by observation of strictly periodic oscillations for the density of the color centers induced in an isotropic LiF crystal under filamentation of a laser beam with a wavelength tuned in the range from 2600 to 3900 nm, which is due to the periodic change in the light field amplitude in the light bullet formed under filamentation under propagation in dispersive medium. The light bullet path length was not more than one millimeter.
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/201716102011