화학공학소재연구정보센터
Journal of the American Ceramic Society, Vol.102, No.11, 6600-6605, 2019
Ga-Sb-S-I chalcohalide glasses and fibers for mid-infrared applications
In this work, environment friendly Ga-Sb-S-I chalcohalide glasses and fibers are developed for mid-infrared applications. The developed Ga8Sb32S60-xIx (x = 0-10) glasses have a transmission window of ~0.7-14 mu m, linear refractive indices (n(0)) of ~ 2.690-2.751 at 1.55 mu m, nonlinear refractive indices (n(2)) of ~10.5-12.4 x 10(-14 )cm(2)/W at 1.55 mu m, and zero dispersion wavelengths (lambda(0)) of ~4.94-5.25 mu m. The developed Ga8Sb32S55I5/Ga8Sb31S56I5 (core/cladding) fiber can transmit infrared light from below 2 mu m to ~8 mu m, and shows the minimum loss of ~1.2 dB/m at ~6 mu m. The wide transmission window, high optical nonlinearity and superior thermal stability against crystallization of the glasses, and the good 2-8 mu m transmission property of the fiber make these materials promising for mid-infrared applications such as thermal imaging, nonlinear optics, and laser transmission.