Journal
JOURNAL OF SOLID STATE CHEMISTRY
Volume 182, Issue 10, Pages 2756-2761Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2009.07.027
Keywords
Chalcogenide glass; Nonlinear refractive index; Raman spectroscopy
Funding
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0807016] Funding Source: National Science Foundation
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in this paper, we report results Of n(2) measurements of new chalcogenide glasses in the Ge-Sb-S-Se system using a modified Z-Scan technique. Measurements were made with picosecond pulses emitted by a 10 Hz Q-switched mode-locked Nd-YAG laser at 1064 nm under conditions suitable to characterize ultrafast nonlinearities. The nonlinear index increases up to 500 times the n2 of fused silica with an increase in the Ge/Se ratio and a decrease with an increase of the Ge/Sb ratio. We confirmed, using Raman spectroscopy, that the nonlinear refractive index depends oil the number of Ge-S(Se) and Sb-S(Se) bonds in the glass network. Sulfide glasses were shown to have a nonlinear FOM near or <1, at 1064 nm. (C) 2009 Elsevier Inc. All rights reserved.
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