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Properties of nematicons in low-birefringence nematic liquid crystals

Research output: Contribution to journalArticleScientificpeer-review


Original languageEnglish
Pages (from-to)8-10
Number of pages3
JournalPhotonics Letters of Poland
Issue number1
Publication statusPublished - 2013
Publication typeA1 Journal article-refereed


We investigate a nonlinear self-focusing and nematicon generation in low birefringence nematic liquid crystals (NLCs), where Δn≈0.04. Nematicons are obtained for larger optical powers but they are more stable than in NLCs with standard birefringence, of the order of Δn≈0.2. Moreover, in low-birefringent NLCs, polarization components exchange energy in a nonlinear regime. Such behaviour is not observed in typical NLCs, where ordinary and extraordinary waves tend to propagate independently due to large walk off. The results of our experimental test are also compared with numerical simulations, using a fully vectorial BPM. Calculations and experimental results are in good qualitative and quantitative agreement.