2ND-HARMONIC-GENERATION STUDIES OF INCLINED THIN-FILMS

Citation
R. Stolle et al., 2ND-HARMONIC-GENERATION STUDIES OF INCLINED THIN-FILMS, Applied physics. B, Lasers and optics, 58(4), 1994, pp. 317-321
Citations number
19
Categorie Soggetti
Physics, Applied",Optics
ISSN journal
09462171
Volume
58
Issue
4
Year of publication
1994
Pages
317 - 321
Database
ISI
SICI code
0946-2171(1994)58:4<317:2SOIT>2.0.ZU;2-Q
Abstract
The nonlinear surface susceptibility chi(S)(2) is generally referred t o the system of Cartesian coordinates of the sample. However, since ac tual measurements take place with respect to the laboratory system of coordinates, appropriate transformation of chi(S)(2) is necessary to d educe the underlying susceptibility-components. We demonstrate this by analyzing the second-harmonic signal generated by an inclined sample upon rotation around the s-axis of the laboratory system of coordinate s. The sample consists of two Langmuir-Blodgett-type monolayers of rot ational symmetry around the sample normal, the two layers being separa ted by a plane-parallel flat of 1 mm thickness. The occurrence of a '' symmetry-forbidden'' I(ss)2omega-signal is discussed in detail.