Title

Determination Of The Two First Non-Trivial Orientational Order Parameters In Lb Films Of Rod-Like Molecules By Third-Order Sum Frequency Mixing

Abstract

We demonstrate a new method for investigating orientational order in Langmuir-Blodgett films built from rod-like poly [bis(m-butoxyphenyl) silane] molecules. Two laser beams with different input frequencies ω1 and ω2 were collinearly overlapped to generate mixed light at the frequency 2ω1+ω2 using all possible permutations of the beam polarizations. From the independent tensor components of χ(3) (- ω3; ω1, ω1, ω2) the first non-trivial in-plane order parameters C2 and C 4 could be deduced with high accuracy. The orientational order could be well described by a two-dimensional diffusion model. © 1993.

Publication Date

1-1-1993

Publication Title

Chemical Physics Letters

Volume

202

Issue

1-2

Number of Pages

44-50

Document Type

Article

Identifier

scopus

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/0009-2614(93)85348-R

Socpus ID

3342899211 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/3342899211

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