Premium
Time Evolution of the Refractive Index of CuCl under Picosecond Pulsed Excitation
Author(s) -
Manar A.,
Gomes M. J. M.,
Hönerlage B.,
Levy R.
Publication year - 1989
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221510236
Subject(s) - picosecond , excitation , refractive index , beam (structure) , optics , polariton , materials science , interference (communication) , intensity (physics) , photon , optoelectronics , physics , laser , channel (broadcasting) , electrical engineering , quantum mechanics , engineering
By measuring the dynamical shift of interference fringes in epitaxial layers of CuCl, using picosecond “pump and test” experiments, the temporal evolution of the nonlinear refractive index of this compound at low temperatures is obtained. This time behaviour analysed at different photon energies of the test beam is shown to depend on the intensity and photon energy of the pump beam. This observed index change is closely related to the dynamics of the polaritons created by the pump beam.