Determination of the optical constants of a uniaxial ultrathin film from FT-IR spectroscopy.

Thierry Buffeteau , Bernard Desbat , Eve Péré (1) , Jean Marie Turlet

1 IPREM - Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux

To evaluate the optical anisotropy of ultrathin films (d\textless400 Å), the authors have developed two calcn. procedures which permit the authors to obtain the complex refractive indexes no and nc directly from exptl. FTIR spectra. In the 1st procedure, two transmission spectra recorded at different angles of incidence were used. The 2nd one requires a transmission spectrum at normal incidence and a normalized differential reflection spectrum (PM-IR-RAS) at grazing incidence. These methods were applied to Langmuir-Blodgett Cd arachidate monolayers to illustrate their possibilities.

Mots clés: optical anisotropy; nitrathin films; cadmium arachidate; optical constants

Domaines: Chimie; Chimie théorique et/ou physique

Thierry Buffeteau, Bernard Desbat, Eve Péré, Jean Marie Turlet. Determination of the optical constants of a uniaxial ultrathin film from FT-IR spectroscopy.. 10th International Conference of Progress in Fourier Transform Spectroscopy, Aug 1995, Budapest, Hungary. 14, pp.631-633, 1997, Mikrochimica Acta Supplement, Online ISBN 978-3-7091-6840-0 ; Print ISBN 978-3-211-82931-8 ⟨10.1007/978-3-7091-6840-0_161⟩. ⟨hal-01581880⟩