Using a mode-locking Nd:YAG laser, we measured the second harmonic generation (SHG) of polymer-stabilized cholesteric texture (PSCT) films. The SHG observed in these samples is due to the dielectric gradient which arises from the interfaces between the cholesteric liquid crystal/polymer and those between the adjacent cholesteric focal conic domains having a different helical axis. Both the SHG intensities and the electro-optical characteristics of PSCT films were measured as a function of the polymer concentration. In addition, polymer network structures formed in PSCT films were investigated. Good correlations among the SHG measurements, electro-optical characteristics, and the polymer network morphologies were found. This means that SHG measurements could provide us with another qualitative, nondestructive method to analyze the PSCT films.
|頁（從 - 到）||2754-2759|
|期刊||Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers|
|出版狀態||Published - 1997 五月|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)