Title :
Demonstration of spontaneously generated conical waves during ultrashort laser pulse filamentation in air
Author :
Averchi, A. ; Faccio, D. ; Lotti, A. ; Trapani, P. Di ; Couairon, A. ; Papazoglou, D. ; Tzortzakis, S.
Author_Institution :
CNISM & Dept. of Phys. & Math., Universit´´a dell Insubria, Como
Abstract :
Measurements and simulations show that X-waves are spontaneously generated during filamentation in air. This explains the sub-diffractive propagation of filaments beyond the end of the plasma channel generated by multiphoton ionization.
Keywords :
high-speed optical techniques; light diffraction; multiphoton processes; optical self-focusing; photoionisation; plasma production by laser; X-waves; multiphoton ionization; plasma channel; spontaneously generated conical waves; subdiffractive propagation; ultrashort laser pulse filamentation; Diffraction; Focusing; Laser modes; Optical propagation; Optical pulse generation; Optical pulses; Plasma density; Plasma measurements; Pulse measurements; Supercontinuum generation; (190.5530) pulse propagation and temporal solitons; (190.5940) Self action effects; (320.6629) Supercontinuum generation;
Conference_Titel :
Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-55752-859-9
