GLS and GLSSe ultrafast laser inscribed waveguides for mid-IR supercontinuum generation

Mark D. Mackenzie, James M. Morris, Christian Rosenberg Petersen, Andrea Ravagli, Chris Craig, Daniel W. Hewak, Henry T. Bookey, Ole Bang, Ajoy K. Kar*

*Corresponding author for this work

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Abstract

Using the ultrafast laser inscription technique, buried channel waveguides have been fabricated in gallium lanthanum sulfide and gallium lanthanum sulfide selenide glasses to demonstrate the suitability of the materials for supercontinuum generation in the mid-IR. Supercontinuum generation was performed using 100 femtosecond pump pulses with microJoule pulse energies and a center wavelength of 4.6 µm, which is in the anomalous dispersion regime for these waveguides. Under such pump conditions, supercontinuum was obtained covering a 25-dB-bandwidth of up to 6.1 um with a long-wavelength edge of 8 µm. To our knowledge, this represents the broadest and the longest-wavelength IR supercontinuum generated from an ultrafast laser inscribed waveguide to date.
Original languageEnglish
JournalOptical Materials Express
Volume9
Issue number2
Pages (from-to)643-651
ISSN2159-3930
DOIs
Publication statusPublished - 2019

Cite this

Mackenzie, M. D., Morris, J. M., Petersen, C. R., Ravagli, A., Craig, C., Hewak, D. W., Bookey, H. T., Bang, O., & Kar, A. K. (2019). GLS and GLSSe ultrafast laser inscribed waveguides for mid-IR supercontinuum generation. Optical Materials Express, 9(2), 643-651. https://doi.org/10.1364/OME.9.000643