Ia. Maslyanitsyn et al., 2ND-HARMONIC GENERATION IN LANGMUIR-BLODGETT-FILMS OF A NUMBER OF AZOBENZENE DERIVATIVES, Quantum electronics, 27(5), 1997, pp. 437-440
Second-harmonic generation was used in an investigation of the quadrat
ic optical susceptibilities and of the structure of Langmuir-Blodgett
films of a number of azobenzene derivatives, The angular distribution
of second-harmonic radiation could differ significantly for films cont
aining domains with the average size r considerably less than the seco
nd-harmonic wavelength lambda and films consisting of relatively large
domains (r much greater than lambda). The orientation of the molecule
s relative to the substrate was determined in both cases.