Skip to Main content Skip to Navigation
Journal articles

Improvements on the optical properties of Ge-Sb-Se chalcogenide glasses with iodine incorporation

Abstract : Decreasing glass network defects and improving optical transmittance are essential work for material researchers. We studied the function of halogen iodine (I) acting as a glass network modifier in Ge–Sb–Se–based chalcogenide glass system. A systematic series of Ge20Sb5Se75-xIx (x = 0, 5, 10, 15, 20 at%) infrared (IR) chalcohalide glasses were investigated to decrease the weak absorption tail (WAT) and improve the mid-IR transparency. The mechanisms of the halogen I affecting the physical, thermal, and optical properties of Se-based chalcogenide glasses were reported. The structural evolutions of these glasses were also revealed by Raman spectroscopy and camera imaging. The progressive substitution of I for Se increased the optical bandgap. The WAT and scatting loss significantly decreased corresponding to the progressive decrease in structural defects caused by dangling bands and structure defects in the original Ge20Sb5Se75 glass. The achieved maximum IR transparency of Ge–Sb–Se–I glasses can reach up to 80% with an effective transmission window between 0.94 μm to 17 μm, whereas the absorption coefficient decreased to 0.029 cm-1 at 10.16 μm. Thus, these materials are promising candidates for developing low-loss IR fibers.
Document type :
Journal articles
Complete list of metadata

Cited literature [22 references]  Display  Hide  Download
Contributor : Laurent Jonchère <>
Submitted on : Thursday, September 17, 2015 - 3:53:37 PM
Last modification on : Wednesday, April 7, 2021 - 3:18:08 PM
Long-term archiving on: : Tuesday, December 29, 2015 - 8:31:53 AM


Improvements on the optical pr...
Files produced by the author(s)



Chen Jiang, Xunsi Wang, Qingde Zhu, Qiuhua Nie, Minming Zhu, et al.. Improvements on the optical properties of Ge-Sb-Se chalcogenide glasses with iodine incorporation. Infrared Physics and Technology, Elsevier, 2015, 73, pp.54-61. ⟨10.1016/j.infrared.2015.09.001⟩. ⟨hal-01198729⟩



Record views


Files downloads