Refractive index and dispersion control of ultrafast laser inscribed waveguides in gallium lanthanum sulphide for near and mid-infrared applications

Giorgos Demetriou, Jean-Philippe Berube, Real Vallee, Younes Messaddeq, Christian R. Petersen, Deepak Jain, Ole Bang, Chris Craig, Daniel W. Hewak, Ajoy Kumar Kar

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Abstract

The powerful ultrafast laser inscription technique is used to fabricate optical waveguides in gallium lanthanum sulphide substrates. For the first time the refractive index profile and the dispersion of such ultrafast laser inscribed waveguides are experimentally measured. In addition the Zero Dispersion Wavelength of both the waveguides and bulk substrate is experimentally determined. The Zero Dispersion Wavelength was determined to be between 3.66 and 3.71 mu m for the waveguides and about 3.61 mu m for the bulk. This work paves the way for realizing ultrafast laser inscribed waveguide devices in gallium lanthanum sulphide glasses for near and mid-IR applications.

Original languageEnglish
Pages (from-to)6350-6358
Number of pages9
JournalOptics Express
Volume24
Issue number6
DOIs
Publication statusPublished - 21 Mar 2016

Keywords

  • CHALCOGENIDE GLASS-FIBER
  • FEMTOSECOND-LASER
  • INSCRIPTION
  • WRITTEN
  • FABRICATION
  • DEPOSITION
  • DEVICE
  • SIGNAL
  • CELLS
  • FILMS

Cite this

Demetriou, G., Berube, J-P., Vallee, R., Messaddeq, Y., Petersen, C. R., Jain, D., Bang, O., Craig, C., Hewak, D. W., & Kar, A. K. (2016). Refractive index and dispersion control of ultrafast laser inscribed waveguides in gallium lanthanum sulphide for near and mid-infrared applications. Optics Express, 24(6), 6350-6358. https://doi.org/10.1364/OE.24.006350