Second-Harmonic Generation in a Bent-Core Nematic Liquid CrystalPhysical Review E
- centrosymmetric material,
AbstractSecond-Second-harmonic generation (SHG) is studied in the magnetically aligned nematic phase of a bent-core liquid crystal (BCN) and compared to similar measurements made on a conventional rodlike (calamitic) nematic compound. The second-harmonic (SH) light detected from both materials is predominantly due to scattering and therefore incoherent. Results on the calamitic are consistent with a polarization induced by ordinary director fluctuations in the nematic phase. However, the SH scattering collected in the BCN exhibits a different temperature and angular dependence. We discuss how these differences could arise from the effects of short-range correlated, smectic-C-type molecular clusters, which have been detected in recent studies on various BCN materials.
Citation InformationSeung Ho Hong, J. C. Williams, Robert J. Twieg, Antal Jakli, et al.. "Second-Harmonic Generation in a Bent-Core Nematic Liquid Crystal" Physical Review E Vol. 82 Iss. 4 (2010)
Available at: http://works.bepress.com/antal_jakli/10/