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Pulsed laser induced switching of birefringence in nematic phase of photochromic molecules.
Autorzy
Rok wydania
2011
Czasopismo
Numer woluminu
98
Strony
081105 /1-081105 /3
DOI
10.1063/1.3559613
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Fast and dynamic switching of liquid-crystalline photochromic system birefringence induced by pulsed laser has been observed. The system consisted of photochromic molecules of 4-heptyl-4′-methoxyazobenzene showing liquid-crystalline nematic state close to the room temperature. Experiment of dynamic birefringence switching was done in optical Kerr effect (OKE) set-up, where for the sample excitation picosecond pulsed laser was used. Simultaneously, HeNe laser was served as a probe beam source. Measurements were done for different voltages applied to the sample. Rise time constant was in the range of microseconds. Full reversibility of the OKE signal was observed.
Adres publiczny
https://doi.org/10.1063/1.3559613
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