Spatial mode cleaning by femtosecond filamentation in air.
By studying the conical emission of a blue femtosecond laser filament in air, it is shown that self-improvement of the beams' spatial mode quality occurs for a self-guided laser pulse.
Prade
B
B
Laboratoire d'Optique Appliquée, Ecole Nationale Supérieure de Techniques Avancées, Ecole Polytechnique, Palaiseau, France.
Franco
M
M
Mysyrowicz
A
A
Couairon
A
A
Buersing
H
H
Eberle
B
B
Krenz
M
M
Seiffer
D
D
Vasseur
O
O