Abstract
Using sub-100 fs laser pulses it is possible to excite and probe nuclear motions in liquids on a time scale that is short compared to the mean collision time. Optical Kerr effect [1] and transient grating scattering [2] experiments have shown that molecules are inertial. Due to their finite moment of inertia they cannot follow the ultrashort laser pulse and hence the response possesses a finite rise time of typically ±100 fs. The coherently excited librations dephase rapidly within the next 1 to 2 ps. On a longer time scale the material response is completely determined by rotational diffusion showing up as an exponential decay.
© 1996 IEEE
PDF ArticleMore Like This
Thomas Steffen and Koos Duppen
ThA.2 International Conference on Ultrafast Phenomena (UP) 1996
T. Steffen and K. Duppen
QWA3 Quantum Electronics and Laser Science Conference (CLEO:FS) 1996
C.J. Milne, Y.L. Li, T.l.C. Jansen, L. Huang, and R.J.D. Miller
MI17 International Conference on Ultrafast Phenomena (UP) 2006