Reshaping of infrared picosecond pulses after passage through atmospheric CO(2).
Substantial pulse deformation of picosecond pulses at lambda = 4.3 microm in air is observed, resulting from strong coherent interaction with 10 nearly equidistant rovibrational lines of the asymmetric nu(3) stretching mode of CO(2). The coherent reemissions of the different states interfere constructively after times of Deltat = 19 and 38 psec as expected from the frequency separation of two neighboring states of Deltanu = 1.75 cm(-1) according to the equation Deltat = (c x Deltanu )(-1).
Woerner
M
M
Seilmeier
A
A
Kaiser
W
W