Abstract
Surface second harmonic generation (SSHG) is powerful tool for studying surfaces of centrosymmetric materials where bulk SHG is dipole forbidden [1], The Si-SiO2 interface is of particular interest because of its critical role in integrated circuits, SSHG has been used to study surface steps [2], straining of subsurface bonds [3] and surface roughness [4]. Early experiments using nanosecond pulses were actually limited by the laser induced damage to the surfaces, which has resulted in the use of ps [3] and 100 fs [2,4] pulses to obtain good signal to noise with lower average powers (hundreds of milliwatts for 100 fs pulses).
© 1996 Optical Society of America
PDF ArticleMore Like This
S. T. Cundiff, W. H. Knox, and F. H. Baumann
QTuD3 Quantum Electronics and Laser Science Conference (CLEO:FS) 1996
S.T. Cundiff, W.H Knox, F.H. Baumann, P.K. Roy, and H.M. van Driel
FE.44 International Conference on Ultrafast Phenomena (UP) 1996
J. T. Wright, S. T. Cundiff, K. W. Evans-Lutterodt, and M. L. Green
QThL7 Quantum Electronics and Laser Science Conference (CLEO:FS) 1999