Abstract
For second-harmonic generation (SHG), the phase difference ΔΦ between the fundamental and the harmonic is determined by the phase of the underlying complex-value second-order susceptibility χ(2) Hence, by controlling the phase of χ(2), one should be able to control ΔΦ. This has been demonstrated by using nematic-liquid-crystal (NLC) cells with an externally applied dc field of alternating polarity. Their effective susceptibility consists of an electrically controllable bulk contribution proportional to the applied voltage U and a voltage- independent background . This background contribution is due to the adjacent cell Windows, which were IOT-coated and carried a thin rubbed polyimide layer for molecular alignment. We demonstrated the electrically controllable phase using the second-harmonic-interference technique, originally introduced by Bloembergen and Pershan.1 Two types of NLC cells were studied: pure NLC cells and an NLC cell with an embedded guest of high optical nonlinearity.
© 1995 Optical Society of America
PDF ArticleMore Like This
G. Marowsky, E. Heinemann, M. Pinnow, F.H. Kreuzer, H. Leigeber, and A. Miller
WE25 Nonlinear Optics (NLO) 1992
A. Pinnow, C. Matowsky, F. H. Kreuzer, and H. Leigeber
QTuE8 Quantum Electronics and Laser Science Conference (CLEO:FS) 1993
Jaeyeon Yu, Gerhard Boehm, Mikhail A. Belkin, and Jongwon Lee
FF1B.1 CLEO: Fundamental Science (CLEO:FS) 2023