Title :
Lasing action in air induced by ultrafast laser filamentation
Author :
Luo, Q. ; Liu, W. ; Chin, S.L.
Author_Institution :
Dept. de Phys., Laval Univ., Que., Canada
Abstract :
The backscattered fluorescence of nitrogen from long filaments generated by intense ultrafast Ti-sapphire laser pulses propagating in air is studied. It shows an exponential increase with increasing filament length, indicating amplified spontaneous emission (ASE).
Keywords :
air; atmospheric light propagation; backscatter; high-speed optical techniques; laser beams; nitrogen; photoluminescence; plasma production by laser; sapphire; solid lasers; superradiance; titanium; ASE; Al/sub 2/O/sub 3/:Ti; N; amplified spontaneous emission; backscattered fluorescence; filament length; lasing action; nitrogen; ultrafast Ti-sapphire laser pulses; ultrafast laser filamentation; Fluorescence; Laser transitions; Nitrogen; Optical propagation; Optical pulse generation; Optical pulses; Power lasers; Pulse amplifiers; Spontaneous emission; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics, 2003. CLEO '03. Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-748-2
