TELLURIUM BROMIDE GLASSES: NEW I. R. TRANSMITTING MATERIALS.

Article abstract of DOI:10.1016/0025-5408(88)90225-5

A new class of glasses has been discovered in the binary system Te-Br. The limits of the vitreous domain are Te//2Br and TeBr. The composition Te//3Br//2 is the most stable toward crystallization, and the addition of S or Se strongly decreases the devitrification rate. The glass temperatures are in the range 70-80 degree C and, in the case of Se-doped glasses, there is no crystallization peak. The optical transmission range lies from 1. 9 to 20 mu m for Te//3Br//2 glass and makes it a potential candidate for low-loss fiber at 10. 6 mu m. A loss as low as 10** minus **2 dB/km is estimated at this wavelength from the multiphonon contribution.