Journal
OPTICAL MATERIALS
Volume 36, Issue 5, Pages 911-915Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optmat.2013.12.025
Keywords
Optical glasses; Chalcogenide glass; Third-order optical nonlinearity; Silver-doped glass
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Funding
- Shanghai Leading Academic Discipline Project [B502]
- Shanghai Key Laboratory Project [08DZ2230500]
- National Natural Science Foundation of China (NSFC) [51072052]
- International Materials Institute for New Functionality in Glass [DMR-0844014]
- Shanghai Committee of Science and Technology [10ZR1410300]
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The third-order optical nonlinearities of silver doped and/or silver-halide (AgX, X = Cl, Br, I) modified Ge-Ga-S sulfide glasses are studied by the femtosecond Z-scan method. A general agreement with empirical rules is reached: the nonlinear refractive index scales with the optical bandgap or Sellmeier gap of the samples. However, the AgI-modified glass having a larger linear refractive index than that of AgCl-modified one, exhibits a smaller nonlinear refractive index, in contrary to Miller's rule. This has been explained based on the analysis of the structure of the samples. (C) 2013 Elsevier B.V. All rights reserved.
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