Table 1. The glass compositions (in mol. %) and the corresponding ratios of ZnSe/CdO.

Sample	SiO2	Na2O	Al2O3	ZnO	ZnSe	CdO	ZnSe/CdO molar ratio
C1	50	20	2	27.8	0.2	0.4	0.5
C2				27.6	0.4	0.4	1
C3				24	4	0.4	10
C4				24	4	0.2	20