Title :
Picosecond ionization dynamics in femtosecond filaments at high pressures
Author :
Xiaohui Gao ; Patwardhan, Gauri ; Schrauth, Samuel ; Daiwei Zhu ; Gaeta, Alexander L.
Author_Institution :
Sch. of Appl. & Eng. Phys., Cornell Univ., Ithaca, NY, USA
Abstract :
We observe a 3-fold increase in the electron density within 30 picoseconds after the filamentary propagation of femtosecond pulses in 60-bar argon gases. This suggests that electron-impact ionization dominates on this time scale.
Keywords :
argon; electron impact ionisation; high-pressure effects; high-speed optical techniques; Ar; argon gases; electron density; electron-impact ionization; femtosecond filaments; filamentary propagation; high pressures; picosecond ionization dynamics; pressure 60 bar; time scale; Argon; Delays; Ionization; Plasmas; Probes; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA
