Open AccessAN INVESTIGATION OF LASER INDUCED THERMAL GRATING IN LIQUID CRYSTAL
Author(s) -
Heyuan Zhu,
Xiangcheng Mi,
Z. X. Yu,
Jin Fu-Hui,
Panming Fu
Publication year - 1984
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.33.568
Subject(s) - mbba , grating , materials science , liquid crystal , optics , isotropy , mixing (physics) , degenerate energy levels , thermal , laser , crystal (programming language) , condensed matter physics , physics , optoelectronics , thermodynamics , quantum mechanics , computer science , programming language
Degenerate four-wave mixing effect due to thermally induced index grating is studied in liquid crystal MBBA. By measuring the relaxation time of the thermal grating decay, we obtain the diffusion coefficient of MBBA in its isotropic phase, i.e., D=8.6×10-4cm·S-1 at T = 45.1℃.