Temperature influence on dynamics of diffraction grating formation in systems based on photochromic liquid crystalline molecules

• Published in: Chemical physics letters Vol. 510; no. 1-3; pp. 131 - 134
• Main Authors: Czajkowski, M., Mysliwiec, J., Zygadlo, K., Galewski, Z., Bartkiewicz, S.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 24.06.2011
• ISSN: 0009-2614; 1873-4448
• DOI: 10.1016/j.cplett.2011.05.030

[Display omitted] ► Dynamics of photoinduced effects in liquid crystalline azo-containing molecules was studied. ► The influence of temperature on dynamic grating formation has been investigated. ► Simple and prospective materials for a real-time holography applications. The influence of temperature on dynamic grating recording in pure azobenzene derivative liquid crystalline molecules is studied. The liquid crystalline system consisted of photochromic molecules of 4-alkyl-4′-alkoxyazobenzenes with different length of substituents, showing nematic liquid crystalline properties close to the room temperature (from T=32°C). Holographic recording of phase-type gratings was performed in a Degenerate Two Waves Mixing setup, additionally equipped with heating and temperature stabilizing system. For the samples excitation continuous wavelength was used. Explanation of dynamic grating formation is proposed.