Title :
Measurement of coherent photon-phonon interaction in solids using the deflection of femtosecond laser pulses
Author :
Schulz, H. ; Kohns, F. ; Scheidt, A. ; Zhou, Peng
Author_Institution :
Dept. of Ind. & Sci. Precision Meas., Optikzentrum NRW, Bochum, Germany
Abstract :
Summary form only given. An amplified pulse of a Ti:sapphire femtosecond laser was split into an intense pump and a weak probe pulse. The delay time 7 between pump and probe pulse was adjusted from 0-50 ps in steps of 10 fs. The interaction volume given by the spatial overlap of pump and probe was in the bulk of the sample. Amorphous samples of glass and different single crystals with a typical thickness of 1 mm were used. Measurements with experimental setup A showed a beam scattering according to the degenerate four wave mixing (DFWM) process with fixed scattering angle, independent of the pump pulse intensity and delay time.
Keywords :
delays; high-speed optical techniques; light scattering; measurement by laser beam; multiwave mixing; optical pumping; solids; 0 to 50 ps; Ti:sapphire femtosecond laser; amorphous samples; amplified pulse; beam scattering; coherent photon-phonon interaction; degenerate four wave mixing; delay time; femtosecond laser pulse deflection; fixed scattering angle; intense pump; interaction volume; pump pulse intensity; solids; weak probe pulse; Delay effects; Electromagnetic scattering; Laser excitation; Optical pulses; Particle scattering; Probes; Pulse amplifiers; Pulse measurements; Pump lasers; Solid lasers;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 1996. QELS '96., Summaries of Papers Presented at the
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
1-55752-444-0
