TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

Properties of nematicons in low-birefringence nematic liquid crystals

Tutkimustuotosvertaisarvioitu

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut8-10
Sivumäärä3
JulkaisuPhotonics Letters of Poland
Vuosikerta5
Numero1
DOI - pysyväislinkit
TilaJulkaistu - 2013
OKM-julkaisutyyppiA1 Alkuperäisartikkeli

Tiivistelmä

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.