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Second-harmonic generation in a bent-core nematic liquid crystal.
- Source :
-
Physical review. E, Statistical, nonlinear, and soft matter physics [Phys Rev E Stat Nonlin Soft Matter Phys] 2010 Oct; Vol. 82 (4 Pt 1), pp. 041710. Date of Electronic Publication: 2010 Oct 25. - Publication Year :
- 2010
-
Abstract
- 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.
Details
- Language :
- English
- ISSN :
- 1550-2376
- Volume :
- 82
- Issue :
- 4 Pt 1
- Database :
- MEDLINE
- Journal :
- Physical review. E, Statistical, nonlinear, and soft matter physics
- Publication Type :
- Academic Journal
- Accession number :
- 21230298
- Full Text :
- https://doi.org/10.1103/PhysRevE.82.041710