Name | |
chalcogenide glass | |
Density [g/cm3] | 4.42-4.63 |
Young's modulus /Gpa | 18.1-22.3 |
Shear modulus /Gpa | 7-8.2 |
Thermal conductivity W/mk | 0.18-0.28 |
Thermal expansion coefficient k(-1) | 11.8-20.7 |
Transition Temperature | 185-368 |
chalcogenide glasses are amorphous materials containing one or more non-oxygen sulfur group elements (S, Se, Te) plus other metallic or non-metallic elements. Compared with traditional oxide glass, chalcogenide glass has high transmittance, high density, weak bond strength, high linear refractive index, high nonlinear refractive index coefficient in the far-infrared wavelength band (8-20um), which is about 100 to 10,000 times higher than that of quartz glass, and negligible two-phonon absorption in the communication wavelength band, which makes it an optimal candidate for fast optical switching and communication signal regeneration.