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arXiv · 1406.1763

Near-forward Raman study of a phonon-polariton reinforcement regime in the Zn(Se,S) alloy

Rami Hajj Hussein·Olivier Pagès·Franciszek Firszt·Agnieszka Marasek·Wojtek Paszkowicz·Alain Maillard·Laurent Broch
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Abstract

We investigate by near-forward Raman scattering a presumed reinforcement of the (A-C,B-C)-mixed phonon-polariton of a A1-xBxC zincblende alloy when entering its longitudinal optical (LO-)regime near the Brillouin zone centre Γ, as predicted within the formalism of the linear dielectric response. A choice system to address such issue is ZnSe0.68S0.32 due to the moderate dispersion of its refractive index in the visible range, a sine qua non condition to bring the phonon-polariton insight near Γ. The LO-regime is actually accessed by using the 633.0 nm laser excitation, testified by the strong emergence of the (Zn-Se,Zn-S)-mixed phonon-polariton at ultimately small scattering angles.

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Rami Hajj Hussein, Olivier Pagès, Franciszek Firszt, Agnieszka Marasek, Wojtek Paszkowicz, Alain Maillard, Laurent Broch. 2014-06-09. Near-forward Raman study of a phonon-polariton reinforcement regime in the Zn(Se,S) alloy. https://doi.org/10.1063/1.4893322

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