Title :
Measurement of the superluminal group velocity of an ultrashort Bessel beam pulse
Author :
Alexeev, I. ; Kim, K.Y. ; Milchberg, H.M.
Author_Institution :
Inst. for Phys. Sci. & Technol., Maryland Univ., College Park, MD, USA
Abstract :
Summary form only given. We measured the group velocity of an ultrashort optical Bessel beam pulse over its entire depth of field using two diagnostics that are sensitive to the extremely rapid generation of plasma through field ionization of argon. The almost stationary plasma that remains after field ionization ensures saturation.
Keywords :
Bessel functions; field ionisation; laser beams; optical pulse generation; plasma production by laser; electromagnetic wave equation; field ionization; plasma generation; pulse-induced ionization track; pump-probe delay; saturation; stationary plasma; superluminal group velocity; ultrashort optical Bessel beam pulse; Bessel functions; Ionization; Laser beams; Plasma generation;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2002. QELS '02. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Long Beach, CA, USA
Print_ISBN :
1-55752-708-3
DOI :
10.1109/QELS.2002.1031325
