Besides the application for optical materials transmitting in midfarinfrared region, chalcohalide glasses have recently received more and more attention in their uses as nonlinear photonic materials because they share high thirdorder nonlinear polarizability. For this purpose, glass forming region of new Ga2S3GeS2KCl system was studied and a series of this ternary system glasses was obtained. Binary system glasses may be formed by combining GeS2 with Ga2S3, the Ga2S3 content is 0.10. Binary GeS...