Title :
Efficient on-axis third harmonic generation in a light filament
Author :
Schulz, E. ; Steingrube, D.S. ; Vockerodt, T. ; Binhammer, T. ; Morgner, U. ; Kovacev, M.
Author_Institution :
Centre for Quantum Eng. & Space-Time Res., Inst. of Quantum Opt. & QUEST, Hannover, Germany
Abstract :
Filamentation of ultra-short laser pulses in gases is an emerging technique for versatile applications reaching from pulse-compression in the few-cycle regime to frequency generation into the THz regime. Moreover, radiation in the short wavelength range is generated by filaments. Especially, the third harmonic (TH) is generated within a filament usually on a cone. In this paper, we demonstrate on-axis TH generation in a filament in air by establishing a pressure gradient. We report on an increase of the on-axis conversion efficiency by 2.5 orders of magnitude.
Keywords :
optical harmonic generation; optical pulse compression; optical pulse generation; THz regime; few-cycle regime; frequency generation; light filament; on-axis third harmonic generation; pulse-compression; ultra-short laser pulses; Focusing; Frequency conversion; Laser applications; Laser beams; Mirrors; Optical pulse generation; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics Europe (CLEO EUROPE/EQEC), 2011 Conference on and 12th European Quantum Electronics Conference
Conference_Location :
Munich
Print_ISBN :
978-1-4577-0533-5
Electronic_ISBN :
Pending
DOI :
10.1109/CLEOE.2011.5943023
