Add to BibSonomyAbstract
Time-resolved four-wave mixing (FWM) has been widely implemented in the study of the third-order nonlinear optical susceptibility in semiconductors.1 As a third-order process, FWM has been shown to be sensitive to multiphoton excitations, which are difficult to observe with linear optical spectroscopy.2 Two-photon (TP) absorption and more generally, multiphoton absorption have been studied extensively in semiconductors.3 When a semiconductor is excited below its single-photon band gap, in particular, near midgap, TP nonlinearities become important.4 To the best of our knowledge, however, the contribution of the TP third-order nonlinearity has not been previously studied in semiconductors. It has been studied, however, in molecular solutions and polymers.5
© 1995 Optical Society of America
PDF ArticleMore Like This
H. Q. Le, J. P. Donnelly, S. H. Groves, E. A. Swanson, A. Darwish, G. Lenz, and E. P. Ippen
QThJ1 Quantum Electronics and Laser Science Conference (CLEO:FS) 1995
M. Sheik-Bahae, J. Wang, E.J. Canto-Said, R. De Salvo, D.J. Hagan, and E.W. Van Stryland
FH.4 OSA Annual Meeting (FIO) 1993
R. Ludwig, R. Schnabel, H. G. Weber, and J. Wiesenfeld
CThF1 Conference on Lasers and Electro-Optics (CLEO:S&I) 1995