Title :
Exponential enhancement of terahertz emission by increasing length of plasma filament pumped by femtosecond laser pulses
Author :
Shin, J.-H. ; Jin, Z. ; Hosokai, T. ; Kodama, R.
Author_Institution :
Grad. Sch. of Eng., Osaka Univ., Suita, Japan
Abstract :
We have demonstrated an order of magnitude increase in terahertz (THz) power by creating an asymmetric plasma filament whose density decreases gradually in its tail. Comparison between models with and without accounting for amplification indicates amplification of the THz wave in the plasma.
Keywords :
high-speed optical techniques; optical pumping; plasma density; plasma production by laser; terahertz wave generation; asymmetric plasma filament; femtosecond laser pulses; optical pumping; terahertz emission; terahertz wave amplification; Educational institutions; Laser modes; Plasma measurements; Plasmas; Power lasers; Power measurement; Pulse measurements;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on
Conference_Location :
Wollongong, NSW
Print_ISBN :
978-1-4673-1598-2
Electronic_ISBN :
2162-2027
DOI :
10.1109/IRMMW-THz.2012.6380198
