Dynamics of CO sub(2) laser pulse filamentation in air influenced by spectrally selective molecular absorption

The theoretical aspects of self-focusing and filamentation of high-power pulsed CO sub(2) laser radiation with carrier wavelength 10.6 [mu]m in air are considered. The spectrally selective molecular absorption of realistic atmospheric air is included in the theoretical model. In the conditions of st...

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Veröffentlicht in:Applied optics (2004) 2014-01, Vol.53 (25), p.5641-5648
Hauptverfasser: Geints, Yuri E, Zemlyanov, Alexander A
Format: Artikel
Sprache:eng
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Zusammenfassung:The theoretical aspects of self-focusing and filamentation of high-power pulsed CO sub(2) laser radiation with carrier wavelength 10.6 [mu]m in air are considered. The spectrally selective molecular absorption of realistic atmospheric air is included in the theoretical model. In the conditions of strong pulse self-phase modulation and pulse spectral broadening, the supercontinual radiation spectrum is substantially influenced by the selective atmospheric absorption that destabilizes the filamentation process and results in considerable shortening of the filamentation length.
ISSN:1559-128X
2155-3165
DOI:10.1364/AO.53.005641