Optical dephasing in saturable-absorbing organic dye IR140.
Room-temperature degenerate four-wave mixing in the forward two-pulse geometry, has been performed on ajet of organic saturable-absorbing laser dye IR140 dissolved in dimethylsulfoxide and ethylene glycol. Numerical solutions to the optical Bloch equation were fitted to the experimental data in order to extract a value of T2 = 50 +/- 5 fs for the homogeneous dephasing time; this value is comparable to those measured for similar organic dyes using other techniques.
Department of Physics and Astronomy, University of Georgia, Athens, Georgia 30602, USA. cliebig@hal.physast.uga.edu
Carl M
CM
Liebig
W M
WM
Dennis