The second-harmonic generation in chalcogenide glass-ceramic doped with CdS nanocrystals
Résumé
An innovative way is proposed here to synthesize chalcogenide glass-CdS nanocrystal composites by hot-pressing a combination of Ge20Sb12S68 glassy powder and nonlinear CdS nanoparticles. The cadmium sulfide nanoparticles, which possess the second-harmonic generation property, were synthesized from basic cadmium soln. strongly complexed by amine. The obtained nanocomposites present a homogeneous distribution of the crystals. The transmission reaches 30% at 5 μm and up to 60% at 10.6 μm. The second-harmonic generation at 0.9 μm has been detected. This technique can overcome the uncontrollable hetero-crystn. which tends to occur in the glass-ceramics prepd. by the conventional thermal treatment method.
Origine : Fichiers produits par l'(les) auteur(s)
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