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Complex dynamics and the stimulated gain spectrum of pentylcyanobiphenyl in the isotropic phase

✍ Scribed by Rebecca S. Miller; Richard A. MacPhail

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
558 KB
Volume
241
Category
Article
ISSN
0009-2614

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✦ Synopsis

We have measured high resolution polarized and depolarized stimulated gain spectra of the liquid crystal pentylcyanobiphenyl (5CB) in its isotropic phase between 36.2 and 122Β°C. Spectral features associated with slow collective reorientation, acoustic waves (Brillouin peaks), and rapid anisotropy fluctuations are all present and can he simultaneously measured with high resolution in a single spectrum. Our results for both the slow and intermediate timescale rcoirientational dynamics are in good agreement with recent transient-grating optical Kerr effect measurements on 5CB.

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