The second-harmonic generation in chalcogenide glass-ceramic doped with CdS nanocrystals

Abstract

An innovative way is proposed here to synthesize chalcogenide glass-ceramic by hotpressing a combination of Ge 20 Sb 12 S 68 glassy powder and non linear CdS nano-particles. The cadmium sulfide nano-particles, which possess second-harmonic generation property, were synthesized from basic cadmium solution strongly complexed by amine. The obtained glassceramics present homogeneous distribution of the crystals. The transmission reaches 30% at 5 µm and up to 60% at 10.6 µm. Second-harmonic generation at 0.9 µm has been detected. This technique can overcome the uncontrollable hetero-crystallization which tends to occur in the glass-ceramics prepared by the conventional thermal treatment method.