Upconversion luminescence of Er[sup 3+] in chloride glasses based on ZnCl[sub 2] or CdCl[sub 2].

Examines the upconversion luminescence of erbium cations in the chloride glass system based on zinc chloride and cadmium chloride. Luminescence emissions of the structures at 800 nanometer excitation; Comparison of blue emission intensity with other Er[sup 3+]-doped systems; Source of the blue and green upconversion luminescence.