Abstract
The results of investigation of light filament self-reconstruction after penetration through the air gap in fused silica at anomalous and normal group velocity dispersion are presented. It is revealed that at anomalous dispersion the light bullet formed before the gap was recovered after passing some distance behind the gap up to 1 mm length. This distance increased with the gap length and the bullet pathway before the gap. At normal dispersion filament reconstruction does not occur for a gap larger than 0.1 mm due to dispersive pulse splitting into two subpulses.
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