Title :
Frequency up shift of a high intense laser pulse in a gas filled capillary plasma
Author :
Viswakarma, N. ; Sharma, A.K.
Author_Institution :
Centre for Energy Studies, Indian Inst. of Technol., New Delhi, India
Abstract :
Summary form only given. A high intensity laser pulse propagates through the H2-gas filled capillary discharge waveguide with parabolic radial electron density profile. The capillary comprises of alumina tube. Laser causes rapid tunnel ionization of aluminium (ionization potential /spl sim/5.986 V) and oxygen (ionization potential /spl sim/13.6 V) introduced into the plasma from the capillary wall. The increasing plasma density leads to a decreasing refractive index, modulating the phase of the laser as it propagates and causing frequency upshift of the laser.
Keywords :
photoionisation; plasma density; plasma filled waveguides; plasma light propagation; refractive index; Al/sub 2/O/sub 3/; H/sub 2/-gas filled capillary discharge waveguide; alumina tube; capillary wall; frequency upshift; gas filled capillary plasma; high intensity laser pulse propagation; ionization potential; parabolic radial electron density profile; plasma density; refractive index; tunnel ionization; Aluminum; Electrons; Frequency; Gas lasers; Ionization; Optical propagation; Optical pulses; Plasma density; Plasma waves; Waveguide lasers;
Conference_Titel :
Plasma Science, 2004. ICOPS 2004. IEEE Conference Record - Abstracts. The 31st IEEE International Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-8334-6
DOI :
10.1109/PLASMA.2004.1340254
