Femtosecond laser-induced cone emission in dense cesium vapor (CROSBI ID 115702)
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Aumiler, Damir ; Ban, Ticijana ; Pichler, Goran
engleski
Femtosecond laser-induced cone emission in dense cesium vapor
We report the observation of cone emission generated when 10-nJ, 100-fs laser pulses in the 730– 770 nm wavelength range are transmitted through a dense cesium vapor. The spatial and spectral characteristics of the observed cone emission were studied experimentally. Cone angle dependence on the laser wavelength, laser average power, and Cs atomic and molecular concentrations were investigated. The cone emission (CE) was only observed when the laser beam self-focused after passing through the medium. We identify the self-phase modulation as a dominant mechanism for CE generation in our experiment.
conical emission; cesium
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